javascript下ie7，ie8的Date Bug的解决 .

本文介绍了一个在IE7及IE8浏览器中解析ISO 8601格式日期字符串为JavaScript Date对象的方法。该方法适用于YYYY-MM-DD格式的日期，并确保了即使在不支持此格式的旧版IE浏览器中也能正确转换。

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转自：http://blog.youkuaiyun.com/fjh658/article/details/8524530

ie9+, chrome firefox opera下 string到Date 使用 Date("2013-01-01"); 都是ok的。

但在ie7， ie8下返回NaN

国外有人写了这样一个解决办法

[javascript] view plain copy print ?

/**Parses string formatted as YYYY-MM-DD to a Date object.
* If the supplied string does not match the format, an
* invalid Date (value NaN) is returned.
* @param {string} dateStringInRange format YYYY-MM-DD, with year in
* range of 0000-9999, inclusive.
* @return {Date} Date object representing the string.
*/
function parseISO8601(dateStringInRange) {
var isoExp = /^\s*(\d{4})-(\d\d)-(\d\d)\s*$/,
date = new Date(NaN), month,
parts = isoExp.exec(dateStringInRange);
if(parts) {
month = +parts[2];
date.setFullYear(parts[1], month - 1, parts[3]);
if(month != date.getMonth() + 1) {
date.setTime(NaN);
}
}
return date;
}

/**Parses string formatted as YYYY-MM-DD to a Date object.
  * If the supplied string does not match the format, an
  * invalid Date (value NaN) is returned.
  * @param {string} dateStringInRange format YYYY-MM-DD, with year in
  * range of 0000-9999, inclusive.
  * @return {Date} Date object representing the string.
  */
 function parseISO8601(dateStringInRange) {
   var isoExp = /^\s*(\d{4})-(\d\d)-(\d\d)\s*$/,
       date = new Date(NaN), month,
       parts = isoExp.exec(dateStringInRange);

   if(parts) {
     month = +parts[2];
     date.setFullYear(parts[1], month - 1, parts[3]);
     if(month != date.getMonth() + 1) {
       date.setTime(NaN);
     }
   }
   return date;
 }

使用如下：

parseISO8601("2013-01-01");