javascript - Add data element to element

Question

I have a link. Like this:

<a href="#" title="Title from this link"></a>

I want remove this title and put the title text in a data attribute. As data-title. How can i make this with jquery. So remove the title element. And place the text of the title element. In a new title data element.

Thanks

Answer 1

// you'd probably wanna give an unique id to your anchor to more easily identify it
var anchor = $('a'); 
var title = anchor.attr('title');
anchor.removeAttr('title');
anchor.attr('data-title', title);

Answer 2

// set title data-title to value of title
$("a").attr("data-title", $("a").attr("title"))
// clear title
$("a").attr("title", "");

另外我会给你的链接一个class，所以这个动作不会a在整个页面上运行。

Answer 3

设置元素属性的用户attr方法。以及removeAttr删除属性的方法

 $("a").attr("data-title", $("a").attr("title"));
 $("a").attr("title", ""); 
 // or
 $("a").removeAttr("title"); 

PS：会为锚元素建议一个唯一的 id 或一个类

Answer 4

尝试：

$("a").attr("data-title", $("a").attr("title"));
$("a").removeAttr("title");

Answer 5

jsfiddle 链接：http: //jsfiddle.net/NEBh4/

您可以使用 firebug 或任何其他开发工具查看结果窗口中的链接发生的更改

$(document).ready(function(){
//example code one
var tempLink = $('#link');//cash the jquery object for performance
tempLink.attr('data-title', tempLink.attr('title')).removeAttr('title');

/*In above example I used an id to capture the html element, which mean u can only do above step only for one element. If you want to apply above step for many links you can use the following code. In this case I'm using a class name for the link element*/

//example code two
$('.link').each(function(){
    $(this).attr('data-title', $(this).attr('title')).removeAttr('title');
});

});

上述示例的 HTML

<!-- for example code one -->
<a id="link" class="link" href="#" title="Title from this link"></a>

<!-- for example code two -->
<a class="link" href="#" title="Title from this link 1"></a>
<a class="link" href="#" title="Title from this link 2"></a>
<a class="link" href="#" title="Title from this link 3"></a>

Answer 6

<a id="1" href="#" title="Title from this link 1"></a>
<a id="2" href="#" title="Title from this link 2"></a>

var t = $("a[title='Title from this link 1']").attr("title");
$("#2").attr("title", t);