frontend-app/utils/func.js

let timeout = null;
let timer; 
let flag;


export default {
	formatDate (date,val) {
	  let y = date.getFullYear();
	  let m = date.getMonth()+1;
	  let d = date.getDate();
	  let h = date.getHours();
	  let mm = date.getMinutes();
	  let s = date.getSeconds();
	  if(m <= 9){
	  	m = '0' + m;
	  }
	  if(d <= 9){
	  	d = '0' + d;
	  }
	  if(h <= 9){
	  	h = '0' + h;
	  }
	  if(mm <= 9){
	  	mm = '0' + mm;
	  }
	  if(s <= 9){
	  	s = '0' + s;
	  }
		
		let tmpTime = '';
		if(val == 0){
			tmpTime = `${h}:${mm}`;
		}else if(val == 1){
			tmpTime = `${m}-${d}`;
		}else if(val == 2){
			tmpTime = `${y}-${m}-${d} ${h}:${mm}:${s}`;
		}else if(val == 3){
			tmpTime = `${y}-${m}-${d}`;
		}
	    return tmpTime;
	},  
	debounce(func,wait = 1000,immediate = true){
	    // 清除定时器
	    if (timeout !== null) clearTimeout(timeout)
	    // 立即执行，此类情况一般用不到
	    if (immediate) {
	        const callNow = !timeout
	        timeout = setTimeout(() => {
	            timeout = null
	        }, wait)
			
	        if (callNow) typeof func === 'function' && func()
	    } else {
	        // 设置定时器，当最后一次操作后，timeout不会再被清除，所以在延时wait毫秒后执行func回调方法
	        timeout = setTimeout(() => {
	            typeof func === 'function' && func()
	        }, wait)
	    }
	}
	
}