How can I change HTML attribute names with jQuery?

Question

I would like to change all the names of the attributes where class=\"testingCase\" throughout all my whole html document.

e.g. Change:

&         


        

Answer 1

One liner

$('selector').replaceWith($('selector')[0].outerHTML.replace("oldName=","newName="));

worked great for me when I needed to strip a prefix from all of my attributes

$('selector').replaceWith($('selector')[0].outerHTML.(/prefix\-/g,""));

Answer 2

There is no built-in method/function to "rename" an attribute in javascript, but you can create new attributes and remove other ones...

$('a.testingCase[title]').each(function() {
  var $t = $(this);
  $t.attr({
      newTitleName: $t.attr('title')
    })
    .removeAttr('title');
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<a class="testingCase" href="#" title="name of testing case">Blabla</a>
<a class="testingCase" href="#" title="name of another testing case">Bloo</a>

Edit: added in the bit that makes it only select a elements with class="testingCase"

Answer 3

same answer as @nickf but cleaner code:

$('a.testingCase[title]').each(function() {
    var curElem = $(this);
    curElem.attr("newTitleName", curElem.attr('title')).removeAttr('title');
});

Answer 4

It works for me!

$('input[name="descricao"]').attr('name', 'title');

Answer 5

I don't think you can change an attribute name but what you can do is :

• get all the <a> tags with a title attribute;
• foreach of them, create a newTitleName attribute with the same value as the title;
• then delete the title attribute.

JQuery let you do that with builtin functions this way :

/* get all <a> with a "title" attribute that are testingCase
then apply an anonymous function on each of them */

$('a.testingCase[title]').each(function() {   

    /* create a jquery object from the <a> DOM object */
    var $a_with_title = $(this);    

    /* add the new attribute with the title value */
    $a_with_title.attr("newTitleName", $a_with_title.getAttribute('title'));

    /* remove the old attribute */
    $a_with_title.removeAttr('title'); 

});

Answer 6

Here's a simple jquery-style plugin that gives you a renameAttr method:

// Rename an entity attribute
jQuery.fn.renameAttr = function(oldName, newName) {
    var args = arguments[0] || {}; 
    var o = $(this[0]) 

       o
        .attr(
            newName, o.attr(oldName)
        )
        .removeAttr(oldName)
        ;
};

There is also this example which adds an option to remove the data for the old attribute.