That question is generic.

I can't understand because when i include a bit of javacript code, only for testing something in magento, the following error returns:

Uncaught TypeError: Cannot read property

Anyone could give me an exemple of how a testing code should be?

This is the code I tested:


2 Answers 2


Magento use prototype.js framework. So if you want to use jQuery to read an element.

Use jQuery instead of $

  • That's right I tested it and it worked perfect. Thank You Very Much Commented Jul 8, 2015 at 19:17
  • For me, if i move attribute to attribute set i am getting error like snag.gy/Nmgn6p.jpg can u help me to get out this error?
    – Gem
    Commented Oct 22, 2018 at 6:24

Your issue is probably because $ is calling prototype and you are trying to access a property of a jQuery object. You should use a jQuery.noConflict() to prevent this kind of issues in the future. There are several guides to achieve this with different approaches, use the one you are more comfortable with.

  • Thanks a lot I'll find out more about what you said Commented Jul 8, 2015 at 19:17

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