我有这个大代码：
function _buildPlaylist() {
//console.log('_buildPlaylist');
_lastThumbOrientation=null;//important, make thumb holder every time on new playlist
_playlistOpened=false;//reset for bottom this._autoOpenPlaylist selection
var len = _videoProcessData.length, i = 0, thumb, div, _item, active_icon;
//console.log('len = ', len);
if(getDeeplinkData){
dlink = baseURL + strict + firstLevel + '/';
var str_to_filter, tempArr = categoryArr[activeCategory].mediaName;
}
for (i; i < len; i++) {
//console.log(_item.description);
_item = _videoProcessData[i];
//deeplinks
if(useDeeplink && getDeeplinkData){
str_to_filter = filterAllowedChars(_item.deeplink);
//console.log(str_to_filter);
tempArr.push(str_to_filter);
}
playlistLength+=1;
if(outputDeeplinkData){
if(_item.type == 'local'){//aspect ratio always present
if(mp4Support){
loc_path = _item.mp4Path;
}else if(vorbisSupport){
loc_path = _item.ogvPath;
}else if(webmSupport){
if(_item.webmPath)loc_path = _item.webmPath;
}
if(loc_path.lastIndexOf('/')){
loc_name = loc_path.substr(loc_path.lastIndexOf('/')+1);
}else{
loc_name = loc_path;
}
deeplinkData.push({'id': playlistLength, 'name': loc_name, 'type':_item.type ,'video-id': loc_path, 'deeplink': dlink+_item.deeplink});
}else{
deeplinkData.push({'id': playlistLength, 'name': _item.title?_item.title:'', 'type':_item.type ,'video-id': _item.id, 'deeplink': dlink+_item.deeplink});
}
}
div = $('<div/>').addClass('thumbs').attr({'data-id': playlistLength-1, 'data-type': _item.type});
if(thumbHolder)div.appendTo(thumbInnerContainer).bind('click', clickPlaylistItem);
if(_item.type == 'local'){//aspect ratio always present
div.attr({'mp4Path': _item.mp4Path, 'ogvPath': _item.ogvPath, 'webmPath': _item.webmPath?_item.webmPath:'', 'imagePath': _item.imagePath, 'data-aspectRatio': _item.aspectRatio});
}else{
div.attr('path', _item.id);
if(currentObj.ytSizeSet){//if we have width and height, aspect ratio always present
div.attr({'data-width': currentObj.mediaWidth, 'data-height': currentObj.mediaHeight, 'data-aspectRatio': currentObj.aspectRatio});
}
}
if(thumbHolder){
//create thumb
if(_item.thumbnail){
thumb=$(new Image()).addClass('thumb_img').appendTo(div).attr('alt', _item.title?_item.title:'').css({
cursor:'pointer',
opacity:0
}).load(function() {
//console.log($(this))
$(this).stop().animate({ 'opacity':1}, {duration: 500, easing: 'easeOutSine'});//fade in thumb
}).error(function(e) {
//console.log("thumb error " + e);
}).attr('src', _item.thumbnail);
}
//active icon
active_icon = $(new Image()).appendTo(div).css({
position: 'absolute',
display: 'none'
}).load(function() {
//console.log(width,height);
$(this).css({
width: this.width,
height: this.height,
left: 50+'%',
top: 50+'%',
marginLeft: -this.width/2+'px',
marginTop: -this.height/2+'px'
})
}).error(function(e) {
//console.log("error " + e);
}).attr('src', ic_active_thumb);
div.data('active_icon',active_icon);
}
_thumbHolderArr.push(div);//we need to have data to manipulate
}
checkPlaylistProcess();
}
（这是一个 youtube api javascript 代码。它的作用是生成带有视频的 alt 属性标题的缩略图。
我想要的是只生成视频的标题。没有缩略图。
该代码生成以下 html（带有缩略图）
<div class="thumbInnerContainer" style="top: 0px; left: 0px; width: 3500px;">
<div class="thumbs playlistSelected" data-id="0" data-type="youtube" path="tRe8JfAQmpI" data-width="640" data-height="360" data-aspectratio="2"><img class="thumb_img" alt="Accelerator after effects project file" style="cursor: pointer; opacity: 1;" src="http://i.ytimg.com/vi/tRe8JfAQmpI/hqdefault.jpg"><img style="position: absolute; display: block; width: 37px; height: 37px; left: 50%; top: 50%; margin-left: -18.5px; margin-top: -18.5px;" src="data/icons/active_item.png">
</div>
<div class="thumbs" data-id="1" data-type="youtube" path="QeusWQ4LFmY" data-width="640" data-height="360" data-aspectratio="2"><img class="thumb_img" alt="After Effects Template Platform" style="cursor: pointer; opacity: 1;" src="http://i.ytimg.com/vi/QeusWQ4LFmY/hqdefault.jpg"><img style="position: absolute; display: none; width: 37px; height: 37px; left: 50%; top: 50%; margin-left: -18.5px; margin-top: -18.5px;" src="data/icons/active_item.png">
</div>
<div class="thumbs" data-id="2" data-type="youtube" path="srGUFQwONXc" data-width="640" data-height="360" data-aspectratio="2"><img class="thumb_img" alt="Photo Album - After Effects Template" style="cursor: pointer; opacity: 1;" src="http://i.ytimg.com/vi/srGUFQwONXc/hqdefault.jpg"><img style="position: absolute; display: none; width: 37px; height: 37px; left: 50%; top: 50%; margin-left: -18.5px; margin-top: -18.5px;" src="data/icons/active_item.png">
</div>
</div>
现在，这就是我想要生成的。（仅图像 alt Title attr，没有缩略图。）
<div class="thumbInnerContainer" style="top: 0px; left: 0px; width: 3500px;">
<div class="thumbs playlistSelected" data-id="0" data-type="youtube" path="tRe8JfAQmpI" data-width="640" data-height="360" data-aspectratio="2">
Accelerator after effects project file
</div>
<div class="thumbs" data-id="1" data-type="youtube" path="QeusWQ4LFmY" data-width="640" data-height="360" data-aspectratio="2">
After Effects Template Platform
</div>
<div class="thumbs" data-id="2" data-type="youtube" path="srGUFQwONXc" data-width="640" data-height="360" data-aspectratio="2">
Photo Album - After Effects Template
</div>
</div>
注意：找到这些行以查看它是如何生成 html 的
//create thumb
if(_item.thumbnail){
thumb=$(new Image()).addClass('thumb_img').appendTo(div).attr('alt', _item.title?_item.title:'').css({
cursor:'pointer',
opacity:0
}).load(function() {
//console.log($(this))
$(this).stop().animate({ 'opacity':1}, {duration: 500, easing: 'easeOutSine'});//fade in thumb
}).error(function(e) {
//console.log("thumb error " + e);
}).attr('src', _item.thumbnail);
}
如何更改为仅生成标题，没有缩略图。？