用JS实现字符串转日期并比较大小的方法

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 1 方法1： function compareDate(DateOne,DateTwo) {
 2 
 3 var OneMonth = DateOne.substring(5,DateOne.lastIndexOf ("-")); var OneDay = DateOne.substring(DateOne.length,DateOne.lastIndexOf ("-")+1); var OneYear = DateOne.substring(0,DateOne.indexOf ("-"));
 4 
 5 var TwoMonth = DateTwo.substring(5,DateTwo.lastIndexOf ("-")); var TwoDay = DateTwo.substring(DateTwo.length,DateTwo.lastIndexOf ("-")+1); var TwoYear = DateTwo.substring(0,DateTwo.indexOf ("-"));
 6 
 7 if (Date.parse(OneMonth+"/"+OneDay+"/"+OneYear) > Date.parse(TwoMonth+"/"+TwoDay+"/"+TwoYear)) { return true; } else { return false; }
 8 
 9 }
10 
11  
12 
13 举例： alert(compareDate(''2004-12-01'',''2004-05-02''')); 目前只支持年－月－日这样的格式
14 
15  
16 
17 方法2：
18 
19 var checkStartDate = document.form1.checkStartDate.value; 
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21 var checkEndDate = document.form1.checkEndDate.value; 
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23 var arys= new Array();  
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25 var startdate=new Date(arys[0],parseInt(arys[1]-1),arys[2]);  
26 
27 if(checkStartDate != null && checkEndDate != null) {  
28 
29     arys=checkStartDate.split('-');  
30 
31     var startdate=new Date(arys[0],parseInt(arys[1]-1),arys[2]); 
32 
33     arys=checkEndDate.split('-');  
34 
35     var checkEndDate=new Date(arys[0],parseInt(arys[1]-1),arys[2]);   
36 
37     if(startdate > checkEndDate) {  
38 
39         alert("你的检查日期开始时间大于结束时间啦");  
40 
41         return; 
42 
43     }
44 
45 }
本文转载于：http://blog.163.com/wzi_xiang/blog/static/659829612009111731536436/