Js 自定义日期格式的正则表达式验证

var currentFormat="YYYY-MM-dd HH:ss.SSS";//输入常见日期格式

currentFormat = currentFormat
 //优先替换特殊字符，因为后面替换的正则表达式中包含特殊字符
.replace(/\s/ig, "\\s")
 .replace(/\//ig, "\\/")
.replace(/\\/ig, "\\")
.replace(/\./ig, "\\.")
.replace(/\-/ig, "\\-")
.replace(/yyyy/ig, "[1-9]\\d{3}")//年份
.replace(/yy/ig, "\\d{2}")//年份
.replace(/HH/, "((0[1-9])|(1\\d)|(2[0-4]))")//小时
.replace(/MM/, "((0[1-9])|(1[0-2])|\\d)")//月份
.replace(/dd/,"((0[1-9])|([1-2]\\d)|(3[0-1]))")
.replace(/mm/, "[0-5]\\d|\\d")//分钟
.replace(/ss/, "([0-5]\\d|\\d)")//秒钟
.replace(/SSS/, "\\d{1,3}")//毫秒
currentFormat ="^"+currentFormat+"$";//"^{0}$".format(currentFormat);

new RegExp(currentFormat).test(this.value.trim());//测试输入值