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原型链继承 #327
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class Parent {
constructor(name = 'Kevin') {
this.name = name;
}
getName() {
return this.name;
}
}
class Child extends Parent {
constructor(name) {
super(name);
}
}
var child1 = new Child();
console.log(child1.getName()); // 输出 'Kevin' 你这么写才是es6语法把 |
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这一块好像最后还会打印undefined,是因为es6规则发生了改变吗
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