javascript random string from array - Brave Search

Select a random string from an array [duplicate]

stackoverflow.com › questions › 7350363 › select-a-random-string-from-an-array

var textArray = [
    'song1.ogg',
    'song2.ogg'
];
var randomNumber = Math.floor(Math.random()*textArray.length);

audioElement.setAttribute('src', textArray[randomNumber]);

Answer from Gideon on Stack Overflow

stackoverflow.com › questions › 7350363 › select-a-random-string-from-an-array

javascript - Select a random string from an array - Stack Overflow

var textArray = [
    'song1.ogg',
    'song2.ogg'
];
var randomNumber = Math.floor(Math.random()*textArray.length);

audioElement.setAttribute('src', textArray[randomNumber]);

var randomIndex = Math.floor(Math.random() * textArray.length); 
var randomElement = textArray[randomIndex];

reddit.com › r/learnjavascript › random string

r/learnjavascript on Reddit: Random String

December 21, 2021 -

I am new to programming because of my school but how can I make the program choose a random String of the available Strings i have given to him. How can i lead this whole process from beginning to the end I am actually confused because I tried something with array and java.util.Random, but it seems to only do the work with integers in "x"
Thank youu

Add the strings to an array const words = ['jon','jack','jill'] Math.random() generates a random number between 0-1 in Javascript. Math.floor() rounds a number down to an interger. let randomIndex = Math.floor(Math.random()*words.length + 1) Then access the string from the array, based on the random index. console.log(words[randomIndex])

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forum.freecodecamp.org › javascript

Is it possible to get a random letter from a string element inside an array? - JavaScript - The freeCodeCamp Forum

October 3, 2019 - Say you have the following array: let characters = ['ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz', '1234567890', '!@#$%^&*()']; Would it be possible to get a random string, from any index? Say I wanted at…

sentry.io › sentry answers › javascript › generate random string/characters in javascript

Generate random string/characters in JavaScript | Sentry

The crypto.getRandomValues method populates the Uint8Array array with random numbers with a value between 0 and 255. We then loop through this array to create a random string.

shecodes.io › athena › 3492-how-to-get-two-random-strings-from-an-array-in-javascript

[JavaScript] - How to get two random strings from an array in JavaScript

Learn how to select two random strings from an array in Javascript and get an understanding of the logic behind it.

programiz.com › javascript › examples › get-random-item

JavaScript Program to Get Random Item From an Array

In the above program, a random item from an array is accessed. A random number between 0 to array.length is generated using the Math.random() method. The Math.floor() returns the nearest integer value generated by Math.random(). This random index is then used to access a random array element.

gist.github.com › yairEO › f75de80b147c81fd688ffd323f8ad6a2

Generate javascript array with random strings · GitHub

Array.apply(null, Array(10)).map(function() { return Array.apply(null, Array(~~(Math.random() * 10 + 3))).map(function() { return String.fromCharCode(Math.random() * (123 - 97) + 97); }).join('') });

gist.github.com › 6174 › 6062387

Generate a random string in JavaScript In a short and fast way! · GitHub

const rnd = (() => { const gen = (min, max) => max++ && [...Array(max-min)].map((s, i) => String.fromCharCode(min+i)); const sets = { num: gen(48,57), alphaLower: gen(97,122), alphaUpper: gen(65,90), special: [...`~!@#$%^&*()_+-=[]\{}|;:'",./<>?`] }; function* iter(len, set) { if (set.length < 1) set = Object.values(sets).flat(); for (let i = 0; i < len; i++) yield set[Math.random() * set.length|0] } return Object.assign(((len, ...set) => [...iter(len, set.flat())].join('')), sets); })(); console.log('OUTPUT: ', rnd(20)); // Use all sets // OUTPUT: Kr8K1,f5hQa;YJC~7K9z console.log('OUTPUT: ', rnd(20, rnd.alphaLower)); // OUTPUT: cpjbkwvslxsofzvkekcw console.log('OUTPUT: ', rnd(20, rnd.alphaUpper rnd.special)); // OUTPUT: S]|-X]=N}TZC,GE;=,.D

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delftstack.com › home › howto › javascript › javascript random string

How to Generate Random String in JavaScript | Delft Stack

March 11, 2025 - We then loop through the array, using the modulus operator to select characters from our predefined character set. This approach is ideal for generating secure tokens or passwords, as it provides a level of randomness that is significantly stronger than the previous methods. Using cryptographic functions is essential when security is a priority. In this article, we explored various methods to generate random strings in JavaScript, including using Math.random(), custom character sets, and the more secure Crypto.getRandomValues().

stackoverflow.com › questions › 24569743 › get-random-string-from-array-list

javascript - Get random string from array list - Stack Overflow

this fiddle works.

var myArray = ['January', 'February', 'March'];
var rand = Math.floor(Math.random() * myArray.length);

function showquote(){
    document.getElementById('quote').innerHTML = myArray[rand];
}
showquote();

the problem is with this line

var rand = myArray[Math.floor(Math.random() * myArray.length)]; // dereferenced myArray[] twice here

The problem is that rand' is already the value from the array (e.g. "January"), var rand = myArray[Math.floor(Math.random() * myArray.length)];

so you cannot get value from the array again using myArray['January'].

You should change your Js function as below

function showquote(){
    document.getElementById('quote').innerHTML = rand;
}

Or change your variable

var rand = Math.floor(Math.random() * myArray.length);

w3resource.com › javascript-exercises › javascript-array-exercise-35.php

JavaScript array: Get a random item from an array - w3resource

// Arrow function to return a random item from an array const random_item = items => items[Math.floor(Math.random() * items.length)]; // Declare and initialize an array of items const items = [254, 45, 212, 365, 2543]; // Output the result of ...

stackoverflow.com › questions › 4550505 › getting-a-random-value-from-a-javascript-array

Getting a random value from a JavaScript array - Stack Overflow

It's a simple one-liner:

const randomElement = array[Math.floor(Math.random() * array.length)];

For example:

const months = ["January", "February", "March", "April", "May", "June", "July"];

const random = Math.floor(Math.random() * months.length);
console.log(random, months[random]);

If you've already got underscore or lodash included in your project you can use _.sample.

// will return one item randomly from the array
_.sample(['January', 'February', 'March']);

If you need to get more than one item randomly, you can pass that as a second argument in underscore:

// will return two items randomly from the array using underscore
_.sample(['January', 'February', 'March'], 2);

or use the _.sampleSize method in lodash:

// will return two items randomly from the array using lodash
_.sampleSize(['January', 'February', 'March'], 2);

geeksforgeeks.org › javascript › how-to-select-a-random-element-from-array-in-javascript

JavaScript - Select a Random Element from JS Array - GeeksforGeeks

Selecting a random element from array in JavaScript is done by accessing an element using random index from the array.

Published July 12, 2025

geeksforgeeks.org › how-to-select-a-random-element-from-array-in-javascript

JavaScript – Select a Random Element from JS Array | GeeksforGeeks

Selecting a random element from array in JavaScript is done by accessing an element using random index from the array.

Published January 9, 2025

programiz.com › javascript › examples › generate-random-strings

JavaScript Program to Generate Random String

To understand this example, you should have the knowledge of the following JavaScript programming topics: ... // program to generate random strings // declare all characters const characters ='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'; function generateString(length) { let result = ' '; const charactersLength = characters.length; for ( let i = 0; i < length; i++ ) { result += characters.charAt(Math.floor(Math.random() * charactersLength)); } return result; } console.log(generateString(5));

css-tricks.com › snippets › javascript › select-random-item-array

Select Random Item from an Array | CSS-Tricks

December 23, 2016 - var myArray = [ "Apples", "Bananas", "Pears" ]; var randomItem = myArray[Math.floor(Math.random()*myArray.length)];

tutorialspoint.com › forming-and-matching-strings-of-an-array-based-on-a-random-string-in-javascript

Forming and matching strings of an array based on a random string in JavaScript

We are required to write a JavaScript function that takes in such an array and string as the two argument. Then the function, for each element of the array should check whether that particular element can be formed completely from the string supplied as second argument.

docs.vultr.com › javascript › examples › get-random-item-from-an-array

JavaScript Program to Get Random Item From an Array | Vultr Docs

December 18, 2024 - The succinct ES6 version of getRandomItem easily handles arrays containing various data types, fetching a random element each time. Utilizing JavaScript to select a random item from an array is a useful skill that can be applied in numerous programming scenarios, from game development to data ...

kirupa.com › html5 › picking_random_item_from_array.htm

Picking a Random Item from an Array | kirupa.com

In this article, we will learn how to write this JavaScript ourselves. We will learn how to write some code to randomly pick an item from array filled with items!

slingacademy.com › article › ways-to-generate-random-strings-in-javascript

4 Ways to Generate Random Strings in JavaScript - Sling Academy

const generateRandomString = (length) => { const characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'; const charactersLength = characters.length; let result = ''; // Create an array of 32-bit unsigned integers const randomValues = new Uint32Array(length); // Generate ...