/**

* 防止出现这种错误

* navigateTo with an already exist webviewId

* navigateBack with an unexist webviewId

*/

var buttonClicked = function(that){

    that.setData({

        buttonClicked:false

    })

    setTimeout(function(){

        that.setData({

            buttonClicked: true

        })

    },500);

}

Page({

/**

  * 页面的初始数据

  */

    data: {

        buttonClicked: true

    },

    clickBtn:function(){

        if (!this.data.buttonClicked) { return }

         buttonClicked(this);

            //TODO…

    },

}）