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Sagar gupta

Full-time Freelancer... • 1y

Most Javascript Questions Asked in Interview | PART 2 1. What is difference between a for loop and for Each loop Ans: A for loop is traditional loop that uses a counter variable to iterate over an array. ForEach loop is a method that iterate over an array and execute a callback function for each element.forEach loop is more concise but it can be slower and less flexible than traditional for loop. 2. How does javascript handle asynchronous programming. Ans: javascript uses callback to handle asynchronous programming , javascript also support promises and async await syntax which provides more concise and readable way of handling asynchronous code. 3.what is callback function. Ans: Callback is a function that is passed as an argument to another function and is executed when a specific operation is completed.

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JavaScript's evolution with ES6 introduces features that enhance development efficiency and readability. Key ES6 features include arrow functions, which provide concise syntax and lexical binding of `this`; classes, simplifying object-oriented progra

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