Array filter Method in JavaScript | JavaScript Array Methods | Beginners tutorial

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  • เผยแพร่เมื่อ 2 ต.ค. 2024
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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 filter method.
    The filter() method creates a new array filled with elements that pass a test provided by a function.
    The filter() method does not execute the function for empty elements.
    The filter() method does not change the original array.
    🟢🟠 The Array.filter().
    🔷 Syntax :
    // Callback function
    filter(callbackFn)
    filter(callbackFn, thisArg)
    // Inline callback function
    filter(function(element) { /* … */ })
    filter(function(element, index) { /* … */ })
    filter(function(element, index, array){ /* … */ })
    filter(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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