我在为工作目的制作小书签时遇到了一些奇怪的设置，遇到了一些麻烦。我需要它能够找到页面上的所有视频嵌入并处理信息以生成要插入到我们的画廊设置中的 JSON 代码。问题是我无法可靠地获取处理数据所需的信息。
首先，我在页面上找到具有正确 itemprop 的所有 div
items = $('div[itemprop=video]');
然后使用 $.each() 我开始处理
thumbnail = getThumb($(this).find('*[itemprop=thumbnailUrl]'));
filename = getFilename($(this).find('*[itemprop=contentUrl]'));
filelocation = getFilelocation( $(this).find('*[itemprop=contentUrl]'));
我需要能够获取 thumbnailURL 和 contentURL 进行处理，
function getFilename(gfn) {
if(gfn.prop('tagName') == 'META') {
gfname = gfn.prop('content');
} else {
gfname = gfn.attr('href');
}
x = gfname.lastIndexOf('/');
gfname = gfname.substr(x+1);
y = gfname.lastIndexOf('.');
gfname = gfname.substr(0,y);
return gfname;
}
.prop('tagName')undefined当itemprops不在元标记中时不断返回，有人对如何运行此书签有任何想法吗？
此处提供书签和源代码
编辑：因为有人提到我会继续在这里转储书签代码，去掉多余的 gif
<a href="javascript:(function(){
var jQueryIsReady = function(){
if($('#vid2json_container').length < 1)
{
container = $(document.createElement('div'));
container.attr('id','vid2json_container');
container.css('position','fixed');
container.css('top','0');
container.css('left','0');
container.css('background-color','#222222');
container.css('padding','2px');
container.css('border-style','solid');
container.css('border-width','1px');
container.css('border-color','#000000');
container.css('opacity','0.95');
container.css('z-index','999997');
container.css('width','500px');
container.css('height',window.innerHeight);
container.css('overflow-y','auto');
container.css('overflow-x','hidden');
container.hide();
divider_01 = $(document.createElement('div'));
divider_01.css('clear','both');
logo = $(document.createElement('img'));
logo.attr('src','http://www.cityofdev.com/apps/bookmarklet/vid2json.png');
logo.css('float','left');
close_button = $(document.createElement('img'));
close_button.attr('src','http://www.cityofdev.com/apps/bookmarklet/close_button.jpg');
close_button.css('float','right');
close_button.bind('click',function(){
$('#vid2json_container').hide(500,function(){
$(this).remove();
});
});
output = $(document.createElement('div'));
output.attr('id','vid2json_output');
output.css('color','#ffffff');
container.append(logo);
container.append(close_button);
container.append(divider_01);
container.append(output);
$('body').prepend(container.show(500));
}
destination = $('#vid2json_output');
destination.html('');
items = $('div[itemprop=video]');
output = $(document.createElement('div'));
output.css('display','block');
output.css('padding','0 0 10px');
if(items.length > 0)
{
$.each(items,function(index,el){
title = $(this).find('*[itemprop=name]').attr('content');
thumbnail = getThumb($(this).find('*[itemprop=thumbnailUrl]'));
filename = getFilename($(this).find('*[itemprop=contentUrl]'));
filelocation = getFilelocation($(this).find('*[itemprop=contentUrl]'));
description = $(this).find('*[itemprop=description]').attr('content');
city = getCity();
citylink = getCitylink();
category = getCategory();
categorylink = getCategorylink();
duration = $(this).find('*[itemprop=duration]').attr('content');
head = $(document.createElement('span'));
head.html(title+' -> JSON<br />\n');
head.css('display','block');
head.css('font-weight','700');
head.css('font-size','12px');
textarea = $(document.createElement('textarea'));
textarea.css('width','100%');
textarea.css('height','300px');
textarea.css('margin','0 0 20px');
vCode = '';
vCode += ' {\n';
vCode += ' "title": "'+title+'",\n';
vCode += ' "thumbnail": "'+thumbnail+'",\n';
vCode += ' "filename": "'+filename+'",\n';
vCode += ' "filelocation": "'+filelocation+'",\n';
vCode += ' "description": "'+description+'",\n';
vCode += ' "city": "'+city+'",\n';
vCode += ' "citylink": "'+citylink+'",\n';
vCode += ' "category": "'+category+'",\n';
vCode += ' "categorylink": "'+categorylink+'",\n';
vCode += ' "duration": "'+duration+'",\n';
vCode += ' "height": "",\n';
vCode += ' "width": ""\n';
vCode += ' }\n';
textarea.val(vCode);
output.append(head);
output.append(textarea);
destination.append(output);
});
}else{
output.html('No Items Found');
destination.html(output);
}
scrollToTop = $(document.createElement('div'));
scrollToTop.html('Scroll To Top');
scrollToTop.css('cursor','pointer');
scrollToTop.bind('click',function(){
$('#vid2json_container').animate({ scrollTop: 0 },1000);
});
footer = $(document.createElement('div'));
footer.css('font-size','9px');
footer.css('color','#555555');
footer.css('padding','5px 0');
footer.html('VID2JSON bookmarklet programmed by David A Perez');
destination.append(scrollToTop);
destination.append(footer);
};
var checkJquery = function(){
if(typeof jQuery == 'undefined')
{
script01 = document.createElement('SCRIPT');
script01.src = 'http://code.jquery.com/jquery-1.9.1.min.js';
script01.type = 'text/javascript';
document.getElementsByTagName('head')[0].appendChild(script01);
}else{
clearTimeout(interval);
jQueryIsReady();
}
};
var interval = setInterval(checkJquery,100);
function getCategorylink()
{
catl = location.href;
return catl;
}
function getCategory()
{
cat = $('.cat-header, .category-header').find('span, h1').html();
return cat.replace(/^( ){1,}|( ){1,}$/gi,'');
}
function getCitylink()
{
cl = location.href;
x = cl.indexOf('/',8);
return cl.substr(0,x);
}
function getCity()
{
c = $('title').html();
x = c.lastIndexOf('-');
c = c.substr(x+1);
y = c.lastIndexOf(',');
c = c.substr(0,y);
return c.replace(/^( ){1,}|( ){1,}$/gi,'');
}
function getFilelocation(gfl)
{
if(gfl.is('meta'))
{
gflocation = gfl.prop('content');
}else{
gflocation = gfl.attr('href');
}
x = gflocation.lastIndexOf('/');
gflocation = gflocation.replace(/www/gi,'ww');
gflocation = gflocation.substr(0,x+1);
gflocation = gflocation.replace(/[^\/]{1,}$/,'');
return gflocation.replace(/[\/]{2,}$/,'\/');
}
function getFilename(gfn)
{
if(gfn.is('meta'))
{
gfname = gfn.prop('content');
}else{
gfname = gfn.attr('href');
}
x = gfname.lastIndexOf('/');
gfname = gfname.substr(x+1);
y = gfname.lastIndexOf('.');
gfname = gfname.substr(0,y);
return gfname;
}
function getThumb(gt)
{
alert(gt.is('meta'));
if(gt.is('meta'))
{
gtname = gt.prop('content');
}else{
gtname = gt.attr('src');
}
num = gtname.lastIndexOf('/');
return gtname.substr(num+1);
}
})();">vid2json</a>
这应该作为书签运行，因此可以在其网站上的任何页面上使用。它在网页加载后手动执行，加载 jQuery，一旦准备好就开始处理。似乎导致问题的部分是
$(this).find('*itemprop=ITEMPROP');
当 itemprops 在元标记中时它工作正常但是在这种情况下
<td class="ad" colspan="2" bgcolor="#000000" style="border:solid #CCCCCC 1px;">
<div itemscope itemtype="http://schema.org/LocalBusiness" style="color:#222222; font-weight: bold; text-align: center; width:580px;">
<div itemprop="video" itemscope itemtype="http://schema.org/VideoObject">
<meta itemprop="name" content="P.C.C.S. Dryer Vent Cleaning" />
<meta itemprop="duration" content="T1M20S" />
<meta itemprop="description" content="Fort Worth, TX dryer vent cleaning service." />
<meta itemprop="height" content="580" />
<meta itemprop="width" content="326" />
<a href="http://204.145.110.12/thecityoffortworth.com/videos/pccs-dryer-vent-cleaning.mp4" itemprop="contentURL" style="display:block;width:580px; height:326px; border:0px; margin-bottom:104px;" id="pccs">
<img src="pccs-dryer-vent-cleaning.png" alt="P.C.C.S. Dryer Vent Cleaning" width="580" height="430" border="0" itemprop="thumbnailURL" />
</a>
</div>
<a href="http://www.fortworthsweep.com" class="style5" target="_blank" rel="nofollow" itemprop="url" style="color:#ffffff">www.fortworthsweep.com</a>
</div>
它返回 0 个项目。我试过 .find('meta[itemprop=contentURL],a[itemprop=contentURL]') 但也返回 0 个项目。劫持确实看起来像是一个标签，有什么想法吗？
如果我做错了什么，我也很抱歉，这是我第一次在 Stackoverflow 上发帖，我主要是自学 Javascript 和 jQuery。我正在尽我所能了解什么是可能的，我可以做些什么来提供帮助。感谢您的耐心和帮助！