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Useful functions extend js
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//对Date的扩展,将 Date 转化为指定格式的String | |
//月(M)、日(d)、小时(h)、分(m)、秒(s)、季度(q) 可以用 1-2 个占位符, | |
//年(y)可以用 1-4 个占位符,毫秒(S)只能用 1 个占位符(是 1-3 位的数字) | |
//例子: | |
//(new Date()).Format("yyyy-MM-dd hh:mm:ss.S") ==> 2006-07-02 08:09:04.423 | |
//(new Date()).Format("yyyy-M-d h:m:s.S") ==> 2006-7-2 8:9:4.18 | |
Date.prototype.Format = function(fmt) | |
{ //author: meizz | |
var o = { | |
"M+" : this.getMonth()+1, //月份 | |
"d+" : this.getDate(), //日 | |
"h+" : this.getHours(), //小时 | |
"m+" : this.getMinutes(), //分 | |
"s+" : this.getSeconds(), //秒 | |
"q+" : Math.floor((this.getMonth()+3)/3), //季度 | |
"S" : this.getMilliseconds() //毫秒 | |
}; | |
if(/(y+)/.test(fmt)) | |
fmt=fmt.replace(RegExp.$1, (this.getFullYear()+"").substr(4 - RegExp.$1.length)); | |
for(var k in o) | |
if(new RegExp("("+ k +")").test(fmt)) | |
fmt = fmt.replace(RegExp.$1, (RegExp.$1.length==1) ? (o[k]) : (("00"+ o[k]).substr((""+ o[k]).length))); | |
return fmt; | |
} | |
String.prototype.trim= function(){ | |
// 用正则表达式将前后空格 | |
// 用空字符串替代。 | |
return this.replace(/(^\s*)|(\s*$)/g, ""); | |
} |
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