Uncaught TypeError: Cannot read property 'apply' of undefined error

RE: Uncaught TypeError: Cannot read property 'apply' of undefined error

2022-03-14T17:49:49Z

In JavaScript almost everything is an object, null and undefined are exceptions. This error occurs when a property is read or a function is called on an undefined variable. Undefined means that a variable has been declared but has not been assigned a value. In JavaScript, properties and functions can only belong to objects. Since undefined is not an object type, calling a function or a property on such a variable causes the TypeError: Cannot read property of undefined.

If you are not sure a variable that will always have some value, the best practice is to check the value of variables for null or undefined before using them. To avoid getting these types of errors, you need to make sure that the variables you are trying to read do have the correct value. This can be done in various ways. You can do if checks before dealing with objects whose values are bound to change:

if (myVar !== undefined) {
...
}

if (typeof(myVar) !== 'undefined') {
...
}

RE: Uncaught TypeError: Cannot read property 'apply' of undefined error

2020-11-23T14:23:20Z

Hi Olaf,

Thanks for your response. Its resolved now.

The issue was with our custom theme and found that there was some jquery conflicts in our theme which was causing issue.

Regards,

Aravinth

RE: Uncaught TypeError: Cannot read property 'apply' of undefined error

2020-11-23T08:08:22Z

I don't get that message. It might help if you give a few more steps to reproduce: In which situations do you observe it? Which version (fixpack)? What do you need to have on a page?

Uncaught TypeError: Cannot read property 'apply' of undefined error

2020-11-19T17:48:33Z

Hi Team,

We are using Liferay DXP 7.2 and we get the below error. Its not blocking any functionality but it shows error in browser console. Did anyone face such issue. Could you please guide us. Thanks in Advance.

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