Is it possible to change the "src" attribute of an existing <script> element using Jquery.attr()? It seemed like a simple way to get JSONP to work but I am not able to make this work for me.
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Why not just add a new script element to the dom?Erik Philips– Erik Philips2012-04-04 08:39:21 +00:00Commented Apr 4, 2012 at 8:39
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3 Answers
It turns out that a script's src can only be set once! It is not possible to change the src attribute of an existing <script> element in the DOM. However, a dynamically created <script> element can have its source set (but exactly once!)
1 Comment
ChickenWing24
i know this is an old answer, but do you have any links to support this. I'm having a similar problem and nothing works so far. any reading materials regarding this would certainly help.
If you're trying to load a script, you could instead use getScript.
http://api.jquery.com/jQuery.getScript/
Or, if you want to change the src for another reason, since script tags can't have id's, you could either use an HTML5 compliant data-id attribute, or match using the existing src. Then you could just change the src value using attr. But this may not load the script on all browsers.
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T.J. Crowder
"since script tags can't have id's," Sure they can, whatever makes you think otherwise?!
Whilst, yes, this is possible, you don't need to do this manually as jQuery has good built-in support for JSON-P requests. See the documentation for the $.getJSON and $.ajax methods.
3 Comments
KJ Saxena
This is not the question. The question is "can you change the src at all if the script tag is pre-existing?"
KJ Saxena
Not a matter of not having gratitude - you interpreted the question wrong. The question was not about how to do JSONP in JQ, it was a technical point about changing script src. Your answer was not helpful.