javascript下ie7，ie8的Date Bug的解决

[一篮饭特稀原创，转载请注明出自http://www.cnblogs.com/wanghafan/p/4994200.html] 
 1  function parseISO8601(dateStringInRange) {  
 2    var isoExp = /^\s*(\d{4})-(\d\d)-(\d\d)\s*$/,  
 3        date = new Date(NaN), month,  
 4        parts = isoExp.exec(dateStringInRange);  
 5   
 6    if(parts) {  
 7      month = +parts[2];  
 8      date.setFullYear(parts[1], month - 1, parts[3]);  
 9      if(month != date.getMonth() + 1) {  
10        date.setTime(NaN);  
11      }  
12    }  
13    return date;  
14  }