jquery 限制文本框只能输入数字

http://blog.csdn.net/suntanyong88/article/details/38682703

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1. jquery 限制文本框只能输入数字     
2.     
3. 转自:http://jonsion.iteye.com/blog/558277    
4.     
5. $("input[name='fangwenyudinhuishu']").keyup(function(){       
6.         var tmptxt=$(this).val();       
7.         $(this).val(tmptxt.replace(/\D|^0/g,''));       
8.     }).bind("paste",function(){       
9.         var tmptxt=$(this).val();       
10.         $(this).val(tmptxt.replace(/\D|^0/g,''));       
11.     }).css("ime-mode", "disabled");      
12.     
13.     
14.     
15. 上面是keyup事件处理,下面处理了CTR+V事件,最后就是CSS设置输入法不可用   

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1. 用jquery限制文本框只能输入数字：    
2.     
3. 程序：    
4.     
5. $(function(){    
6.     
7.  //文本框只能输入数字，并屏蔽输入法和粘贴    
8.  $.fn.numeral = function() {       
9.             $(this).css("ime-mode", "disabled");       
10.             this.bind("keypress",function(e) {       
11.             var code = (e.keyCode ? e.keyCode : e.which);  //兼容火狐 IE        
12.                 if(!$.browser.msie&&(e.keyCode==0x8))  //火狐下不能使用退格键       
13.                 {       
14.                      return ;       
15.                     }       
16.                     return code >= 48 && code<= 57;       
17.             });       
18.             this.bind("blur", function() {       
19.                 if (this.value.lastIndexOf(".") == (this.value.length - 1)) {       
20.                     this.value = this.value.substr(0, this.value.length - 1);       
21.                 } else if (isNaN(this.value)) {       
22.                     this.value = "";       
23.                 }       
24.             });       
25.             this.bind("paste", function() {       
26.                 var s = clipboardData.getData('text');       
27.                 if (!/\D/.test(s));       
28.                 value = s.replace(/^0*/, '');       
29.                 return false;       
30.             });       
31.             this.bind("dragenter", function() {       
32.                 return false;       
33.             });       
34.             this.bind("keyup", function() {       
35.             if (/(^0+)/.test(this.value)) {       
36.                 this.value = this.value.replace(/^0*/, '');       
37.                 }       
38.             });       
39.         };      
40.         //调用文本框的id    
41.   $("#score").numeral();     
42.     
43. });