js工具函数

1.等待所有图片加载

var imgObjs = [],
　　 count = 0;
rotate.prizeTotal = prizes.length;//图片总数
var timer = setInterval(function() {

    if (count == rotate.prizeTotal ) {
        clearInterval(timer);                    
    	//加载后执行的回调函数
    }
}, 50);
for(var i = 0;i < prizes.length; i++){
	var img = new Image();
	img.src = prizes[i].prize_icon;	//prizes数组的prize_icon存放图片的地址
	imgObjs.push(img);	
	img.onload = function(){
		count++;		
	}

}

2.js获取服务器时间

var timstamp = new Date().valueOf();
var systemTime = new Date($.ajax({url:"?t="+timstamp,async: false}).getResponseHeader("Date"));
return systemTime.valueOf();

3.获取当前时间yyyymmdd格式

//获取当前时间yyyymmdd格式
var CurrentDate = "";
var day = new Date();
var Year = day.getFullYear();
var Month = day.getMonth()+1;
var Day = day.getDate();
CurrentDate += Year;
if (Month >= 10 ){
 	CurrentDate += Month;
}
else{
 	CurrentDate += "0" + Month;
}
if (Day >= 10 ){
 	CurrentDate += Day ;
}
else{
 	CurrentDate += "0" + Day ;
}

另外Date.parse(new Date())可转化为13位数字形式。　　

　　

　

转载于:https://www.cnblogs.com/lixuemin/p/5135493.html