微信小程序之实现循环动态添加和删除输入框

1.页面代码：

 <block wx:for="{
  
  {lists}}" wx:key="{
  
  {index}}">
        <van-field class="phone_div" type="number" value="" name="phone" label="电话" placeholder="请输入你的电话" bindchange="bindPhoneDataChang{
  
  {index}}" />
      </block>
      <van-button class='="send_code_div"' type="info" disabled="{
  
  {disabled}}" bind:click="onAddPhone">
        <text class='code_text'>+</text>
      </van-button>
      <van-button class='="send_code_div"' type="info" disabled="{
  
  {disabled}}" bind:click="delList">
        <text class='code_text'>-</text>
      </van-button>

2.js代码:

 data: {
    lists: [{
      value:''
    }]
  },
  onAddPhone: function () {
    var lists = this.data.lists;
    var newData = { value: ''};
    if (lists.length >= 3) {
      Dialog.alert({
        message: '最多再增加2个输入框'
      });
      return