samedi 21 mars 2015

JQuery keyword "this" does not get attribute value


I am playing around with the JQuery keyword this.


I have come across something I do not understand. Here is my code:



<body>
<a id="link_1">jQuery.com</a>

<!-- adding JQUERY -->
<script src="http://ift.tt/1vhyxae"></script>
<!-- my JavaScript -->
<script>
$("a").attr("href", "target_1");
$("a").attr("new_attribute", "new_attribute_value");

$(function ($) {
$("a").mouseenter(function(){
alert(this.id);
alert(this.href);
alert(this.new_attribute);
});
});
</script>
</body>


I want JQuery to return the id, href and my new_attribute as an alert message.


I can call the id on the keyword 'this' (with this.id) and it works as expected. I can also call the href on the keyword this (with this.href) and it works as expected (even though I set the value of href with JQuery only (an not inline)).


However with the new attribute "new_attribute" this kind of set & get does not work as expected.


my question: What am I doing wrong? Is it only possible to call 'certain /limited' attributes on the keyword 'this'.





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