/**
 1. 函数节流（分页加载点击事件使用）
 2. @param fn
 3. @param interval
 4. @returns {Function}
 5. @constructor
 */
 export const Throttle = (fn, t) => {
  let last;
  let timer;
  let interval = t || 500;
  return function() {
      let args = arguments;
      let now = +new Date();
  //等待执行
      if (last && now - last < interval) {
          clearTimeout(timer);
          timer = setTimeout(() => {
              // fn.apply(this, args); //非立即执行，则在wait毫秒内的结束处执行，快速点击N下的时候不需要触发函数
      last = now;
          }, interval);
      } else {
          fn.apply(this, args);//立即执行，则在wait毫秒内开始时执行
    last = now;
      }
  }
}

/**
* 函数防抖 （搜索框搜索使用）
* @param fn
* @param delay
* @returns {Function}
* @constructor
*/
export const Debounce = (fn, t) => {
  let delay = t || 500;
  let timer;
  return function() {
      let args = arguments;
      if (timer) {
          clearTimeout(timer);
      }
      timer = setTimeout(() => {
          timer = null;
          fn.apply(this, args);
      }, delay);
  }
};

export const Debounce2 = (fn, t) => {
let time = t || 500;
let timeout = null;
return function() {
  clearTimeout(timeout)
  timeout = setTimeout(() => {
    fn.apply(this, arguments);
  }, time);
}
};