jQuery获取自定义属性值的元素并移除

$("#galleryImage").change(function () {
        imgpath = getObjectURL(this.files[0]);
        $("#galleryImage-container").prepend("
x
");
    });
    $("body").on("click", ".removeGalleryImg", function () {
        var num = $(this).attr("data-xindex");
        $("div[data-index=" + num + "]").remove();
    });

function getObjectURL(file) {
        var url = null;
        if (window.createObjectURL != undefined) {
            url = window.createObjectURL(file);
        }
        else if (window.URL != undefined) {
            url = window.URL.createObjectURL(file);
        }
        else if (window.webkitURL != undefined) {
            url = window.webkitURL.createObjectURL(file);
        }
        return url;
    }