使用jQuery更改目标属性
[英]Change a target attribute with jQuery
问题描述
I'm trying to add target="_new" to every a tag after appending some content to the dom but I'm not being successful. 
我想补充target="_new"每a附加一些内容到DOM后标签，但我不是成功的。
Please run the snippet and click " Go CORS Go ", wait until the content is fully loaded and try to click on the duck. 请运行代码段 ，然后单击“ Go CORS Go ”，等待内容完全加载，然后尝试单击鸭子。 Despite being an a tag, the new attribute doesn't seem to work. 尽管是a标签，新的属性似乎并没有工作。 Any insights ? 有什么见解吗？
var url = encodeURIComponent("https://duckduckgo.com/"); $("button").click(function() { $.getJSON('http://anyorigin.com/get/?url=' + url + '&callback=?', function(data) { var cors = data.contents; $("body").append(cors); $('body a').each(function() { $(this).attr('target', "_blank"); }); }); });
<!DOCTYPE html> <html> <head> <base href="https://duckduckgo.com/" /> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js"></script> </head> <body> <button>Go CORS Go</button> </body> </html>
4 个解决方案
解决方案1
1 已采纳 2016-05-24 04:12:36
Edit the ajax result instead of the result of the page after the append 编辑ajax结果，而不是附加后的页面结果
try the following: 尝试以下方法：
var newcors = $(cors).find('a').attr('target', "_blank").end();
$('body').append(newcors);
解决方案2
1 2016-05-24 04:23:04
Response returned by ajax had a script which is causing an error, ReferenceError: DDG is not defined(…) which will hald the execution of statements after the ReferenceError 由ajax返回的响应具有导致错误的脚本， ReferenceError: DDG is not defined(…) ，该脚本将在ReferenceError之后暂停语句的执行
Place your .append statement in try..catch hence error will not affect your later script. 将您的.append语句放入try..catch因此错误不会影响您以后的脚本。
var url = encodeURIComponent("https://duckduckgo.com/"); $("button").click(function() { $.getJSON('http://anyorigin.com/get/?url=' + url + '&callback=?', function(data) { var cors = data.contents; try { $("body").append(cors); } catch (Exception) { console.log(Exception); } $('body a').attr('target', "_blank"); }); });
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script> <button>Go CORS Go</button>
Update: As suggested in comments, .attr( attributeName, value ) sets one or more attributes for the set of matched elements so no need to iterate a elements. 更新：由于在提出意见， .attr( attributeName, value ) 设置一个或多个属性为匹配的元素集合所以没有必要重复的 a元素。
解决方案3
1 2016-05-24 04:25:37
I assume that all the a elements are stored in cors . 我假设所有a元素都存储在cors 。
You can set their targets before appending them to body . 您可以在将它们附加到body之前设置它们的目标。
Eg 例如
$("button").click(function() {
$.getJSON('http://anyorigin.com/get/?url=' + url + '&callback=?', function(data) {
var $cors = $(data.contents);
$cors.find('a').attr('target', '_blank');
$('body').append($cors);
});
});
解决方案4
0 2016-05-24 04:22:49
Try this simple line 试试这条简单的线
Old 旧
$("body").append(cors);
$('body a').each(function() {
$(this).attr('target', "_blank");
});
Updated 更新
$("body").append(cors).find("a").attr('target', "_new");
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