Jquery选择器,选择ID以"某某"字符开头的一组文本框只能输入数字

   <script type="text/javascript">
        $.fn.numeral = function () {   //注册一个全局函数numeral
            $(this).css("ime-mode", "disabled");
            this.bind("keypress", function () {
                if (event.keyCode == 46) {
                    if (this.value.indexOf(".") != -1) {
                        return false;
                    }
                } else {
                    return event.keyCode >= 46 && event.keyCode <= 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*/, '');
                }
            });
        };
    </script>
    <script type="text/javascript" language="javascript">
        $(function () {
            OnlyInPutNumber();
        });

        function OnlyInPutNumber() {
            $("input[id^='dgItem_txt']").numeral(); //找到id以dgItem_txt开头的一组文本框
        }
    </script>