jquery 限制文本框只能输入数字

$("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

$(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();

});