如何使用字符串中的javascript获取锚标记的href值

Question

如何使用纯javascript，在没有Jquery的情况下，在下面的字符串内容中获取最后一个锚标记的href值。

var contents = '<div id="content"><a href="http://www.okhype.com/wp-content/uploads/2016/12/ruffcoin-made-in-aba.jpg"><img title="Ruffcoin-Made-In-Aba.jpg" class="alignnone size-full" alt="image" src="http://www.okhype.com/wp-content/uploads/2016/12/ruffcoin-made-in-aba.jpg" /></a>↵↵↵↵Indigenous heavyweight, <a href="http://www.okhype.com/tag/ruffcoin">Ruffcoin</a> recently dropped a new album titled “Made In Aba“. I’ve been giving it a few spins, and I must say, the album is quite solid.↵↵[matrix]↵↵Two of my early faves are “Aba Made” and “Higher Higher which feature <a href="http://www.okhype.com/tag/sparkle">Sparkle</a>)”. You should check ’em out, then download on iTunes <a href="https://itunes.apple.com/us/album/made-in-aba/id1180901826?ign-mpt=uo%3D4"><strong>hereq</strong></a>.↵↵Cop below.↵↵[audio mp3="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_-_Aba_Made_Okhype.com_.mp3"][/audio]<strong><a href="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_-_Aba_Made_Okhype.com_.mp3">DOWNLOAD Ruffcoin - Aba Made</a></strong>↵↵[audio mp3="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_ft_Sparkle_-_Higher_Higher_Okhype.com_.mp3"][/audio]<strong><a href="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_ft_Sparkle_-_Higher_Higher_Okhype.com_.mp3">DOWNLOAD Ruffcoin ft Sparkle - Higher Higher</a></strong></div>';

这是我想要的部分

href="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_ft_Sparkle_-_Higher_Higher_Okhype.com_.mp3"

Answer 1

如果您创建一个元素并将HTML字符串插入其中，则可以使用常用的DOM方法getElementsByTagName或querySelector / querySelectorAll来操作HTML：

 var contents = '<div id="content"><a href="http://www.okhype.com/wp-content/uploads/2016/12/ruffcoin-made-in-aba.jpg"><img title="Ruffcoin-Made-In-Aba.jpg" class="alignnone size-full" alt="image" src="http://www.okhype.com/wp-content/uploads/2016/12/ruffcoin-made-in-aba.jpg" /></a>↵↵↵↵Indigenous heavyweight, <a href="http://www.okhype.com/tag/ruffcoin">Ruffcoin</a> recently dropped a new album titled “Made In Aba“. I've been giving it a few spins, and I must say, the album is quite solid.↵↵[matrix]↵↵Two of my early faves are “Aba Made” and “Higher Higher which feature <a href="http://www.okhype.com/tag/sparkle">Sparkle</a>)”. You should check 'em out, then download on iTunes <a href="https://itunes.apple.com/us/album/made-in-aba/id1180901826?ign-mpt=uo%3D4"><strong>hereq</strong></a>.↵↵Cop below.↵↵[audio mp3="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_-_Aba_Made_Okhype.com_.mp3"][/audio]<strong><a href="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_-_Aba_Made_Okhype.com_.mp3">DOWNLOAD Ruffcoin - Aba Made</a></strong>↵↵[audio mp3="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_ft_Sparkle_-_Higher_Higher_Okhype.com_.mp3"][/audio]<strong><a href="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_ft_Sparkle_-_Higher_Higher_Okhype.com_.mp3">DOWNLOAD Ruffcoin ft Sparkle - Higher Higher</a></strong></div>'; var snippet = document.createElement("div"); snippet.innerHTML=contents; var links = snippet.getElementsByTagName("a"), lastURL = links[links.length-1].href; // or getAttribute("href") console.log(lastURL); 

Answer 2

使用html内容生成临时元素 （或使用DOMParser ）并获取其中的标记属性。

 var contents = '<div id="content"><a href="http://www.okhype.com/wp-content/uploads/2016/12/ruffcoin-made-in-aba.jpg"><img title="Ruffcoin-Made-In-Aba.jpg" class="alignnone size-full" alt="image" src="http://www.okhype.com/wp-content/uploads/2016/12/ruffcoin-made-in-aba.jpg" /></a>↵↵↵↵Indigenous heavyweight, <a href="http://www.okhype.com/tag/ruffcoin">Ruffcoin</a> recently dropped a new album titled “Made In Aba“. I've been giving it a few spins, and I must say, the album is quite solid.↵↵[matrix]↵↵Two of my early faves are “Aba Made” and “Higher Higher which feature <a href="http://www.okhype.com/tag/sparkle">Sparkle</a>)”. You should check 'em out, then download on iTunes <a href="https://itunes.apple.com/us/album/made-in-aba/id1180901826?ign-mpt=uo%3D4"><strong>hereq</strong></a>.↵↵Cop below.↵↵[audio mp3="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_-_Aba_Made_Okhype.com_.mp3"][/audio]<strong><a href="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_-_Aba_Made_Okhype.com_.mp3">DOWNLOAD Ruffcoin - Aba Made</a></strong>↵↵[audio mp3="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_ft_Sparkle_-_Higher_Higher_Okhype.com_.mp3"][/audio]<strong><a href="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_ft_Sparkle_-_Higher_Higher_Okhype.com_.mp3">DOWNLOAD Ruffcoin ft Sparkle - Higher Higher</a></strong></div>'; var temp = document.createElement('div'); temp.innerHTML = contents; // if you want to get a tag within strong tag console.log( temp.querySelector('strong a').getAttribute('href') ); // if you want to get the last link var ele = temp.getElementsByTagName('a'); console.log( ele[ele.length - 1].getAttribute('href') ); 

Answer 3

尝试这个：

 var contents = '<div id="content"><a href="http://www.okhype.com/wp-content/uploads/2016/12/ruffcoin-made-in-aba.jpg"><img title="Ruffcoin-Made-In-Aba.jpg" class="alignnone size-full" alt="image" src="http://www.okhype.com/wp-content/uploads/2016/12/ruffcoin-made-in-aba.jpg" /></a>↵↵↵↵Indigenous heavyweight, <a href="http://www.okhype.com/tag/ruffcoin">Ruffcoin</a> recently dropped a new album titled “Made In Aba“. I've been giving it a few spins, and I must say, the album is quite solid.↵↵[matrix]↵↵Two of my early faves are “Aba Made” and “Higher Higher which feature <a href="http://www.okhype.com/tag/sparkle">Sparkle</a>)”. You should check 'em out, then download on iTunes <a href="https://itunes.apple.com/us/album/made-in-aba/id1180901826?ign-mpt=uo%3D4"><strong>hereq</strong></a>.↵↵Cop below.↵↵[audio mp3="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_-_Aba_Made_Okhype.com_.mp3"][/audio]<strong><a href="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_-_Aba_Made_Okhype.com_.mp3">DOWNLOAD Ruffcoin - Aba Made</a></strong>↵↵[audio mp3="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_ft_Sparkle_-_Higher_Higher_Okhype.com_.mp3"][/audio]<strong><a href="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_ft_Sparkle_-_Higher_Higher_Okhype.com_.mp3">DOWNLOAD Ruffcoin ft Sparkle - Higher Higher</a></strong></div>'; var hrefs = contents.match(/href="([^"]*)/g); var href = hrefs[hrefs.length-1]; console.log(href); 

Answer 4

如果您知道该字符串来自可靠的源，您可以将其弹出到div并使用DOM函数，如下所示：

 var contents = '<div id="content"><a href="http://www.okhype.com/wp-content/uploads/2016/12/ruffcoin-made-in-aba.jpg"><img title="Ruffcoin-Made-In-Aba.jpg" class="alignnone size-full" alt="image" src="http://www.okhype.com/wp-content/uploads/2016/12/ruffcoin-made-in-aba.jpg" /></a>↵↵↵↵Indigenous heavyweight, <a href="http://www.okhype.com/tag/ruffcoin">Ruffcoin</a> recently dropped a new album titled “Made In Aba“. I've been giving it a few spins, and I must say, the album is quite solid.↵↵[matrix]↵↵Two of my early faves are “Aba Made” and “Higher Higher which feature <a href="http://www.okhype.com/tag/sparkle">Sparkle</a>)”. You should check 'em out, then download on iTunes <a href="https://itunes.apple.com/us/album/made-in-aba/id1180901826?ign-mpt=uo%3D4"><strong>hereq</strong></a>.↵↵Cop below.↵↵[audio mp3="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_-_Aba_Made_Okhype.com_.mp3"][/audio]<strong><a href="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_-_Aba_Made_Okhype.com_.mp3">DOWNLOAD Ruffcoin - Aba Made</a></strong>↵↵[audio mp3="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_ft_Sparkle_-_Higher_Higher_Okhype.com_.mp3"][/audio]<strong><a href="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_ft_Sparkle_-_Higher_Higher_Okhype.com_.mp3">DOWNLOAD Ruffcoin ft Sparkle - Higher Higher</a></strong></div>'; var container = document.createElement('div'); container.innerHTML = contents; var anchorTags = Array.prototype.slice.call(container.getElementsByTagName('a')); // Get all anchor tags && convert collection to array console.log(anchorTags.pop().href); // Get last anchor tag and log its href property 

Answer 5

 var contents = '<div id="content"><a href="http://www.okhype.com/wp-content/uploads/2016/12/ruffcoin-made-in-aba.jpg"><img title="Ruffcoin-Made-In-Aba.jpg" class="alignnone size-full" alt="image" src="http://www.okhype.com/wp-content/uploads/2016/12/ruffcoin-made-in-aba.jpg" /></a>↵↵↵↵Indigenous heavyweight, <a href="http://www.okhype.com/tag/ruffcoin">Ruffcoin</a> recently dropped a new album titled “Made In Aba“. I've been giving it a few spins, and I must say, the album is quite solid.↵↵[matrix]↵↵Two of my early faves are “Aba Made” and “Higher Higher which feature <a href="http://www.okhype.com/tag/sparkle">Sparkle</a>)”. You should check 'em out, then download on iTunes <a href="https://itunes.apple.com/us/album/made-in-aba/id1180901826?ign-mpt=uo%3D4"><strong>hereq</strong></a>.↵↵Cop below.↵↵[audio mp3="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_-_Aba_Made_Okhype.com_.mp3"][/audio]<strong><a href="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_-_Aba_Made_Okhype.com_.mp3">DOWNLOAD Ruffcoin - Aba Made</a></strong>↵↵[audio mp3="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_ft_Sparkle_-_Higher_Higher_Okhype.com_.mp3"][/audio]<strong><a href="http://www.okhype.com/wp-content/uploads/2016/12/Ruffcoin_ft_Sparkle_-_Higher_Higher_Okhype.com_.mp3">DOWNLOAD Ruffcoin ft Sparkle - Higher Higher</a></strong></div>'; // Create element that will temporarially house the elements in the string var temp = document.createElement('div'); // Convert the string to child elements temp.innerHTML = contents; // Get all the links var links = temp.querySelectorAll("a"); // Get the contents of the href attribute of the last link: console.log(links[links.length-1].href); 

Answer 6

尝试这个 ：

  var links = snippet.getElementsByTagName("a");
  links(links.length - 1).getAttribute('href');