重新指向了constructor,p2怎么访问不到copy函数? function Person(name) { this.name = name; } Person.prototype.copy = function() { return new this.constructor(this.name); } var p1 = new Person('李四'); //console.log(Person.prototype); Person.prototype = { show: function() { console.log('show'); } } Person.prototype.constructor=Person; //console.log(Person.prototype); var p2 = new Person('张三');
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