weixin_43161796的博客

function student(name) { this.cons = name;} student.prototype.test = '678'; //创建测试方法let a = new student('12412412');console.log('a: ', a); //new 出的结果function CopyNew(testFun, ...arr) { //模拟 new let obj = Object.create(testFun.prototype); //.