vue 函数节流

data () {
    return {
      // 设置定时器的句柄，用来缓存的
      timer: null
    };
  },

fnThrottle (method, delay, duration) {
        var that = this;
        var timer = this.timer;
        var begin = new Date().getTime();
        return function(){
          var context = that;
          var args = arguments;
          var current = new Date().getTime();
          clearTimeout(timer);
          if(current-begin>=duration){
            method.apply(context,args);
            begin=current;
          }else{
            console.log(delay)
            that.timer=setTimeout(function(){
              method.apply(context,args);
            },delay);
          }
        }
      }

nextMat2:function(){
        this.fnThrottle(this.nextMat, 1000, 1000)();
      },

 nextMat:function() {
    console.log("我是真实执行函数")      
}