Setting an attribute to the last position

Is it possible to set a new attribute to the last position of a html element using javascript/jQuery?

This would be helpfull for me in a case where the attribute order is important to decide whether the paragraph has changed or not.

Example:

<p attribute1="true" attribute2="true">

Now, i would like to add a third attribute so that the resulting paragraph wo开发者_如何学JAVAuld look like

<p attribute1="true" attribute2="true" attribute3="true"> 

No, it's not possible. Attributes are unordered in HTML and XHTML markup languages, so browsers are free to return them in whatever order they like, e.g. alphabetic, specified, etc.

You should rethink your approach, for instance using the .data() method to track changes:

$("#el").data("changeHistory", []);

// ...
$("#el").data("changeHistory").push(new Date().toString());

Optimally you should never be in a position where you need to read attributes in order (by index).

If you have an element like so <div id="container">, you can add an attribute using jQuery like so $('#container').attr('disabled', true);. Keep in mind this should add the attribute to the end of the element.

Another tip is if you are looking to modify a DOM element attribute such as style, consider looking at the jQuery API to see what methods are avialable before writing anything too crude. For example, if you wanted to add a style you could simply do $('#container').addClass('hover');