小程序防止连续点击

.wxml

<view class="confirmbutton"   catchtap="{{!buttonClicked ? 'savePicToPhone' : ''}}" >保存图片到手机</view>

.js

//保存图片
savePicToPhone: function () {
    let that = this;
    // 防止连续点击
    this.setData({
      buttonClicked: true
    })
    setTimeout(function () {
      that.setData({
        buttonClicked: false
      })
    }, 3000);//3秒间隔
//.......Actions
//.....
//.....
//.....
}