Java Script Interview Question

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JavaScript const - CrackInterview The const keyword was introduced in ES6 (2015). A const variable must be initialized when they are declared. A const variable cannot be reassigned.

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setTimeout() in JavaScript - CrackInterview The setTimeout function allows us to execute a specific code after a specified delay. It takes two parameters: a callback function and a millisecond delay.

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Reserved Keywords in JavaScript - CrackInterview Reserved keywords are predefined keywords that have special meanings and purposes in the language. These keywords cannot be used as identifiers such as variable

Event loop in JavaScript - CrackInterview The event loop is a constantly running process that monitors both the callback queue and the call stack. If the call stack is not empty, the event loop waits.

https://www.crackinterview.co.in/javascript/experienced/arrow-function

Arrow function in JavaScript - CrackInterview Arrow functions were introduced in ES6. An arrow function must have a return statement. An arrow function is an alternative to a traditional function, but is limited and cannot be used in all situations.

https://www.crackinterview.co.in/javascript/experienced/spread-operator-in-javascript

Spread operator in Javascript - CrackInterview Spread operator (...) allows us to copy an array or object into another array or object. When the spread operator is used as a function parameter, it is known as the rest parameter.

https://www.crackinterview.co.in/javascript/experienced/event-queue-event-loop-and-stack

Event loop in JavaScript - CrackInterview An event loop is a mechanism through which the 'calls waiting for ex*****on' in the callback queue can be put on the call stack. For any event from the callback queue to come to the call stack, the call stack will have to be empty.

Stack and Heap memory in javascript - CrackInterview When we declare a variable in JavaScript, the JavaScript engine allocates memory either in stack or heap, depending on the data type of the variable. Primitive types got memory allocated on the Stack and Reference types got memory allocated on the Heap.

https://www.crackinterview.co.in/javascript/experienced/stack-and-heap-memory

Stack and Heap memory in javascript - CrackInterview When we declare a variable in JavaScript, the JavaScript engine allocates memory either in stack or heap, depending on the data type of the variable. Primitive types got memory allocated on the Stack and Reference types got memory allocated on the Heap.

https://www.crackinterview.co.in/javascript/experienced/event-bubbling-and-event-capturing

Event bubbling and Event capturing in JavaScript - CrackInterview When an element receives an event, that event bubbles up (or you could say is communicated or propagated) to its parent and grandparent elements in the DOM tree until it reaches the root element. This is called event bubbling.

https://www.crackinterview.co.in/javascript/javascript-interview-questions/questions

JavaScript Interview Questions And Answer (2022) - CrackInterview JavaScript interview questions and answers for beginners and professionals provides a list of top mostly asked JavaScript interview questions.