50 javascript interview questions in java script

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50 javascript interview questions what is javascript? what is the difference between null and undefined? what are the different data types in javascript? what is hoisting in javascript? what is the difference between var, let, and const? what is the use of the "strict" mode in javascript? what is an arrow function in javascript? what is the difference between == and === operators in javascript? what is a closure in javascript? how can you prevent modification of an object property in javascript? what is the difference between synchronous and asynchronous programming in javascript? what is the difference between event bubbling and event capturing in javascript? what is a callback function in javascript? what is the difference between apply, call, and bind methods in javascript? what is a promise in javascript? what is the difference between promise and callback? what is the use of the map function in javascript? what is …

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javascript? what is the difference between innerhtml and textcontent in javascript? what is the difference between event.preventdefault() and event.stoppropagation() in javascript? what is the use of the this keyword in javascript? what is the use of the new keyword in javascript? what is the difference between a function declaration and a function expression in javascript? what is the difference between var and function declarations hoisting in javascript? what is the use of the object.keys() method in javascript? what is the use of the object.values() method in javascript? what is the use of the object.freeze() method in javascript? what is the use of the object.assign() method in javascript? what is the difference between object.seal() and object.freeze() methods in javascript? what is the use of the array.from() method in javascript? what is the use of the array.isarray() method in javascript? what is the use of the array.prototype.sort() method in javascript?

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50 javascript interview questions what is javascript? what is the difference between null and undefined? what are the different data types in javascript? what is hoisting in javascript? what is the difference between var, let, and const? what is the use of the "strict" mode in javascript? what is an arrow function in javascript? what is the difference between == and === operators in javascript? what is a closure in javascript? how can you prevent modification of an object property in javascript? what is the difference between synchronous and asynchronous programming in javascript? what is the difference between event bubbling and event capturing in javascript? what is a callback function in javascript? what is the difference between apply, call, and …

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