jquery 验证所有text,textare非法字符

01 var $j = jQuery.noConflict();
02 //使用此方法验证所有text textarea 是否含有非法字符
03 $j(document).ready(function(){
04    $j("input[type='text']").each(function(i){
05         $j(this).keyup(function() { checkIllegalChar($j(this)); });
06     });
07     $j("textarea").each(function(i){
08         $j(this).keyup(function() { checkIllegalChar($j(this)); });
09     });
10 });
11
12
13
14 function checkIllegalChar(obj){
15     var value = obj.val();
16     if(!checkChar(value)){
17          obj.val(value.substring(0,value.length-1));
18          obj.focus();
19        
20     }
21 }
22
23   //检查输入中的非法字符
24 function checkChar(InString) {
25     var RefString = "<";
26     var RefString2 = "%";
27     var RefString3 = "\"";
28     var RefString4 = ">";
29     var RefString5 = "~";
30     var RefString6 = "&";
31     var RefString7 = "?";
32     var RefString8 = "'";
33     for (Count = 0; Count < InString.length; Count++) {
34         TempChar = InString.substring(Count, Count + 1);
35         if ((RefString.indexOf(TempChar, 0) == 0) || (RefString2.indexOf(TempChar, 0) == 0) || (RefString3.indexOf(TempChar, 0) == 0) || (RefString4.indexOf(TempChar, 0) == 0) || (RefString5.indexOf(TempChar, 0) == 0) || (RefString6.indexOf(TempChar, 0) == 0) || (RefString7.indexOf(TempChar, 0) == 0) || (RefString8.indexOf(TempChar, 0) == 0)) {
36             alert("您的输入中含有非法字符\"<\",\"\"\",\"%\",\"> \",\"~\",\"&\",\"?\",\"'\",请重新输入!");
37             return (false);
38         }
39     }
40     return (true);
41 }