IE清除默认的三角形

/* ie 清理默认的三角 */
select::-ms-expand{
    display:none;
}

jQuery.fn.forceNumeric = function () {
    return this.each(function () {
        $(this).keydown(function (e) {
            var key = e.which || e.keyCode;
            new_key = key;
            // if (!e.shiftKey && !e.altKey && !e.ctrlKey &&
            // // numbers   
            //     key >= 48 && key <= 57 ||
            // // Numeric keypad
            //     key >= 96 && key <= 105 ||
            // // comma, period and minus, . on keypad
            //     key == 190 || key == 188 || key == 109 || key == 110 ||
            // // Backspace and Tab and Enter
            //     key == 8 || key == 9 || key == 13 ||
            // // Home and End
            //     key == 35 || key == 36 ||
            // // left and right arrows
            //     key == 37 || key == 39 ||
            // // Del and Ins
            //     key == 46 || key == 45 || key == 187 || key == 13 || key == 189 || key == 107)
            //     return true;

            return true;
        });
    });
}

来源：CSDN

作者：Edwin_jada

链接：https://blog.csdn.net/Edwin_jade/article/details/103608629