目標iframe src裏面的ajax_injected塊代碼

Question

我有一塊代碼是吐出來的oembed。那麼我需要定位iframes的src屬性並將其替換爲data-src。

她是我所目前：

embed_request = { 
     url: url, 
     dataType: "jsonp", 
     cache: false, 
     success: function (data) { 
     try {   
      var embed_html = (data.html).replace('src', 'data-src'); 
      $("div#item"+number).html(embed_html); 
     } catch (err) { 
      console.log(err); 
     } 
     } 
    };  

$.ajax(embed_request); 

的問題是，我的替換（）以上的變化太多src的代碼塊內data.html

如何通過JavaScript或jQuery的告訴這裏var embed_html = (data.html).replace('src', 'data-src');只改變它運行的iframe的src到大量的html代碼中。

今天，不幸的是我當前的代碼改變不僅低於IFRAME SRC也是src="//platform.instagram.com/en_US/embeds.js"在src：

<iframe src="https://www.instagram.com/p/64567SDFFDFS/embed/captioned/?cr=1&amp;v=7" class="instagram-media instagram-media-rendered" id="instagram-embed-0" allowtransparency="true" frameborder="0" height="849" data-instgrm-payload-id="instagram-media-payload-0" scrolling="no" style="border: 1px solid rgb(219, 219, 219);"></iframe> 
<script async="" defer="" src="//platform.instagram.com/en_US/embeds.js"></script> 

所以我拿到最終吐盡觀點：

<iframe data-src="https://www.instagram.com/p/64567SDFFDFS/embed/captioned/?cr=1&amp;v=7" class="instagram-media instagram-media-rendered" id="instagram-embed-0" allowtransparency="true" frameborder="0" height="849" data-instgrm-payload-id="instagram-media-payload-0" scrolling="no" style="border: 1px solid rgb(219, 219, 219);"></iframe> 
    <script async="" defer="" data-src="//platform.instagram.com/en_US/embeds.js"></script> 

如何唯一目標iframe的src？

由於

EDIT

下面是由透過oEmbed

的Instagram

<div class="item active" id="item1"> 
<iframe class="instagram-media instagram-media-rendered" id="instagram-embed-0" src="https://www.instagram.com/p/BPodiIYgG3K/embed/captioned/?cr=1&amp;v=7" allowtransparency="true" frameborder="0" height="776" data-instgrm-payload-id="instagram-media-payload-0" scrolling="no" style="border: 1px solid rgb(219, 219, 219); margin: 1px 1px 12px; max-width: 320px; width: calc(100% - 2px); border-radius: 4px; box-shadow: none; display: block; padding: 0px; background: rgb(255, 255, 255);"></iframe> 
    <script async="" defer="" src="//platform.instagram.com/en_US/embeds.js"></script> 
</div> 

下發射的Facebook

<div class="item " id="item2"> 

      <div id="fb-root" class=" fb_reset"><div style="position: absolute; top: -10000px; height: 0px; width: 0px;"><div></div></div><div style="position: absolute; top: -10000px; height: 0px; width: 0px;"><div><iframe name="fb_xdm_frame_http" frameborder="0" allowtransparency="true" allowfullscreen="true" scrolling="no" title="Facebook Cross Domain Communication Frame" aria-hidden="true" tabindex="-1" id="fb_xdm_frame_http" src="http://staticxx.facebook.com/connect/xd_arbiter/r/0eWevUAMuoH.js?version=42#channel=f3e391184&amp;origin=http%3A%2F%2Flocalhost%3A3000" style="border: none;"></iframe><iframe name="fb_xdm_frame_https" frameborder="0" allowtransparency="true" allowfullscreen="true" scrolling="no" title="Facebook Cross Domain Communication Frame" aria-hidden="true" tabindex="-1" id="fb_xdm_frame_https" src="https://staticxx.facebook.com/connect/xd_arbiter/r/0eWevUAMuoH.js?version=42#channel=f3e391184&amp;origin=http%3A%2F%2Flocalhost%3A3000" style="border: none;"></iframe></div></div></div> 
    <script>(function(d, s, id) { 
     var js, fjs = d.getElementsByTagName(s)[0]; 
     if (d.getElementById(id)) return; 
     js = d.createElement(s); js.id = id; 
     js.src = "//connect.facebook.net/fr_FR/sdk.js#xfbml=1&version=v2.3"; 
     fjs.parentNode.insertBefore(js, fjs); 
    }(document, 'script', 'facebook-jssdk'));</script><div class="fb-post fb_iframe_widget" data-href="https://www.facebook.com/cocacolafrance/posts/1526674334016658" data-width="536" fb-xfbml-state="rendered" fb-iframe-plugin-query="app_id=&amp;container_width=0&amp;href=https%3A%2F%2Fwww.facebook.com%2Fcocacolafrance%2Fposts%2F1526674334016658&amp;locale=fr_FR&amp;sdk=joey&amp;width=536"><span style="vertical-align: bottom; width: 536px; height: 404px;"><iframe name="f2115553f8" width="536px" height="1000px" frameborder="0" allowtransparency="true" allowfullscreen="true" scrolling="no" title="fb:post Facebook Social Plugin" src="https://www.facebook.com/v2.3/plugins/post.php?app_id=&amp;channel=http%3A%2F%2Fstaticxx.facebook.com%2Fconnect%2Fxd_arbiter%2Fr%2F0eWevUAMuoH.js%3Fversion%3D42%23cb%3Dfc155ce24%26domain%3Dlocalhost%26origin%3Dhttp%253A%252F%252Flocalhost%253A3000%252Ff3e391184%26relation%3Dparent.parent&amp;container_width=0&amp;href=https%3A%2F%2Fwww.facebook.com%2Fcocacolafrance%2Fposts%2F1526674334016658&amp;locale=fr_FR&amp;sdk=joey&amp;width=536" class="" style="border: none; visibility: visible; width: 536px; height: 404px;"></iframe></span></div></div> 

的HTML代碼塊的兩個示例

Answer 1

您可以將標記字符串HTML元素（關DOM），然後再找到任何iframe元素，取代它們的屬性（S），並添加了整個事情的DOM：

embed_request = { 
    url: url, 
    dataType: "jsonp", 
    cache: false, 
    success: function (data) { 
    try {   
     $(data.html).filter('iframe').each(function() { 
     var $this = $(this); 
     $this.attr('data-src', $this.attr('src')).removeAttr('src'); 
     }).end().appendTo("div#item"+number); 
    } catch (err) { 
     console.log(err); 
    } 
    } 
};  

$.ajax(embed_request); 

這裏有一個樣機（取而代之的是一個函數調用等Ajax調用），以表明它的工作：

var number = 1, 
 
    data = {html: atob("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")}; // this is the html provided by you, containing the iframe and script tag, but I had to base64 encode it, as otherwise the code snippet tool wouldn't let me insert it 
 

 
(function (data) { 
 
    try {   
 
    $(data.html).filter('iframe').each(function() { 
 
     var $this = $(this); 
 
     $this.attr('data-src', $this.attr('src')).removeAttr('src'); 
 
    }).end().appendTo("div#item"+number); 
 
    } catch (err) { 
 
    console.log(err.message); 
 
    } 
 
})(data);

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> 
 
<div id="item1"></div>