1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
2
3 <html xmlns="http://www.w3.org/1999/xhtml">
4 <head>
5 <title></title>
6 </head>
7 <body>
8 <script type="text/javascript">
9 function JTrim1(s) {
10 return s.replace(/(^\s*)|(\s*$)/g, "");
11 }
12
13 function JTrim2(s) {
14 return s.replace(/\s+/g, "");
15 }
16
17 function validator1() {
18 var var1 = document.getElementById("1");
19 if (JTrim1(var1.value) == "")
20 alert("对不起，你没有输入内容");
21 else
22 alert("你输入了内容");
23 }
24
25 function validator2() {
26 var var1 = document.getElementById("1");
27 if (JTrim2(var1.value) == "")
28 alert("对不起，你没有输入内容");
29 else
30 alert("你输入了内容");
31 }
32 </script>
33 <input type= "text" id= "1" value=""/>
34 <br />
35 <input type="button" name="name" value="vaildator1()" onclick= "validator1();" />
36 <br />
37 <input type="button" name="name" value="vaildator2()" onclick= "validator2();" />
38 <br />
39 </body>
40 </html>
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