微信小程序 清空输入框

 <view class="weui-cell  weui-cell_input">
      <image class="r-right" src="../../../images/add.png" bindtap='addMeeters'></image>
      <view class="weui-cell__bd">
        <input class="weui-input" bindinput='getNew' value ="{{tUser}}" placeholder="请输入添加人员" />
      </view>
    </view>

　　效果如图所示

要实现输入内容点击 + ，清空输入框

addMeeters:function(){
    this.setData({
      tUser:' '
    })
  },

　　在 + 对应的绑定函数里清空映射的value值即可