Ollie  Dietrich

Ollie Dietrich

1625988600

JavaScript Array Methods #4: Array .find() Method

The Javascript Array .find() method is used to get the value of the first element in the array that satisfies the provided condition in a callback function. It checks all the elements of the array and whichever first element satisfies the condition is going to print.

The function and syntax of find() are very much like the Array .filter() method, except it, only returns a single element. Another difference is when nothing is found, this method returns a value of undefined.

Syntax:
array.find(function(currentValue, index, arr), thisValue)

▶ #1: Array .map() Method | JavaScript Array Methods
https://www.youtube.com/watch?v=oystIFwyt4o

▶ #2: Array .forEach() Method | JavaScript Array Methods
https://www.youtube.com/watch?v=e2qbolkHKt4

▶ #3: Array .filter() Method | JavaScript Array Methods
https://www.youtube.com/watch?v=nN1k3HeG2oc

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#javascript #array #find

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 JavaScript Array Methods #4: Array .find() Method
Ollie  Dietrich

Ollie Dietrich

1625988600

JavaScript Array Methods #4: Array .find() Method

The Javascript Array .find() method is used to get the value of the first element in the array that satisfies the provided condition in a callback function. It checks all the elements of the array and whichever first element satisfies the condition is going to print.

The function and syntax of find() are very much like the Array .filter() method, except it, only returns a single element. Another difference is when nothing is found, this method returns a value of undefined.

Syntax:
array.find(function(currentValue, index, arr), thisValue)

▶ #1: Array .map() Method | JavaScript Array Methods
https://www.youtube.com/watch?v=oystIFwyt4o

▶ #2: Array .forEach() Method | JavaScript Array Methods
https://www.youtube.com/watch?v=e2qbolkHKt4

▶ #3: Array .filter() Method | JavaScript Array Methods
https://www.youtube.com/watch?v=nN1k3HeG2oc

▶ JavaScript Array Methods
https://www.youtube.com/playlist?list=PL1TrjkMQ8UbU_im9BEBp1ap921-MFhR2H

▶ Vue 2 Basics Beginner Tutorial
https://www.youtube.com/playlist?list=PL1TrjkMQ8UbUb6enU-ESsbngYBLbE_sG4

▶ Vue.js 2 Components, Beginners tutorial
https://www.youtube.com/playlist?list=PL1TrjkMQ8UbVu4dvX2gtyZQ0FxAsA48jB

▶ Vuex tutorial (Vue.js state management)
https://www.youtube.com/playlist?list=PL1TrjkMQ8UbVSDkDaLkjpeNGkblNU8rpW

▶ Vue.js 3 Tutorial
https://www.youtube.com/playlist?list=PL1TrjkMQ8UbWg8f8EpkpZntxdQldkBipE

Support my work:

  1. On BuyMeACoffee: https://www.buymeacoffee.com/qirolab
  2. On Patreon: https://www.patreon.com/qirolab

𝐃𝐢𝐠𝐢𝐭𝐚𝐥𝐎𝐜𝐞𝐚𝐧 𝐑𝐞𝐟𝐞𝐫𝐫𝐚𝐥
https://m.do.co/c/e740238537d0

Also, follow us on:
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#javascript #array #find

Coy  Roberts

Coy Roberts

1600481520

Javascript array find: How to Find Element in Javascript

Javascript array find() is an inbuilt js function that returns the value of the first item in the Array that satisfies a provided testing function. Otherwise,  undefined will be returned. The array find() method returns the value of the first element in an array that passes a test of provided function.

If an Array find() method finds an item where the function returns a true value. Javascript find() returns the value of that array item immediately and does not check the remaining values of that Array.

Javascript array find

Javascript Array.find() is the inbuilt function that is used to get a value of the first item in the Array that meets the provided condition. If you need an index of the found item in the Array, use the  findIndex(). If you need to find an index of the value, use Array  .prototype.indexOf(). If you need to find if the value exists in an array, use Array  .prototype.includes().

It checks all the items of the Array, and whichever the first item meets, the condition is going to print. If more than one item meets the condition, then the first item satisfying the requirement is returned. Suppose that you want to find the first odd number in the Array. The argument function checks whether an argument passed to it is an odd number or not.

Javascript find() function calls an argument function for every item of the Array.  The first odd number for which argument function returns true is reported by the find() function as the answer.

#javascript #javascript find #array.find

Terry  Tremblay

Terry Tremblay

1602154740

Fill and Filter in Array in JavaScript

By the word Array methods, I mean the inbuilt array functions, which might be helpful for us in so many ways. So why not just explore and make use of them, to boost our productivity.

Let’s see them together one by one with some amazing examples.

Array.fill():

The _fill()_ method changes all elements in an array to a static value, from a start index (default _0_) to an end index (default _array.length_). It returns the modified array.

In simple words, it’s gonna fill the elements of the array with whatever sets of params, you pass in it. Mostly we pass three params, each param stands with some meaning. The first param value: what value you want to fill, second value: start range of index(inclusive), and third value: end range of index(exclusive). Imagine you are going to apply this method on some date, so that how its gonna look like eg: array.fill(‘Some date’, start date, end date).

NOTE: Start range is inclusive and end range is exclusive.

Let’s understand this in the below example-

//declare array
var testArray = [2,4,6,8,10,12,14];

console.log(testArray.fill("A"));

When you run this code, you gonna see all the elements of testArray will be replaced by 'A' like [“A”,"A","A","A","A","A","A"].

#javascript-tips #array-methods #javascript-development #javascript #arrays

Lowa Alice

Lowa Alice

1624388400

JavaScript Arrays Tutorial. DO NOT MISS!!!

Learn JavaScript Arrays

📺 The video in this post was made by Programming with Mosh
The origin of the article: https://www.youtube.com/watch?v=oigfaZ5ApsM&list=PLTjRvDozrdlxEIuOBZkMAK5uiqp8rHUax&index=4
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#arrays #javascript #javascript arrays #javascript arrays tutorial

Tanya  Shields

Tanya Shields

1594911120

Learn Arrays And Array Methods in JavaScript

In JavaScript, an array is a data structure that contains list of elements which store multiple values in a single variable. The strength of JavaScript arrays lies in the array methods. Array methods are functions built-in to JavaScript that we can apply to our arrays — Each method has a unique function that performs a change or calculation to our array and saves us from writing common functions from scratch.
In this video we are going to learn arrays and array methods like sort(), reverse(), join(), split(), pop(), push(), shift(), unshift(), toString(), delete array, etc…

#javascript #arrays #array methods #programming