jquery 限制文本框只能输入数字

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

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jquery 限制文本框只能输入数字     

    

转自:http://jonsion.iteye.com/blog/558277    

    

$("input[name='fangwenyudinhuishu']").keyup(function(){       

        var tmptxt=$(this).val();       

        $(this).val(tmptxt.replace(/\D|^0/g,''));       

    }).bind("paste",function(){       

        var tmptxt=$(this).val();       

        $(this).val(tmptxt.replace(/\D|^0/g,''));       

    }).css("ime-mode", "disabled");      

    

    

    

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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用jquery限制文本框只能输入数字：    

    

程序：    

    

$(function(){    

    

 //文本框只能输入数字，并屏蔽输入法和粘贴    

 $.fn.numeral = function() {       

            $(this).css("ime-mode", "disabled");       

            this.bind("keypress",function(e) {       

            var code = (e.keyCode ? e.keyCode : e.which);  //兼容火狐 IE        

                if(!$.browser.msie&&(e.keyCode==0x8))  //火狐下不能使用退格键       

                {       

                     return ;       

                    }       

                    return code >= 48 && code<= 57;       

            });       

            this.bind("blur", function() {       

                if (this.value.lastIndexOf(".") == (this.value.length - 1)) {       

                    this.value = this.value.substr(0, this.value.length - 1);       

                } else if (isNaN(this.value)) {       

                    this.value = "";       

                }       

            });       

            this.bind("paste", function() {       

                var s = clipboardData.getData('text');       

                if (!/\D/.test(s));       

                value = s.replace(/^0*/, '');       

                return false;       

            });       

            this.bind("dragenter", function() {       

                return false;       

            });       

            this.bind("keyup", function() {       

            if (/(^0+)/.test(this.value)) {       

                this.value = this.value.replace(/^0*/, '');       

                }       

            });       

        };      

        //调用文本框的id    

  $("#score").numeral();     

    

});