What is React? React is a JavaScript library created by Facebook. React is a tool for building UI components. How does React Work? React creates a VIRTUAL DOM in memory. Instead of manipulating the browser’s DOM directly, React creates a virtual DOM in memory, where it does all the necessary…

JavaScript Errors — Throw and Try to Catch The try statement lets you test a block of code for errors. The catch statement lets you handle the error. The throw statement lets you create custom errors. The finally statement lets you execute code, after try and catch, regardless of the result. Errors Will Happen! When executing JavaScript code…

JavaScript arrays are used to store multiple values in a single variable. Example : var name= [“Irfan”, “Ullah”, “Munna”]; What is an Array? An array is a special variable, which can hold more than one value at a time. If you have a list of items (a list of people…