select默认选中项颜色为灰色，选择后变为黑色（js实现）

Posted 2020-09-27 Mr.Y

<script>
    var unSelected = "#999";
    var selected = "#333";
    $(function () {
        $("select").css("color", unSelected);
        $("option").css("color", selected);
        $("select").change(function () {
            var selItem = $(this).val();
            if (selItem == $(this).find(‘option:first‘).val()) {
                $(this).css("color", unSelected);
            } else {
                $(this).css("color", selected);
            }
        });
    })

</script>