diff --git a/.eslintrc.yml b/.eslintrc.yml
new file mode 100644
index 0000000..ddc22cb
--- /dev/null
+++ b/.eslintrc.yml
@@ -0,0 +1,139 @@
+parserOptions:
+  ecmaVersion: 6
+env:
+  node: true
+extends: 'eslint:recommended'
+rules:
+  indent:
+    - error
+    - 2
+    - SwitchCase: 1
+      VariableDeclarator:
+        var: 2
+        let: 2
+        const: 3
+      MemberExpression: 1
+  linebreak-style:
+    - error
+    - unix
+  quotes:
+    - error
+    - single
+  semi:
+    - error
+    - always
+  eqeqeq:
+    - error
+    - always
+  no-loop-func:
+    - error
+  strict:
+    - error
+    - global
+  block-spacing:
+    - error
+    - always
+  brace-style:
+    - error
+    - 1tbs
+    - allowSingleLine: true
+  camelcase:
+    - error
+  comma-style:
+    - error
+    - last
+  comma-spacing:
+    - error
+    - before: false
+      after: true
+  eol-last:
+    - error
+  func-call-spacing:
+    - error
+    - never
+  key-spacing:
+    - error
+    - beforeColon: false
+      afterColon: true
+      mode: minimum
+  keyword-spacing:
+    - error
+    - before: true
+      after: true
+      overrides:
+        function:
+          after: false
+  max-len:
+    - error
+    - code: 80
+      ignoreUrls: true
+  max-nested-callbacks:
+    - error
+    - max: 5
+  new-cap:
+    - error
+    - newIsCap: true
+      capIsNew: true
+      properties: true
+  new-parens:
+    - error
+  no-lonely-if:
+    - error
+  no-trailing-spaces:
+    - error
+  no-unneeded-ternary:
+    - error
+  no-whitespace-before-property:
+    - error
+  object-curly-spacing:
+    - error
+    - always
+  operator-assignment:
+    - error
+    - always
+  operator-linebreak:
+    - error
+    - after
+  semi-spacing:
+    - error
+    - before: false
+      after: true
+  space-before-blocks:
+    - error
+    - always
+  space-before-function-paren:
+    - error
+    - never
+  space-in-parens:
+    - error
+    - never
+  space-infix-ops:
+    - error
+  space-unary-ops:
+    - error
+    - words: true
+      nonwords: false
+      overrides:
+        typeof: false
+  no-unreachable:
+    - error
+  no-global-assign:
+    - error
+  no-self-compare:
+    - error
+  no-unmodified-loop-condition:
+    - error
+  no-constant-condition:
+    - error
+    - checkLoops: false
+  no-console:
+    - off
+  no-useless-concat:
+    - error
+  no-useless-escape:
+    - error
+  no-shadow-restricted-names:
+    - error
+  no-use-before-define:
+    - error
+    - functions: false
diff --git a/.jshintrc b/.jshintrc
new file mode 100644
index 0000000..85ceb24
--- /dev/null
+++ b/.jshintrc
@@ -0,0 +1,4 @@
+{
+  "esversion": 6,
+  "node": true
+}
\ No newline at end of file
diff --git a/JavaScript/1-DirectedGraph.js b/JavaScript/1-DirectedGraph.js
new file mode 100644
index 0000000..9e383b0
--- /dev/null
+++ b/JavaScript/1-DirectedGraph.js
@@ -0,0 +1,90 @@
+/*
+  Graph in constructor is represented like an array:
+  [[n, m],
+   [a, b],
+   [c, d],
+     ... ]
+  where n - number of vertexes, m - number of edges
+  pairs [a, b], [c, d] - edges (a, b, c, d, ... - numbers of each vertex)
+*/
+
+'use strict';
+
+class DirectedGraph {
+  constructor(graph) {
+    let i;
+    if (!checkGraphForm(graph)) throw new Error('Not a graph!');
+    this.vertexNum = graph[0][0];
+    this.edgesNum = graph[0][1];
+    this.edges = [];
+    for (i = 1; i <= this.edgesNum; i++) {
+      this.edges.push(graph[i]);
+    }
+  }
+  output() {
+    let i;
+    console.dir('Number of vertexes: ' + this.vertexNum);
+    console.dir('Number of edges: ' + this.edgesNum);
+    for (i = 0; i < this.edgesNum; i++) {
+      console.dir('Edge ' + (i + 1) + ': ' + this.edges[i][0] + ' -> ' + this.edges[i][1]);
+    }
+  }
+  incidence() {
+    let i;
+    let j;
+    let matrix = [];
+    for (i = 0; i < this.vertexNum; i++) {
+      matrix.push([]);
+      for (j = 0; j < this.edgesNum; j++) {
+        matrix[i].push(0);
+      }
+    }
+    for (j = 0; j < this.edgesNum; j++) {
+      matrix[this.edges[j][0] - 1][j] = 1;
+      matrix[this.edges[j][1] - 1][j] = -1;
+      if (this.edges[j][0] === this.edges[j][1]) matrix[this.edges[j][0] - 1][j] = 2;
+    }
+    return matrix;
+  }
+  adjacency() {
+    let i;
+    let j;
+    let matrix = [];
+    for (i = 0; i < this.vertexNum; i++) {
+      matrix.push([]);
+      for (j = 0; j < this.vertexNum; j++) {
+        matrix[i].push(0);
+      }
+    }
+    for (j = 0; j < this.edgesNum; j++) {
+      matrix[this.edges[j][0] - 1][this.edges[j][1] - 1] = 1;
+    }
+    return matrix;
+  }
+}
+
+function checkGraphForm(graph) {
+  let i;
+  if (graph instanceof Array && graph.length > 0) {
+    for (i = 0; i < graph.length; i++) {
+      if (graph[i].length !== 2 || !(graph[i] instanceof Array)) return false;
+    }
+  } else {
+    return false;
+  }
+  for (i = 1; i < graph.length; i++) {
+    if (graph[i][0] > graph[0][0] || graph[i][1] > graph[0][0]) return false;
+    if (graph[i][0] < 1 || graph[i][1] < 1) return false;
+    if (graph.length !== graph[0][1] + 1) return false;
+  }
+  return true;
+}
+
+try {
+  const graph = new DirectedGraph([[5, 7], [2, 1], [5, 2], [4, 1], [1, 3], [5, 1], [3, 4], [3, 3]]);
+  graph.output();
+  console.dir(graph.incidence());
+  console.dir(graph.adjacency());
+} catch (E) {
+  console.dir(E.message);
+}
diff --git a/JavaScript/2-DynamicGraph.js b/JavaScript/2-DynamicGraph.js
new file mode 100644
index 0000000..aaa95c3
--- /dev/null
+++ b/JavaScript/2-DynamicGraph.js
@@ -0,0 +1,100 @@
+'use strict';
+
+function DirectedGraph() {
+  this.edges = [];
+  this.vertexes = new Map();
+}
+
+DirectedGraph.prototype.addVertex = function(data) {
+  if (data === undefined) return false;
+  this.vertexes.set(this.vertexes.size + 1, data);
+  return true;
+};
+
+DirectedGraph.prototype.deleteVertex = function(vertexNum) {
+  const data = this.vertexes.get(vertexNum);
+  this.vertexes.delete(vertexNum);
+  return data;
+};
+
+DirectedGraph.prototype.getVertex = function(vertexNum) {
+  const data = this.vertexes.get(vertexNum);
+  return data;
+};
+
+DirectedGraph.prototype.addEdge = function(vertexNum1, vertexNum2) {
+  if (this.vertexes.get(vertexNum1) === undefined) return false;
+  if (this.vertexes.get(vertexNum2) === undefined) return false;
+  this.edges.push([vertexNum1, vertexNum2]);
+  return true;
+};
+
+DirectedGraph.prototype.deleteEdge = function(edgeNum) {
+  if (typeof edgeNum !== 'number') return false;
+  if (edgeNum < 1 || edgeNum > this.edges.length) return false;
+  this.edges.splice(edgeNum - 1, 1);
+  return true;
+};
+
+DirectedGraph.prototype.getEdge = function(edgeNum) {
+  if (typeof edgeNum !== 'number') return undefined;
+  if (edgeNum < 1 || edgeNum > this.edges.length) return undefined;
+  return this.edges[edgeNum - 1];
+};
+
+DirectedGraph.prototype.outputAll = function() {
+  console.dir('Vertexes:');
+  for (var [key, value] of this.vertexes) {
+    console.dir(key + ' : ' + value);
+  }
+  console.dir('Edges:');
+  for (var i = 0; i < this.edges.length; i++) {
+    console.dir(this.edges[i][0] + ' -> ' + this.edges[i][1]);
+  }
+};
+
+DirectedGraph.prototype.incidence = function() {
+  let i;
+  let j;
+  let matrix = [];
+  for (i = 0; i < this.vertexes.size; i++) {
+    matrix.push([]);
+    for (j = 0; j < this.edges.length; j++) {
+      matrix[i].push(0);
+    }
+  }
+  for (j = 0; j < this.edges.length; j++) {
+    matrix[this.edges[j][0] - 1][j] = 1;
+    matrix[this.edges[j][1] - 1][j] = -1;
+    if (this.edges[j][0] === this.edges[j][1]) {
+      matrix[this.edges[j][0] - 1][j] = 2;
+    }
+  }
+  return matrix;
+};
+
+DirectedGraph.prototype.adjacency = function() {
+  let i;
+  let j;
+  let matrix = [];
+  for (i = 0; i < this.vertexes.size; i++) {
+    matrix.push([]);
+    for (j = 0; j < this.vertexes.size; j++) {
+      matrix[i].push(0);
+    }
+  }
+  for (j = 0; j < this.edges.length; j++) {
+    matrix[this.edges[j][0] - 1][this.edges[j][1] - 1] = 1;
+  }
+  return matrix;
+};
+
+
+const graph = new DirectedGraph();
+
+console.dir(graph.addVertex(null));
+console.dir(graph.addVertex('111'));
+console.dir(graph.addEdge(1, 2));
+graph.outputAll();
+console.dir(graph.incidence());
+console.dir(graph.adjacency());