diff --git a/dist/vue-router.common.js b/dist/vue-router.common.js
index 03a6f3575..952b54959 100644
--- a/dist/vue-router.common.js
+++ b/dist/vue-router.common.js
@@ -111,7 +111,7 @@ var encodeReserveRE = /[!'()*]/g;
 var encodeReserveReplacer = function (c) { return '%' + c.charCodeAt(0).toString(16); };
 var commaRE = /%2C/g;
 
-// fixed encodeURIComponent which is more comformant to RFC3986:
+// fixed encodeURIComponent which is more conformant to RFC3986:
 // - escapes [!'()*]
 // - preserve commas
 var encode = function (str) { return encodeURIComponent(str)
@@ -399,8 +399,8 @@ function guardEvent (e) {
   // don't redirect on right click
   if (e.button !== undefined && e.button !== 0) { return }
   // don't redirect if `target="_blank"`
-  if (e.target && e.target.getAttribute) {
-    var target = e.target.getAttribute('target');
+  if (e.currentTarget && e.currentTarget.getAttribute) {
+    var target = e.currentTarget.getAttribute('target');
     if (/\b_blank\b/i.test(target)) { return }
   }
   // this may be a Weex event which doesn't have this method
@@ -470,11 +470,12 @@ function resolvePath (
   base,
   append
 ) {
-  if (relative.charAt(0) === '/') {
+  var firstChar = relative.charAt(0);
+  if (firstChar === '/') {
     return relative
   }
 
-  if (relative.charAt(0) === '?' || relative.charAt(0) === '#') {
+  if (firstChar === '?' || firstChar === '#') {
     return base + relative
   }
 
@@ -491,11 +492,9 @@ function resolvePath (
   var segments = relative.replace(/^\//, '').split('/');
   for (var i = 0; i < segments.length; i++) {
     var segment = segments[i];
-    if (segment === '.') {
-      continue
-    } else if (segment === '..') {
+    if (segment === '..') {
       stack.pop();
-    } else {
+    } else if (segment !== '.') {
       stack.push(segment);
     }
   }
@@ -540,13 +539,14 @@ function cleanPath (path) {
 function createRouteMap (
   routes,
   oldPathMap,
-  oldNameMap
+  oldNameMap,
+  overwriteNames
 ) {
   var pathMap = oldPathMap || Object.create(null);
   var nameMap = oldNameMap || Object.create(null);
 
   routes.forEach(function (route) {
-    addRouteRecord(pathMap, nameMap, route);
+    addRouteRecord(pathMap, nameMap, route, undefined, undefined, overwriteNames);
   });
 
   return {
@@ -560,7 +560,8 @@ function addRouteRecord (
   nameMap,
   route,
   parent,
-  matchAs
+  matchAs,
+  overwriteNames
 ) {
   var path = route.path;
   var name = route.name;
@@ -610,7 +611,7 @@ function addRouteRecord (
       var childMatchAs = matchAs
         ? cleanPath((matchAs + "/" + (child.path)))
         : undefined;
-      addRouteRecord(pathMap, nameMap, child, record, childMatchAs);
+      addRouteRecord(pathMap, nameMap, child, record, childMatchAs, overwriteNames);
     });
   }
 
@@ -621,14 +622,14 @@ function addRouteRecord (
           path: alias,
           children: route.children
         };
-        addRouteRecord(pathMap, nameMap, aliasRoute, parent, record.path);
+        addRouteRecord(pathMap, nameMap, aliasRoute, parent, record.path, overwriteNames);
       });
     } else {
       var aliasRoute = {
         path: route.alias,
         children: route.children
       };
-      addRouteRecord(pathMap, nameMap, aliasRoute, parent, record.path);
+      addRouteRecord(pathMap, nameMap, aliasRoute, parent, record.path, overwriteNames);
     }
   }
 
@@ -637,7 +638,7 @@ function addRouteRecord (
   }
 
   if (name) {
-    if (!nameMap[name]) {
+    if (!nameMap[name] || overwriteNames) {
       nameMap[name] = record;
     } else if (process.env.NODE_ENV !== 'production' && !matchAs) {
       warn(
@@ -1195,8 +1196,11 @@ function createMatcher (routes) {
   var pathMap = ref.pathMap;
   var nameMap = ref.nameMap;
 
-  function addRoutes (routes) {
-    createRouteMap(routes, pathMap, nameMap);
+  function addRoutes (
+    routes,
+    overwriteNames
+  ) {
+    createRouteMap(routes, pathMap, nameMap, overwriteNames);
   }
 
   function match (
@@ -2259,8 +2263,8 @@ VueRouter.prototype.resolve = function resolve (
   }
 };
 
-VueRouter.prototype.addRoutes = function addRoutes (routes) {
-  this.matcher.addRoutes(routes);
+VueRouter.prototype.addRoutes = function addRoutes (routes, overwriteNames) {
+  this.matcher.addRoutes(routes, overwriteNames);
   if (this.history.current !== START) {
     this.history.transitionTo(this.history.getCurrentLocation());
   }
diff --git a/dist/vue-router.esm.js b/dist/vue-router.esm.js
index ed7b78aa6..572b9dc5e 100644
--- a/dist/vue-router.esm.js
+++ b/dist/vue-router.esm.js
@@ -109,7 +109,7 @@ var encodeReserveRE = /[!'()*]/g;
 var encodeReserveReplacer = function (c) { return '%' + c.charCodeAt(0).toString(16); };
 var commaRE = /%2C/g;
 
-// fixed encodeURIComponent which is more comformant to RFC3986:
+// fixed encodeURIComponent which is more conformant to RFC3986:
 // - escapes [!'()*]
 // - preserve commas
 var encode = function (str) { return encodeURIComponent(str)
@@ -397,8 +397,8 @@ function guardEvent (e) {
   // don't redirect on right click
   if (e.button !== undefined && e.button !== 0) { return }
   // don't redirect if `target="_blank"`
-  if (e.target && e.target.getAttribute) {
-    var target = e.target.getAttribute('target');
+  if (e.currentTarget && e.currentTarget.getAttribute) {
+    var target = e.currentTarget.getAttribute('target');
     if (/\b_blank\b/i.test(target)) { return }
   }
   // this may be a Weex event which doesn't have this method
@@ -468,11 +468,12 @@ function resolvePath (
   base,
   append
 ) {
-  if (relative.charAt(0) === '/') {
+  var firstChar = relative.charAt(0);
+  if (firstChar === '/') {
     return relative
   }
 
-  if (relative.charAt(0) === '?' || relative.charAt(0) === '#') {
+  if (firstChar === '?' || firstChar === '#') {
     return base + relative
   }
 
@@ -489,11 +490,9 @@ function resolvePath (
   var segments = relative.replace(/^\//, '').split('/');
   for (var i = 0; i < segments.length; i++) {
     var segment = segments[i];
-    if (segment === '.') {
-      continue
-    } else if (segment === '..') {
+    if (segment === '..') {
       stack.pop();
-    } else {
+    } else if (segment !== '.') {
       stack.push(segment);
     }
   }
@@ -538,13 +537,14 @@ function cleanPath (path) {
 function createRouteMap (
   routes,
   oldPathMap,
-  oldNameMap
+  oldNameMap,
+  overwriteNames
 ) {
   var pathMap = oldPathMap || Object.create(null);
   var nameMap = oldNameMap || Object.create(null);
 
   routes.forEach(function (route) {
-    addRouteRecord(pathMap, nameMap, route);
+    addRouteRecord(pathMap, nameMap, route, undefined, undefined, overwriteNames);
   });
 
   return {
@@ -558,7 +558,8 @@ function addRouteRecord (
   nameMap,
   route,
   parent,
-  matchAs
+  matchAs,
+  overwriteNames
 ) {
   var path = route.path;
   var name = route.name;
@@ -608,7 +609,7 @@ function addRouteRecord (
       var childMatchAs = matchAs
         ? cleanPath((matchAs + "/" + (child.path)))
         : undefined;
-      addRouteRecord(pathMap, nameMap, child, record, childMatchAs);
+      addRouteRecord(pathMap, nameMap, child, record, childMatchAs, overwriteNames);
     });
   }
 
@@ -619,14 +620,14 @@ function addRouteRecord (
           path: alias,
           children: route.children
         };
-        addRouteRecord(pathMap, nameMap, aliasRoute, parent, record.path);
+        addRouteRecord(pathMap, nameMap, aliasRoute, parent, record.path, overwriteNames);
       });
     } else {
       var aliasRoute = {
         path: route.alias,
         children: route.children
       };
-      addRouteRecord(pathMap, nameMap, aliasRoute, parent, record.path);
+      addRouteRecord(pathMap, nameMap, aliasRoute, parent, record.path, overwriteNames);
     }
   }
 
@@ -635,7 +636,7 @@ function addRouteRecord (
   }
 
   if (name) {
-    if (!nameMap[name]) {
+    if (!nameMap[name] || overwriteNames) {
       nameMap[name] = record;
     } else if (process.env.NODE_ENV !== 'production' && !matchAs) {
       warn(
@@ -1193,8 +1194,11 @@ function createMatcher (routes) {
   var pathMap = ref.pathMap;
   var nameMap = ref.nameMap;
 
-  function addRoutes (routes) {
-    createRouteMap(routes, pathMap, nameMap);
+  function addRoutes (
+    routes,
+    overwriteNames
+  ) {
+    createRouteMap(routes, pathMap, nameMap, overwriteNames);
   }
 
   function match (
@@ -2257,8 +2261,8 @@ VueRouter.prototype.resolve = function resolve (
   }
 };
 
-VueRouter.prototype.addRoutes = function addRoutes (routes) {
-  this.matcher.addRoutes(routes);
+VueRouter.prototype.addRoutes = function addRoutes (routes, overwriteNames) {
+  this.matcher.addRoutes(routes, overwriteNames);
   if (this.history.current !== START) {
     this.history.transitionTo(this.history.getCurrentLocation());
   }
diff --git a/dist/vue-router.js b/dist/vue-router.js
index e65acba2b..5026b5d1f 100644
--- a/dist/vue-router.js
+++ b/dist/vue-router.js
@@ -115,7 +115,7 @@ var encodeReserveRE = /[!'()*]/g;
 var encodeReserveReplacer = function (c) { return '%' + c.charCodeAt(0).toString(16); };
 var commaRE = /%2C/g;
 
-// fixed encodeURIComponent which is more comformant to RFC3986:
+// fixed encodeURIComponent which is more conformant to RFC3986:
 // - escapes [!'()*]
 // - preserve commas
 var encode = function (str) { return encodeURIComponent(str)
@@ -403,8 +403,8 @@ function guardEvent (e) {
   // don't redirect on right click
   if (e.button !== undefined && e.button !== 0) { return }
   // don't redirect if `target="_blank"`
-  if (e.target && e.target.getAttribute) {
-    var target = e.target.getAttribute('target');
+  if (e.currentTarget && e.currentTarget.getAttribute) {
+    var target = e.currentTarget.getAttribute('target');
     if (/\b_blank\b/i.test(target)) { return }
   }
   // this may be a Weex event which doesn't have this method
@@ -474,11 +474,12 @@ function resolvePath (
   base,
   append
 ) {
-  if (relative.charAt(0) === '/') {
+  var firstChar = relative.charAt(0);
+  if (firstChar === '/') {
     return relative
   }
 
-  if (relative.charAt(0) === '?' || relative.charAt(0) === '#') {
+  if (firstChar === '?' || firstChar === '#') {
     return base + relative
   }
 
@@ -495,11 +496,9 @@ function resolvePath (
   var segments = relative.replace(/^\//, '').split('/');
   for (var i = 0; i < segments.length; i++) {
     var segment = segments[i];
-    if (segment === '.') {
-      continue
-    } else if (segment === '..') {
+    if (segment === '..') {
       stack.pop();
-    } else {
+    } else if (segment !== '.') {
       stack.push(segment);
     }
   }
@@ -544,13 +543,14 @@ function cleanPath (path) {
 function createRouteMap (
   routes,
   oldPathMap,
-  oldNameMap
+  oldNameMap,
+  overwriteNames
 ) {
   var pathMap = oldPathMap || Object.create(null);
   var nameMap = oldNameMap || Object.create(null);
 
   routes.forEach(function (route) {
-    addRouteRecord(pathMap, nameMap, route);
+    addRouteRecord(pathMap, nameMap, route, undefined, undefined, overwriteNames);
   });
 
   return {
@@ -564,7 +564,8 @@ function addRouteRecord (
   nameMap,
   route,
   parent,
-  matchAs
+  matchAs,
+  overwriteNames
 ) {
   var path = route.path;
   var name = route.name;
@@ -614,7 +615,7 @@ function addRouteRecord (
       var childMatchAs = matchAs
         ? cleanPath((matchAs + "/" + (child.path)))
         : undefined;
-      addRouteRecord(pathMap, nameMap, child, record, childMatchAs);
+      addRouteRecord(pathMap, nameMap, child, record, childMatchAs, overwriteNames);
     });
   }
 
@@ -625,14 +626,14 @@ function addRouteRecord (
           path: alias,
           children: route.children
         };
-        addRouteRecord(pathMap, nameMap, aliasRoute, parent, record.path);
+        addRouteRecord(pathMap, nameMap, aliasRoute, parent, record.path, overwriteNames);
       });
     } else {
       var aliasRoute = {
         path: route.alias,
         children: route.children
       };
-      addRouteRecord(pathMap, nameMap, aliasRoute, parent, record.path);
+      addRouteRecord(pathMap, nameMap, aliasRoute, parent, record.path, overwriteNames);
     }
   }
 
@@ -641,7 +642,7 @@ function addRouteRecord (
   }
 
   if (name) {
-    if (!nameMap[name]) {
+    if (!nameMap[name] || overwriteNames) {
       nameMap[name] = record;
     } else if ("development" !== 'production' && !matchAs) {
       warn(
@@ -1199,8 +1200,11 @@ function createMatcher (routes) {
   var pathMap = ref.pathMap;
   var nameMap = ref.nameMap;
 
-  function addRoutes (routes) {
-    createRouteMap(routes, pathMap, nameMap);
+  function addRoutes (
+    routes,
+    overwriteNames
+  ) {
+    createRouteMap(routes, pathMap, nameMap, overwriteNames);
   }
 
   function match (
@@ -2263,8 +2267,8 @@ VueRouter.prototype.resolve = function resolve (
   }
 };
 
-VueRouter.prototype.addRoutes = function addRoutes (routes) {
-  this.matcher.addRoutes(routes);
+VueRouter.prototype.addRoutes = function addRoutes (routes, overwriteNames) {
+  this.matcher.addRoutes(routes, overwriteNames);
   if (this.history.current !== START) {
     this.history.transitionTo(this.history.getCurrentLocation());
   }
diff --git a/dist/vue-router.min.js b/dist/vue-router.min.js
index 9d5a9d396..e738c87e7 100644
--- a/dist/vue-router.min.js
+++ b/dist/vue-router.min.js
@@ -3,4 +3,4 @@
   * (c) 2017 Evan You
   * @license MIT
   */
-!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):t.VueRouter=e()}(this,function(){"use strict";function t(t,e){t||"undefined"!=typeof console&&console.warn("[vue-router] "+e)}function e(e,n){switch(typeof n){case"undefined":return;case"object":return n;case"function":return n(e);case"boolean":return n?e.params:void 0;default:t(!1,'props in "'+e.path+'" is a '+typeof n+", expecting an object, function or boolean.")}}function n(t,e){if(void 0===e&&(e={}),t){var n;try{n=r(t)}catch(t){n={}}for(var o in e)n[o]=e[o];return n}return e}function r(t){var e={};return(t=t.trim().replace(/^(\?|#|&)/,""))?(t.split("&").forEach(function(t){var n=t.replace(/\+/g," ").split("="),r=_t(n.shift()),o=n.length>0?_t(n.join("=")):null;void 0===e[r]?e[r]=o:Array.isArray(e[r])?e[r].push(o):e[r]=[e[r],o]}),e):e}function o(t){var e=t?Object.keys(t).map(function(e){var n=t[e];if(void 0===n)return"";if(null===n)return Ct(e);if(Array.isArray(n)){var r=[];return n.slice().forEach(function(t){void 0!==t&&(null===t?r.push(Ct(e)):r.push(Ct(e)+"="+Ct(t)))}),r.join("&")}return Ct(e)+"="+Ct(n)}).filter(function(t){return t.length>0}).join("&"):null;return e?"?"+e:""}function i(t,e,n){var r={name:e.name||t&&t.name,meta:t&&t.meta||{},path:e.path||"/",hash:e.hash||"",query:e.query||{},params:e.params||{},fullPath:u(e),matched:t?a(t):[]};return n&&(r.redirectedFrom=u(n)),Object.freeze(r)}function a(t){for(var e=[];t;)e.unshift(t),t=t.parent;return e}function u(t){var e=t.path,n=t.query;void 0===n&&(n={});var r=t.hash;return void 0===r&&(r=""),(e||"/")+o(n)+r}function c(t,e){return e===$t?t===e:!!e&&(t.path&&e.path?t.path.replace(Tt,"")===e.path.replace(Tt,"")&&t.hash===e.hash&&s(t.query,e.query):!(!t.name||!e.name)&&(t.name===e.name&&t.hash===e.hash&&s(t.query,e.query)&&s(t.params,e.params)))}function s(t,e){void 0===t&&(t={}),void 0===e&&(e={});var n=Object.keys(t),r=Object.keys(e);return n.length===r.length&&n.every(function(n){return String(t[n])===String(e[n])})}function p(t,e){return 0===t.path.replace(Tt,"/").indexOf(e.path.replace(Tt,"/"))&&(!e.hash||t.hash===e.hash)&&f(t.query,e.query)}function f(t,e){for(var n in e)if(!(n in t))return!1;return!0}function h(t){if(!(t.metaKey||t.ctrlKey||t.shiftKey||t.defaultPrevented||void 0!==t.button&&0!==t.button)){if(t.target&&t.target.getAttribute){var e=t.target.getAttribute("target");if(/\b_blank\b/i.test(e))return}return t.preventDefault&&t.preventDefault(),!0}}function l(t){if(t)for(var e,n=0;n<t.length;n++){if(e=t[n],"a"===e.tag)return e;if(e.children&&(e=l(e.children)))return e}}function d(t){if(!d.installed){d.installed=!0,Ot=t,Object.defineProperty(t.prototype,"$router",{get:function(){return this.$root._router}}),Object.defineProperty(t.prototype,"$route",{get:function(){return this.$root._route}}),t.mixin({beforeCreate:function(){this.$options.router&&(this._router=this.$options.router,this._router.init(this),t.util.defineReactive(this,"_route",this._router.history.current))}}),t.component("router-view",Rt),t.component("router-link",Lt);var e=t.config.optionMergeStrategies;e.beforeRouteEnter=e.beforeRouteLeave=e.created}}function y(t,e,n){if("/"===t.charAt(0))return t;if("?"===t.charAt(0)||"#"===t.charAt(0))return e+t;var r=e.split("/");n&&r[r.length-1]||r.pop();for(var o=t.replace(/^\//,"").split("/"),i=0;i<o.length;i++){var a=o[i];"."!==a&&(".."===a?r.pop():r.push(a))}return""!==r[0]&&r.unshift(""),r.join("/")}function v(t){var e="",n="",r=t.indexOf("#");r>=0&&(e=t.slice(r),t=t.slice(0,r));var o=t.indexOf("?");return o>=0&&(n=t.slice(o+1),t=t.slice(0,o)),{path:t,query:n,hash:e}}function m(t){return t.replace(/\/\//g,"/")}function g(t,e,n){var r=e||Object.create(null),o=n||Object.create(null);return t.forEach(function(t){w(r,o,t)}),{pathMap:r,nameMap:o}}function w(t,e,n,r,o){var i=n.path,a=n.name,u={path:b(i,r),components:n.components||{default:n.component},instances:{},name:a,parent:r,matchAs:o,redirect:n.redirect,beforeEnter:n.beforeEnter,meta:n.meta||{},props:null==n.props?{}:n.components?n.props:{default:n.props}};if(n.children&&n.children.forEach(function(n){var r=o?m(o+"/"+n.path):void 0;w(t,e,n,u,r)}),void 0!==n.alias)if(Array.isArray(n.alias))n.alias.forEach(function(o){var i={path:o,children:n.children};w(t,e,i,r,u.path)});else{var c={path:n.alias,children:n.children};w(t,e,c,r,u.path)}t[u.path]||(t[u.path]=u),a&&(e[a]||(e[a]=u))}function b(t,e){return t=t.replace(/\/$/,""),"/"===t[0]?t:null==e?t:m(e.path+"/"+t)}function x(t,e){for(var n,r=[],o=0,i=0,a="",u=e&&e.delimiter||"/";null!=(n=Ft.exec(t));){var c=n[0],s=n[1],p=n.index;if(a+=t.slice(i,p),i=p+c.length,s)a+=s[1];else{var f=t[i],h=n[2],l=n[3],d=n[4],y=n[5],v=n[6],m=n[7];a&&(r.push(a),a="");var 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r=this,o=this.router.match(t,this.current);this.confirmTransition(o,function(){r.updateRoute(o),e&&e(o),r.ensureURL(),r.ready||(r.ready=!0,r.readyCbs.forEach(function(t){t(o)}))},n)},Wt.prototype.confirmTransition=function(t,e,n){var r=this,o=this.current,i=function(){n&&n()};if(c(t,o)&&t.matched.length===o.matched.length)return this.ensureURL(),i();var a=rt(this.current.matched,t.matched),u=a.updated,s=a.deactivated,p=a.activated,f=[].concat(at(s),this.router.beforeHooks,ut(u),p.map(function(t){return t.beforeEnter}),ht(p));this.pending=t;var h=function(e,n){return r.pending!==t?i():void e(t,o,function(t){t===!1?(r.ensureURL(!0),i()):"string"==typeof t||"object"==typeof t?("object"==typeof t&&t.replace?r.replace(t):r.push(t),i()):n(t)})};et(f,h,function(){var n=[],o=function(){return r.current===t},a=st(p,n,o);et(a,h,function(){return r.pending!==t?i():(r.pending=null,e(t),void(r.router.app&&r.router.app.$nextTick(function(){n.forEach(function(t){return t()})})))})})},Wt.prototype.updateRoute=function(t){var e=this.current;this.current=t,this.cb&&this.cb(t),this.router.afterHooks.forEach(function(n){n&&n(t,e)})};var Gt=function(t){function e(e,n){var r=this;t.call(this,e,n);var o=e.options.scrollBehavior;o&&I(),window.addEventListener("popstate",function(t){r.transitionTo(vt(r.base),function(t){o&&F(e,t,r.current,!0)})})}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.prototype.go=function(t){window.history.go(t)},e.prototype.push=function(t,e,n){var r=this,o=this,i=o.current;this.transitionTo(t,function(t){Z(m(r.base+t.fullPath)),F(r.router,t,i,!1),e&&e(t)},n)},e.prototype.replace=function(t,e,n){var r=this,o=this,i=o.current;this.transitionTo(t,function(t){tt(m(r.base+t.fullPath)),F(r.router,t,i,!1),e&&e(t)},n)},e.prototype.ensureURL=function(t){if(vt(this.base)!==this.current.fullPath){var e=m(this.base+this.current.fullPath);t?Z(e):tt(e)}},e.prototype.getCurrentLocation=function(){return vt(this.base)},e}(Wt),Qt=function(t){function e(e,n,r){t.call(this,e,n),r&&mt(this.base)||gt()}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.prototype.setupListeners=function(){var t=this;window.addEventListener("hashchange",function(){gt()&&t.transitionTo(wt(),function(t){xt(t.fullPath)})})},e.prototype.push=function(t,e,n){this.transitionTo(t,function(t){bt(t.fullPath),e&&e(t)},n)},e.prototype.replace=function(t,e,n){this.transitionTo(t,function(t){xt(t.fullPath),e&&e(t)},n)},e.prototype.go=function(t){window.history.go(t)},e.prototype.ensureURL=function(t){var e=this.current.fullPath;wt()!==e&&(t?bt(e):xt(e))},e.prototype.getCurrentLocation=function(){return wt()},e}(Wt),Zt=function(t){function e(e,n){t.call(this,e,n),this.stack=[],this.index=-1}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.prototype.push=function(t,e,n){var r=this;this.transitionTo(t,function(t){r.stack=r.stack.slice(0,r.index+1).concat(t),r.index++,e&&e(t)},n)},e.prototype.replace=function(t,e,n){var r=this;this.transitionTo(t,function(t){r.stack=r.stack.slice(0,r.index).concat(t),e&&e(t)},n)},e.prototype.go=function(t){var e=this,n=this.index+t;if(!(n<0||n>=this.stack.length)){var r=this.stack[n];this.confirmTransition(r,function(){e.index=n,e.updateRoute(r)})}},e.prototype.getCurrentLocation=function(){var t=this.stack[this.stack.length-1];return t?t.fullPath:"/"},e.prototype.ensureURL=function(){},e}(Wt),te=function(t){void 0===t&&(t={}),this.app=null,this.apps=[],this.options=t,this.beforeHooks=[],this.afterHooks=[],this.matcher=V(t.routes||[]);var e=t.mode||"hash";switch(this.fallback="history"===e&&!Nt,this.fallback&&(e="hash"),Pt||(e="abstract"),this.mode=e,e){case"history":this.history=new Gt(this,t.base);break;case"hash":this.history=new Qt(this,t.base,this.fallback);break;case"abstract":this.history=new Zt(this,t.base)}},ee={currentRoute:{}};return te.prototype.match=function(t,e,n){return this.matcher.match(t,e,n)},ee.currentRoute.get=function(){return this.history&&this.history.current},te.prototype.init=function(t){var e=this;if(this.apps.push(t),!this.app){this.app=t;var n=this.history;if(n instanceof Gt)n.transitionTo(n.getCurrentLocation());else if(n instanceof Qt){var r=function(){n.setupListeners()};n.transitionTo(n.getCurrentLocation(),r,r)}n.listen(function(t){e.apps.forEach(function(e){e._route=t})})}},te.prototype.beforeEach=function(t){this.beforeHooks.push(t)},te.prototype.afterEach=function(t){this.afterHooks.push(t)},te.prototype.onReady=function(t){this.history.onReady(t)},te.prototype.push=function(t,e,n){this.history.push(t,e,n)},te.prototype.replace=function(t,e,n){this.history.replace(t,e,n)},te.prototype.go=function(t){this.history.go(t)},te.prototype.back=function(){this.go(-1)},te.prototype.forward=function(){this.go(1)},te.prototype.getMatchedComponents=function(t){var e=t?this.resolve(t).route:this.currentRoute;return e?[].concat.apply([],e.matched.map(function(t){return Object.keys(t.components).map(function(e){return t.components[e]})})):[]},te.prototype.resolve=function(t,e,n){var r=z(t,e||this.history.current,n),o=this.match(r,e),i=o.redirectedFrom||o.fullPath,a=this.history.base,u=kt(a,i,this.mode);return{location:r,route:o,href:u,normalizedTo:r,resolved:o}},te.prototype.addRoutes=function(t,e){this.matcher.addRoutes(t,e),this.history.current!==$t&&this.history.transitionTo(this.history.getCurrentLocation())},Object.defineProperties(te.prototype,ee),te.install=d,te.version="2.3.1",Pt&&window.Vue&&window.Vue.use(te),te});
\ No newline at end of file
diff --git a/src/create-matcher.js b/src/create-matcher.js
index 7fe0436f5..79a8d950d 100644
--- a/src/create-matcher.js
+++ b/src/create-matcher.js
@@ -9,14 +9,17 @@ import { getRouteRegex, fillParams } from './util/params'
 
 export type Matcher = {
   match: (raw: RawLocation, current?: Route, redirectedFrom?: Location) => Route;
-  addRoutes: (routes: Array<RouteConfig>) => void;
+  addRoutes: (routes: Array<RouteConfig>, overwriteNames?: boolean) => void;
 };
 
 export function createMatcher (routes: Array<RouteConfig>): Matcher {
   const { pathMap, nameMap } = createRouteMap(routes)
 
-  function addRoutes (routes) {
-    createRouteMap(routes, pathMap, nameMap)
+  function addRoutes (
+    routes,
+    overwriteNames?: boolean
+  ) {
+    createRouteMap(routes, pathMap, nameMap, overwriteNames)
   }
 
   function match (
diff --git a/src/create-route-map.js b/src/create-route-map.js
index d3c1fa747..945bfab17 100644
--- a/src/create-route-map.js
+++ b/src/create-route-map.js
@@ -6,7 +6,8 @@ import { cleanPath } from './util/path'
 export function createRouteMap (
   routes: Array<RouteConfig>,
   oldPathMap?: Dictionary<RouteRecord>,
-  oldNameMap?: Dictionary<RouteRecord>
+  oldNameMap?: Dictionary<RouteRecord>,
+  overwriteNames?: boolean
 ): {
   pathMap: Dictionary<RouteRecord>;
   nameMap: Dictionary<RouteRecord>;
@@ -15,7 +16,7 @@ export function createRouteMap (
   const nameMap: Dictionary<RouteRecord> = oldNameMap || Object.create(null)
 
   routes.forEach(route => {
-    addRouteRecord(pathMap, nameMap, route)
+    addRouteRecord(pathMap, nameMap, route, undefined, undefined, overwriteNames)
   })
 
   return {
@@ -29,7 +30,8 @@ function addRouteRecord (
   nameMap: Dictionary<RouteRecord>,
   route: RouteConfig,
   parent?: RouteRecord,
-  matchAs?: string
+  matchAs?: string,
+  overwriteNames?: boolean
 ) {
   const { path, name } = route
   if (process.env.NODE_ENV !== 'production') {
@@ -78,7 +80,7 @@ function addRouteRecord (
       const childMatchAs = matchAs
         ? cleanPath(`${matchAs}/${child.path}`)
         : undefined
-      addRouteRecord(pathMap, nameMap, child, record, childMatchAs)
+      addRouteRecord(pathMap, nameMap, child, record, childMatchAs, overwriteNames)
     })
   }
 
@@ -89,14 +91,14 @@ function addRouteRecord (
           path: alias,
           children: route.children
         }
-        addRouteRecord(pathMap, nameMap, aliasRoute, parent, record.path)
+        addRouteRecord(pathMap, nameMap, aliasRoute, parent, record.path, overwriteNames)
       })
     } else {
       const aliasRoute = {
         path: route.alias,
         children: route.children
       }
-      addRouteRecord(pathMap, nameMap, aliasRoute, parent, record.path)
+      addRouteRecord(pathMap, nameMap, aliasRoute, parent, record.path, overwriteNames)
     }
   }
 
@@ -105,7 +107,7 @@ function addRouteRecord (
   }
 
   if (name) {
-    if (!nameMap[name]) {
+    if (!nameMap[name] || overwriteNames) {
       nameMap[name] = record
     } else if (process.env.NODE_ENV !== 'production' && !matchAs) {
       warn(
diff --git a/src/index.js b/src/index.js
index 0d0d26252..71fa39135 100644
--- a/src/index.js
+++ b/src/index.js
@@ -189,8 +189,8 @@ export default class VueRouter {
     }
   }
 
-  addRoutes (routes: Array<RouteConfig>) {
-    this.matcher.addRoutes(routes)
+  addRoutes (routes: Array<RouteConfig>, overwriteNames?: boolean) {
+    this.matcher.addRoutes(routes, overwriteNames)
     if (this.history.current !== START) {
       this.history.transitionTo(this.history.getCurrentLocation())
     }
diff --git a/test/unit/specs/api.spec.js b/test/unit/specs/api.spec.js
index 57e912cd9..c4f3ee721 100644
--- a/test/unit/specs/api.spec.js
+++ b/test/unit/specs/api.spec.js
@@ -49,7 +49,7 @@ describe('router.addRoutes', () => {
     const router = new Router({
       mode: 'abstract',
       routes: [
-        { path: '/a', component: { name: 'A' }}
+        { path: '/a', component: { name: 'A' }, name: 'routeA' }
       ]
     })
 
@@ -63,7 +63,7 @@ describe('router.addRoutes', () => {
     expect(components.length).toBe(0)
 
     router.addRoutes([
-      { path: '/b', component: { name: 'B' }}
+      { path: '/b', component: { name: 'B' }, name: 'routeB' }
     ])
     components = router.getMatchedComponents()
     expect(components.length).toBe(1)
@@ -74,6 +74,54 @@ describe('router.addRoutes', () => {
     components = router.getMatchedComponents()
     expect(components.length).toBe(1)
     expect(components[0].name).toBe('A')
+
+    // adding same name route with overwriteNames parameter set to true
+    router.addRoutes([
+      { path: '/c', component: { name: 'C' }, name: 'routeA' }
+    ], true)
+    router.push({ name: 'routeA' })
+    components = router.getMatchedComponents()
+    expect(components.length).toBe(1)
+    expect(components[0].name).toBe('C')
+    expect(router.currentRoute.path).toBe('/c')
+    expect(router.currentRoute.name).toBe('routeA')
+
+    // overwriting a route name with a nested route name
+    router.addRoutes([
+      {
+        path: '/d',
+        name: 'routeD',
+        component: { name: 'D' },
+        children: [
+          {
+            path: 'e',
+            component: { name: 'E' },
+            name: 'routeB'
+          }
+        ]
+      }
+    ], true)
+    router.push({ name: 'routeB' })
+    components = router.getMatchedComponents()
+    expect(components.length).toBe(2)
+    expect(components[0].name).toBe('D')
+    expect(components[1].name).toBe('E')
+    expect(router.currentRoute.path).toBe('/d/e')
+    expect(router.currentRoute.name).toBe('routeB')
+
+    // make sure it preserves previous routes
+    router.push('/a')
+    components = router.getMatchedComponents()
+    expect(components.length).toBe(1)
+    expect(components[0].name).toBe('A')
+    expect(router.currentRoute.path).toBe('/a')
+    expect(router.currentRoute.name).toBe('routeA')
+    router.push('/b')
+    components = router.getMatchedComponents()
+    expect(components.length).toBe(1)
+    expect(components[0].name).toBe('B')
+    expect(router.currentRoute.path).toBe('/b')
+    expect(router.currentRoute.name).toBe('routeB')
   })
 })
 
diff --git a/types/router.d.ts b/types/router.d.ts
index 60ad25e2c..d3e11f777 100644
--- a/types/router.d.ts
+++ b/types/router.d.ts
@@ -29,7 +29,7 @@ declare class VueRouter {
   forward (): void;
   getMatchedComponents (to?: RawLocation): Component[];
   onReady (cb: Function): void;
-  addRoutes (routes: RouteConfig[]): void;
+  addRoutes (routes: RouteConfig[], overwriteNames?: boolean): void;
   resolve (to: RawLocation, current?: Route, append?: boolean): {
     location: Location;
     route: Route;
diff --git a/yarn.lock b/yarn.lock
index 48c40134f..c4b4839a4 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -893,8 +893,8 @@ caniuse-api@^1.5.2:
     lodash.uniq "^4.3.0"
 
 caniuse-db@^1.0.30000346, caniuse-db@^1.0.30000624:
-  version "1.0.30000626"
-  resolved "https://registry.yarnpkg.com/caniuse-db/-/caniuse-db-1.0.30000626.tgz#44363dc86857efaf758fea9faef6a15ed93d8f33"
+  version "1.0.30000628"
+  resolved "https://registry.yarnpkg.com/caniuse-db/-/caniuse-db-1.0.30000628.tgz#3d010e2a8e2537a8d135792e90e4f2ce0eb838cc"
 
 caseless@~0.11.0:
   version "0.11.0"
@@ -1196,8 +1196,8 @@ create-hmac@^1.1.0, create-hmac@^1.1.2:
     inherits "^2.0.1"
 
 cross-spawn@^5.0.1:
-  version "5.0.1"
-  resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-5.0.1.tgz#a3bbb302db2297cbea3c04edf36941f4613aa399"
+  version "5.1.0"
+  resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-5.1.0.tgz#e8bd0efee58fcff6f8f94510a0a554bbfa235449"
   dependencies:
     lru-cache "^4.0.1"
     shebang-command "^1.2.0"
@@ -1524,8 +1524,8 @@ ejs@~0.8.3:
   resolved "https://registry.yarnpkg.com/ejs/-/ejs-0.8.8.tgz#ffdc56dcc35d02926dd50ad13439bbc54061d598"
 
 electron-to-chromium@^1.2.3:
-  version "1.2.3"
-  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.2.3.tgz#4b4d04d237c301f72e2d15c2137b2b79f9f5ab76"
+  version "1.2.4"
+  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.2.4.tgz#9751cbea89fa120bf88c226ba41eb8d0b6f1b597"
 
 elliptic@^6.0.0:
   version "6.4.0"
@@ -1994,15 +1994,15 @@ flow-remove-types-no-whitespace@^1.0.3:
     babylon "^6.8.4"
     magic-string "^0.16.0"
 
-for-in@^0.1.5:
-  version "0.1.6"
-  resolved "https://registry.yarnpkg.com/for-in/-/for-in-0.1.6.tgz#c9f96e89bfad18a545af5ec3ed352a1d9e5b4dc8"
+for-in@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/for-in/-/for-in-1.0.1.tgz#d6c3e3798ceaaa301047b109dedf1b1ae37a0efa"
 
 for-own@^0.1.4:
-  version "0.1.4"
-  resolved "https://registry.yarnpkg.com/for-own/-/for-own-0.1.4.tgz#0149b41a39088c7515f51ebe1c1386d45f935072"
+  version "0.1.5"
+  resolved "https://registry.yarnpkg.com/for-own/-/for-own-0.1.5.tgz#5265c681a4f294dabbf17c9509b6763aa84510ce"
   dependencies:
-    for-in "^0.1.5"
+    for-in "^1.0.1"
 
 foreach@^2.0.5:
   version "2.0.5"
@@ -2493,8 +2493,8 @@ is-glob@^2.0.0, is-glob@^2.0.1:
     is-extglob "^1.0.0"
 
 is-my-json-valid@^2.10.0, is-my-json-valid@^2.12.4:
-  version "2.15.0"
-  resolved "https://registry.yarnpkg.com/is-my-json-valid/-/is-my-json-valid-2.15.0.tgz#936edda3ca3c211fd98f3b2d3e08da43f7b2915b"
+  version "2.16.0"
+  resolved "https://registry.yarnpkg.com/is-my-json-valid/-/is-my-json-valid-2.16.0.tgz#f079dd9bfdae65ee2038aae8acbc86ab109e3693"
   dependencies:
     generate-function "^2.0.0"
     generate-object-property "^1.1.0"
@@ -3472,8 +3472,8 @@ postcss-discard-comments@^2.0.4:
     postcss "^5.0.14"
 
 postcss-discard-duplicates@^2.0.1:
-  version "2.0.2"
-  resolved "https://registry.yarnpkg.com/postcss-discard-duplicates/-/postcss-discard-duplicates-2.0.2.tgz#02be520e91571ffb10738766a981d5770989bb32"
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/postcss-discard-duplicates/-/postcss-discard-duplicates-2.1.0.tgz#b9abf27b88ac188158a5eb12abcae20263b91932"
   dependencies:
     postcss "^5.0.4"
 
@@ -4088,8 +4088,8 @@ resolve@1.1.7:
   resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.1.7.tgz#203114d82ad2c5ed9e8e0411b3932875e889e97b"
 
 resolve@^1.1.6, resolve@^1.1.7:
-  version "1.3.1"
-  resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.3.1.tgz#5d0a1632609b6b00a22284293db1d5d973676314"
+  version "1.3.2"
+  resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.3.2.tgz#1f0442c9e0cbb8136e87b9305f932f46c7f28235"
   dependencies:
     path-parse "^1.0.5"
 
@@ -4717,12 +4717,12 @@ vm-browserify@0.0.4:
     indexof "0.0.1"
 
 vue-hot-reload-api@^2.0.1:
-  version "2.0.10"
-  resolved "https://registry.yarnpkg.com/vue-hot-reload-api/-/vue-hot-reload-api-2.0.10.tgz#28a12ef10511e70c90f260b0cbc4066b050e8af8"
+  version "2.0.11"
+  resolved "https://registry.yarnpkg.com/vue-hot-reload-api/-/vue-hot-reload-api-2.0.11.tgz#bf26374fb73366ce03f799e65ef5dfd0e28a1568"
 
 vue-loader@^11.0.0:
-  version "11.1.2"
-  resolved "https://registry.yarnpkg.com/vue-loader/-/vue-loader-11.1.2.tgz#ad2d349a7037cce9895e2358747c78290200e881"
+  version "11.1.3"
+  resolved "https://registry.yarnpkg.com/vue-loader/-/vue-loader-11.1.3.tgz#8ed9299fba57cdd21595df4ebc74f55518d2574e"
   dependencies:
     consolidate "^0.14.0"
     hash-sum "^1.0.2"
@@ -4738,26 +4738,26 @@ vue-loader@^11.0.0:
     vue-template-es2015-compiler "^1.2.2"
 
 vue-style-loader@^2.0.0:
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/vue-style-loader/-/vue-style-loader-2.0.1.tgz#3ec086e900f9a44086b639749dd40bc84673c3cd"
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/vue-style-loader/-/vue-style-loader-2.0.3.tgz#b464ffb6279702d4137a80ac81b5c12ac440f0a0"
   dependencies:
     hash-sum "^1.0.2"
     loader-utils "^1.0.2"
 
 vue-template-compiler@^2.1.0:
-  version "2.1.10"
-  resolved "https://registry.yarnpkg.com/vue-template-compiler/-/vue-template-compiler-2.1.10.tgz#cb89643adc395e97435585522e43d0a9b1913257"
+  version "2.2.1"
+  resolved "https://registry.yarnpkg.com/vue-template-compiler/-/vue-template-compiler-2.2.1.tgz#ca5e43db50dc6e761e3c1296313de33091783511"
   dependencies:
     de-indent "^1.0.2"
     he "^1.1.0"
 
 vue-template-es2015-compiler@^1.2.2:
-  version "1.5.0"
-  resolved "https://registry.yarnpkg.com/vue-template-es2015-compiler/-/vue-template-es2015-compiler-1.5.0.tgz#e4f672ab1718a3abf9171a080daefac31be117e1"
+  version "1.5.1"
+  resolved "https://registry.yarnpkg.com/vue-template-es2015-compiler/-/vue-template-es2015-compiler-1.5.1.tgz#0c36cc57aa3a9ec13e846342cb14a72fcac8bd93"
 
 vue@^2.1.0:
-  version "2.1.10"
-  resolved "https://registry.yarnpkg.com/vue/-/vue-2.1.10.tgz#c9235ca48c7925137be5807832ac4e3ac180427b"
+  version "2.2.1"
+  resolved "https://registry.yarnpkg.com/vue/-/vue-2.2.1.tgz#ddbfd2f0caf38f374f5a36eea2e1edf25225b68e"
 
 watchpack@^1.2.0:
   version "1.3.1"