js前端代码如何写

1、/*** 格式化日期*/function formatDate(value){ if(value!=null){ var date = new Date(value); if( date.getHours() == 0) return date.format("yyyy-MM-dd"); else

2、return date.format("yyyy-MM-dd hh:mm:ss");}return "";}Date.prototype.format = function(format){var o = {"M+" : this.getMonth()+1, //month"d+" : this.getDate(), //day"h+" : this.getHours(), //hour"m+" : this.getMinutes(), //minute

3、"s+" : this.getSeconds(), //second"q+" : Math.floor((this.getMonth()+3)/3), //quarter"S" : this.getMilliseconds() //millisecond}if(/(y+)/.test(format)) {format = format.replace(RegExp.$1, (this.getFullYear()+"").substr(4 - RegExp.$1.length));}for(var k in o) {if(new RegExp("("+ k +")").test(format)) {format = format.replace(RegExp.$1, RegExp.$1.length==1 ? o[k] : ("00"+ o[k]).substr((""+ o[k]).length));}}return format;}