Question

我正在设计一个JPlayer（HTML5音频/视频播放器）的实例，并遇到了一个奇怪的小故事。我通过它的ID调用一个元素来设置一些属性（宽度，高度，背景）但是没有看到正确的结果。我肯定错过了什么！而不是使用bg图像看到适当的100x100px缩略图，背景图像仅显示在元素内的链接后面..所以它看起来是60x20px（ish）。

我错过了什么？

感谢您的帮助！

P.S.-我正在尝试编辑的元素通过JavaScript

添加到页面中

jsFiddle：http://jsfiddle.net/danielredwood/MmvJX/1/

HTML：

<div id="container">
    <div id="jquery_jplayer_2" class="jp-jplayer"></div>

    <div class="jp-audio">
        <div class="jp-type-playlist">
            <div id="jp_interface_2" class="jp-interface">
                <ul class="jp-controls">
                    <li><a href="#" class="jp-play" tabindex="1">play</a></li>
                    <li><a href="#" class="jp-pause" tabindex="1">pause</a></li>
                    <li><a href="#" class="jp-stop" tabindex="1">stop</a></li>
                    <li><a href="#" class="jp-previous" tabindex="1">previous</a></li>
                    <li><a href="#" class="jp-next" tabindex="1">next</a></li>
                </ul>
                <div class="jp-progress">
                    <div class="jp-seek-bar">
                        <div class="jp-play-bar"></div>
                    </div>
                </div>
                <div class="jp-current-time"></div>
                <div class="jp-duration"></div>
            </div>
            <div id="jp_playlist_2" class="jp-playlist">
                <ul>
                    <!-- The method Playlist.displayPlaylist() uses this unordered list -->
                    <li></li>
                </ul>
            </div>
        </div>
    </div>

CSS：

li {
    list-style-type: none;
    float:left;
}
#jp_playlist_2_item_0 {
    width:100px;
    height:100px;
    background:url(http://a4.mzstatic.com/us/r2000/011/Music/f1/98/7f/mzi.qlkzqpmu.100x100-75.jpg);

}

JavaScript的：

//<![CDATA[
$(document).ready(function(){

    var Playlist = function(instance, playlist, options) {
        var self = this;

        this.instance = instance; // String: To associate specific HTML with this playlist
        this.playlist = playlist; // Array of Objects: The playlist
        this.options = options; // Object: The jPlayer constructor options for this playlist

        this.current = 0;

        this.cssId = {
            jPlayer: "jquery_jplayer_",
            interface: "jp_interface_",
            playlist: "jp_playlist_"
        };
        this.cssSelector = {};

        $.each(this.cssId, function(entity, id) {
            self.cssSelector[entity] = "#" + id + self.instance;
        });

        if(!this.options.cssSelectorAncestor) {
            this.options.cssSelectorAncestor = this.cssSelector.interface;
        }

        $(this.cssSelector.jPlayer).jPlayer(this.options);

        $(this.cssSelector.interface + " .jp-previous").click(function() {
            self.playlistPrev();
            $(this).blur();
            return false;
        });

        $(this.cssSelector.interface + " .jp-next").click(function() {
            self.playlistNext();
            $(this).blur();
            return false;
        });
    };

    Playlist.prototype = {
        displayPlaylist: function() {
            var self = this;
            $(this.cssSelector.playlist + " ul").empty();
            for (i=0; i < this.playlist.length; i++) {
                var listItem = (i === this.playlist.length-1) ? "<li class='jp-playlist-last'>" : "<li>";
                listItem += "<a href='#' id='" + this.cssId.playlist + this.instance + "_item_" + i +"' tabindex='1'>"+ this.playlist[i].name +"</a>";

                // Associate playlist items with their media
                $(this.cssSelector.playlist + " ul").append(listItem);
                $(this.cssSelector.playlist + "_item_" + i).data("index", i).click(function() {
                    var index = $(this).data("index");
                    if(self.current !== index) {
                        self.playlistChange(index);
                    } else {
                        $(self.cssSelector.jPlayer).jPlayer("play");
                    }
                    $(this).blur();
                    return false;
                });

            }
        },
        playlistInit: function(autoplay) {
            if(autoplay) {
                this.playlistChange(this.current);
            } else {
                this.playlistConfig(this.current);
            }
        },
        playlistConfig: function(index) {
            $(this.cssSelector.playlist + "_item_" + this.current).removeClass("jp-playlist-current").parent().removeClass("jp-playlist-current");
            $(this.cssSelector.playlist + "_item_" + index).addClass("jp-playlist-current").parent().addClass("jp-playlist-current");
            this.current = index;
            $(this.cssSelector.jPlayer).jPlayer("setMedia", this.playlist[this.current]);
        },
        playlistChange: function(index) {
            this.playlistConfig(index);
            $(this.cssSelector.jPlayer).jPlayer("play");
        },
        playlistNext: function() {
            var index = (this.current + 1 < this.playlist.length) ? this.current + 1 : 0;
            this.playlistChange(index);
        },
        playlistPrev: function() {
            var index = (this.current - 1 >= 0) ? this.current - 1 : this.playlist.length - 1;
            this.playlistChange(index);
        }
    };

    var audioPlaylist = new Playlist("2", [
        {
            name:"Paparazzi",
            mp3:"http://www.minimalpluscreative.com/newclients/fernandogaribay/audio/fernando_garibay_paparazzisnlmix.mp3",
            oga:"http://www.minimalpluscreative.com/newclients/fernandogaribay/audio/fernando_garibay_paparazzisnlmix.ogg",
            wav:"http://www.minimalpluscreative.com/newclients/fernandogaribay/audio/fernando_garibay_paparazzisnlmix.wav"
        },
        {
            name:"Dance In The Dark",
            mp3:"http://www.minimalpluscreative.com/newclients/fernandogaribay/audio/fernando_garibay_danceinthedark.mp3",
            oga:"http://www.minimalpluscreative.com/newclients/fernandogaribay/audio/fernando_garibay_danceinthedark.ogg",
            wav:"http://www.minimalpluscreative.com/newclients/fernandogaribay/audio/fernando_garibay_danceinthedark.wav"
        },
        {
            name:"Born This Way",
            mp3:"http://www.minimalpluscreative.com/newclients/fernandogaribay/audio/fernando_garibay_bornthisway.mp3",
            oga:"http://www.minimalpluscreative.com/newclients/fernandogaribay/audio/fernando_garibay_bornthisway.ogg",
            wav:"http://www.minimalpluscreative.com/newclients/fernandogaribay/audio/fernando_garibay_bornthisway.wav"
        }

    ], {
        ready: function() {
            audioPlaylist.displayPlaylist();
            audioPlaylist.playlistInit(false); // Parameter is a boolean for autoplay.
        },
        ended: function() {
            audioPlaylist.playlistNext();
        },
        play: function() {
            $(this).jPlayer("pauseOthers");
        },
        swfPath: "../js",
        supplied: "oga, mp3"
    });
});
//]]>

Answer 1

您的CSS无效，因为您没有正确设置元素样式; height和width属性不适用于inline元素，这就是背景无法正常运行的原因。这是一个修复：

#jp_playlist_2_item_0 {
    display: block;

我不确定问题还有什么，所以这是一个有效的演示：http://jsfiddle.net/sE4mZ/

CSS样式由jQuery创建的JPlayer元素

1 个答案: