Angular4实现动态添加删除表单输入框功能

动态添加表单
 
 
 
 
  用户名 
   
  密码 
   
  删除 
 
 
 增加 
 双击 
 {{ login | json }} 
 

username: any; 
 id: number = 1; 
 login:any = [{"username": "username" + this.id,"password": "pwd" + this.id}]; 
 addInput() { 
  console.log('点击'); 
  console.log(this.login); 
  let number = this.login.length + 1; 
  this.login.push({"username": "username" + number, "password": "pwd" + number}); 
  console.log(this.login); 
 } 
 removeInput(item) { 
  console.log(item); 
  let i = this.login.indexOf(item); 
  console.log(i); 
  this.login.splice(i, 1); 
 }