“Uncaught TypeError: Cannot read property 'addEventListener' of undefined” Code Answer

Mostly in JavaScript, there is an error that you may face. this error looks like this.

Uncaught TypeError Cannot read property 'addeventlistener' of null

Its main cause is the dysfunctionality of JavaScript to add an event listener to an element for executing a function. It may occurs when getElementById() function is not working.

Uncaught TypeError: Cannot read property 'addEventListener' of undefined

on Jan 01, 1970
1)Check you placed .before the class
Example:
document.getElementsByClassName('.yourclassname') //.before class name is wrong
the code should be document.getElementsByClassName('yourclassname');
2)Check the spelling for addEventListener 
///dont feel embrassed because i always do these mistakes eventhough i used this property it 10000 times

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Note that you must use the fresh version of jQuery in your code. Keep in mind that to avoid errors, HTML codes should be arranged appropriately.

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