1.It’s a Library not a FrameWork Most of us have a misconception that React is a framework.But reality is React is just a javascript library not a framework. In a framework, some decisions are already made for us , where in React one has to take all decisions by oneself…

Global Block Bindings let and const differ from var in their global scope behaviour. Using var existing global can be overwritten.When var is used it creates a new global variable in the global scope. Example: var RegExp=’hello’; console.log(window.RegExp); //hello In this example, a new global variable RegExp is declared which…

Array Methods 1.Shift() - This method is used to remove the first element from an array.While pop() method removes the last element. Example : let items=[‘first’,’second’,’third’]; items.shift(); console.log(items); //output : items=[‘second’,’third’] 2. Unshift() This method is used to add a new element at the beginning of an array.While …