Angular4实现动态添加删除表单输入框功能

首先介绍一下实现的效果,就是单一表单能实现添加其他的,也能删除



代码如下:

<h5>动态添加表单</h5>
<div class="form">
<div class="form-group form-group-sm" *ngFor="let i of login">
<label class="col-form-label">用户名</label>
<input class="form-control" [(ngModel)]="i.username" value="{{i.username}}">
<label class="col-form-label">密码</label>
<input class="form-control" [(ngModel)]="i.password" value="{{i.password}}">
<button class="btn btn-link" (click)="removeInput(i)">删除</button>
</div>
<button (click)="addInput()">增加</button>

<button (dblclick)="dbclick()">双击</button>
{{ login | json }}
</div>

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);
}

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