text: // export function debounce(func,delay){
    
  //     let time = null
  //     return function(...args){
  //       if(timer)cleartimeout(timer)
  //       timer = setTimeout(()=>{
  //         func.apply(this.args)
  //       },delay)
  //     }
  //   }
  // 防抖函数,解决重复频繁调用问题
  export function debounce(fn, delay=100) {
    let timer = null;
    return function (...args) {
      if (timer) {
        clearTimeout(timer);
      }
      timer = setTimeout(() => {
        fn.apply(this, args);
      }, delay);
    };
  }
  
  function padLeftZero(str) {
    return ("00" + str).substr(str.length);
  }
  
  // 时间格式化
  export function formatDate(date, fmt) {
    if (/(y+)/.test(fmt)) {
      fmt = fmt.replace(RegExp.$1, (date.getFullYear() + "").substr(4 - RegExp.$1.length));
    }
  
    let o = {
      "M+": date.getMonth() + 1,
      "d+": date.getDate(),
      "h+": date.getHours(),
      "m+": date.getMinutes(),
      "s+": date.getSeconds()
    };
  
    for (let k in o) {
      if (new RegExp(`(${k})`).test(fmt)) {
        let str = o[k] + "";
        fmt = fmt.replace(RegExp.$1, RegExp.$1.length === 1 ? str : padLeftZero(str));
      }
    }
  
    return fmt;
  }