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1. What is Hoisting in JavaScript? /*Example 01: Variable Hoisting*/ console.log(message); // output : undefined var message = "The variable Has been hoisted"; /*The above code looks like as below to the interpreter,*/ var message; console.log(message); message = "The variable Has been hoisted"; /*Example 02: Function Hoisting*/ function hoist() { a = 20; var b […]

1. What is difference between document.getElementById() and document.querySelector()? document.getElementById(): Returns an element object representing the element whose id property matches the specified string. Since element IDs are required to be unique if specified, they’re a useful way to get access to a specific element quickly.element = document.getElementById(id);document.querySelector(): Returns the first matching Element node within the