JavaScript
How To Prevent cannot read property map of undefined
The "cannot read property map of undefined" error occurs when we try to call the map method on a variable that stores an undefined or null value.
![How To Prevent cannot read property map of undefined](/content/images/size/w1460/2023/05/Cannot-read-property-map-of-undefined..png)
How can I remove a specific item from an array in JavaScript?
Removing a specific item from an array is the most use case a developer runs into. You will learn more than 7 ways to achieve this.
![How can I remove a specific item from an array in JavaScript?](/content/images/size/w1460/2023/05/remove-an-item-from-an-array-1.png)
A Complete Guide To JavaScript LocalStorage
localStorage is a property of the window object in JavaScript that allows you to store key/value pairs in a web browser. The data stored in localStorage persist even after the browser is closed, making it a useful tool for saving user data on the client side.
![A Complete Guide To JavaScript LocalStorage](/content/images/size/w1460/2023/02/JavaScript-Local-Storage-3.png)
How to Prevent cannot read property split of undefined
The "cannot read property split of undefined" error occurs when we try to call the split() method on a variable that stores an undefined value.
![How to Prevent cannot read property split of undefined](/content/images/size/w1460/2023/02/prevent-cannot-read-property-undefined.png)