feat: 完成手写Object.freeze函数

Author: coderwei99

面试常见的手写题/17-Object.freeze.js

@@ -0,0 +1,35 @@
+const syn = Symbol(1)
+const obj = {
+  name: 'coderwei',
+  age: 13,
+  friend: {
+    name: 'test1',
+  },
+  [syn]: 123,
+}
+
+Object.prototype.dadad = '123'
+
+Object._freeze = function (obj) {
+  const ObjKey = Object.getOwnPropertyNames(obj)
+  const SymbolKey = Object.getOwnPropertySymbols(obj)
+  const keys = [...ObjKey, ...SymbolKey]
+
+  for (const key of keys) {
+    Object.defineProperty(obj, key, {
+      writable: false,
+      configurable: false,
+    })
+  }
+}
+
+Object._freeze(obj)
+
+function hasOwnProtoType(obj, key) {
+  return Object.prototype.hasOwnProperty.call(obj, key)
+}
+obj[syn] = '被修改了'
+obj.name = '被修改了'
+obj.age = '被修改了'
+obj.friend.name = '被修改了'
+console.log(obj)