Find the Array Index with a Value in JavaScript - GeeksforGeeks
![](https://media.geeksforgeeks.org/wp-content/uploads/20231130121654/Find-the-array-index-with-a-value-in-JavaScript.png)
A Computer Science portal for geeks. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions.
A computer science portal for geeks. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions.
We have a given value and we need to find out whether the given is present in the array or not, If it is present then we have to print the index number of that existing value, and if it is not present then we will print -1. Example 1
![](https://global.discourse-cdn.com/freecodecamp/original/4X/d/8/7/d875d23cb8f56c7e9fadeb1538f9d4ca27fa55bd.png)
Real job interview question, find all occurances of a string
![](https://miro.medium.com/v2/resize:fit:800/0*OWWv4gUnex1Zk2sn.png)
Sequential Search. Say for example you have an unsorted…
![](https://global.discourse-cdn.com/business6/uploads/dataquest1/original/2X/7/770c86f3063ad7e553b3fe795d3e4c834c866440.png)
Why 'Mode()[0]', Not Just 'Mode()? - DQ Courses - Dataquest Community
![](https://i.ytimg.com/vi/9nX2mIFJMpE/maxresdefault.jpg)
Find the first repeating element in an array of integers
![](https://ioflood.com/blog/wp-content/uploads/2023/09/Indexing-in-Python-numbered-lists-index-markers-code-snippets-Python-logo.jpg)
index() Python Function Guide (With Examples)
![](https://www.w3resource.com/w3r_images/javascript-array-image-exercise-26.png)
JavaScript array: Find a pair of elements from an specified array
Plucking Flowers GeeksforGeeks Problem, by Samarth Sewlani
![](https://ioflood.com/blog/wp-content/uploads/2023/12/Bash-script-determining-length-of-array-highlighted-with-array-elements-and-length-measurement-symbols.jpg)
Finding Length of Array in Bash: Linux Shell Guide
![](https://prepbytes-misc-images.s3.ap-south-1.amazonaws.com/assets/1674106318151-Find%20Missing%20Number%20In%20Array.jpg)
Find Missing Number In Array
![](https://i.redd.it/ozrbm906ha971.png)
I love Pop!_OS and changing themes a lot : r/pop_os
![](https://ioflood.com/blog/wp-content/uploads/2023/08/Artistic-representation-of-Get-Length-of-Array-in-Python-focusing-on-methods-to-determine-array-length.jpg)
Get Length of Array in Python: Guide and Examples
![](https://afteracademy.com/images/find-the-minimum-and-maxmium-value-banner2.png)
Find minimum and maximum value in an array - Interview Problem
![](https://i.ytimg.com/vi/eXFItikqw8c/hqdefault.jpg)
Arrays in Data Structure: A Guide With Examples [Updated]
![](https://i.stack.imgur.com/tBTQy.png)
javascript - Getting the index or the value of a single object