[JavaScript] - How to Fix 'TypeError: Cannot Read | SheCodes

[JavaScript] - How to Fix 'TypeError: Cannot Read Properties of Undefined (Reading 'target')'

Learn how to resolve the 'TypeError: Cannot read properties of undefined (reading 'target')' error in JavaScript.

πŸ‘©β€πŸ’» Technical question

const toggleInfo = (index, event) => { setVisibleLightIndexes((prev) => { if (prev.includes(index)) { return prev.filter((i) => i !== index); } else { return [...prev, index]; } }); const clickedElement = event.target.closest(".chauvetLights"); if (clickedElement) { clickedElement.classList.toggle("expanded"); } toggleBackgroundColor(event); }; TypeError: Cannot read properties of undefined (reading 'target') at k (home-OO3WpeNb.js:1:102576) at onClick (home-OO3WpeNb.js:1:104620) at Object.Em (index-h-qGlws7.js:38:9852) at km (index-h-qGlws7.js:38:10006) at Cm (index-h-qGlws7.js:38:10063) at Wa (index-h-qGlws7.js:38:31422) at fd (index-h-qGlws7.js:38:31839) at index-h-qGlws7.js:38:36751 at Vs (index-h-qGlws7.js:41:36768) at Df (index-h-qGlws7.js:38:8988)

More coding questions about JavaScript

πŸ‘©β€πŸ’» Technical question

how do i loop through an array and object until the max question has been reached?

πŸ‘©β€πŸ’» Technical question

how to display milliseconds timer in realtime with javascript

πŸ‘©β€πŸ’» Technical question

on a page with just a button, how can I change the color of the whole background? It should be responsive

πŸ‘©β€πŸ’» HTML, CSS and JavaScript Code instructions

Asked 9 days ago in JavaScript by Sarah-Leigh

Log the number of milliseconds in the current time

πŸ‘©β€πŸ’» Technical question

how to return a random object from an array

πŸ‘©β€πŸ’» Technical question

how to remove duplicate characters in a string

πŸ‘©β€πŸ’» Technical question

how to display the number of milliseconds only the last 3 digits

πŸ‘©β€πŸ’» Technical question

reverse a string

πŸ‘©β€πŸ’» Technical question

how do i show only the first option in the loop through an array?

πŸ‘©β€πŸ’» Technical question

how to sort letters in a string in alphabetical order

πŸ‘©β€πŸ’» Technical question

can you explain to me the .map function please

πŸ‘©β€πŸ’» Technical question

how can i add a class to an element via js selectors?

πŸ‘©β€πŸ’» Technical question

what are objects in JavaScript

πŸ‘©β€πŸ’» Technical question

How to delete an upload in your github

πŸ‘©β€πŸ’» Technical question

Asked 13 days ago in JavaScript by Sarah-Leigh

what is the purpose of using console log in javascript?

πŸ‘©β€πŸ’» Technical question

How to create an array of 3 cities with a few properties and console log each city temperature

πŸ‘©β€πŸ’» Technical question

what is the difference between an object and an array

πŸ‘©β€πŸ’» Technical question

difference between an object and an array

πŸ‘©β€πŸ’» Technical question

how I can make a five minute timer in java script?

πŸ‘©β€πŸ’» Technical question

for each in java script

πŸ‘©β€πŸ’» Technical question

else if in java script

πŸ‘©β€πŸ’» Technical question

str length

πŸ‘©β€πŸ’» Technical question

loop through the str

πŸ‘©β€πŸ’» Technical question

capitalize str

πŸ‘©β€πŸ’» Technical question

append with strings

πŸ‘©β€πŸ’» Technical question

string length in java script

πŸ‘©β€πŸ’» Technical question

string length in JS

πŸ‘©β€πŸ’» Technical question

split () and join() java script

πŸ‘©β€πŸ’» Technical question

how can i use the reverse() and the join() methods together on an array?

πŸ‘©β€πŸ’» Technical question

Asked 16 days ago in JavaScript by Nomthandazo

How can I loop an object in javascript

πŸ‘©β€πŸ’» Technical question

Asked 17 days ago in JavaScript by Amanda Ntumba

how to add two alerts on one prompt in javascript for html

πŸ‘©β€πŸ’» Technical question

what's the not equal comparison operator?

πŸ‘©β€πŸ’» Technical question

what is \r\n

πŸ‘©β€πŸ’» Technical question

how to use ".innerhtml"

πŸ‘©β€πŸ’» Technical question

what is greater sign in javascript?

πŸ‘©β€πŸ’» JavaScript Code instructions

greater than sign in javascript and how to use it

πŸ‘©β€πŸ’» Technical question

what does head mean in the context of git?

πŸ‘©β€πŸ’» Technical question

what's the difference between git fetch and git pull?

πŸ‘©β€πŸ’» Technical question

what's square bracket notation in js?

πŸ‘©β€πŸ’» Technical question

what's DOM?

πŸ‘©β€πŸ’» Technical question

What does textcontent mean in javascript

πŸ‘©β€πŸ’» Technical question

What is the logical AND operator in JavaScript?

πŸ‘©β€πŸ’» Technical question

What does parse float mean in JavaScript

πŸ‘©β€πŸ’» Technical question

what are break statements in javascript

πŸ‘©β€πŸ’» Technical question

what does .push mean ?

πŸ‘©β€πŸ’» Technical question

What does console.log mean in JavaScript?

πŸ‘©β€πŸ’» Technical question

how to use trim in js

πŸ‘©β€πŸ’» Technical question

What is const

πŸ‘©β€πŸ’» Technical question

Math functions in js

πŸ‘©β€πŸ’» Technical question

what does setInterval(() mean?