Array map Method in JavaScript | JavaScript Array Methods | Beginners tutorial
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🧡 Hello All JavaScript Lovers Outhere!
Today you're going to learn about the Array Object In JavaScript.
This tutorial is a series of videos, in each video we will discuss a method (or more) of the Array Object in JavaScript.
In today's video, you're going to learn about the map method.
map() creates a new array from calling a function for every array element.
map() calls a function once for each element in an array.
map() does not execute the function for empty elements.
map() does not change the original array.
🟢🟠 The Array.map().
🔷 Syntax :
// Callback function
map(callbackFn)
map(callbackFn, thisArg)
// Inline callback function
map(function(element) { /* … */ })
map(function(element, index) { /* … */ })
map(function(element, index, array){ /* … */ })
map(function(element, index, array) { /* … */ }, thisArg)
🔹callbackFn : Function to execute on each element.
The function is called with the following arguments:
🔹element : The current element being processed in the array.
🔹index : The index of element in the array.
🔹array : The array forEach() was called upon.
🔹thisArg (Optional) : Value to use as this when executing callbackFn.
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Watch video Array map Method in JavaScript | JavaScript Array Methods | Beginners tutorial online without registration, duration hours minute second in high quality. This video was added by user Code Explained 30 August 2022, don't forget to share it with your friends and acquaintances, it has been viewed on our site 1,392 once and liked it 66 people.