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how to check if array contains an item javascript

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Hakor answered on January 13, 2020 Popularity 10/10 Helpfulness 2/10

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how to check if array contains an item javascript

Comment

let isInArray = arr.includes(valueToFind[, fromIndex])
// arr         - array we're inspecting
// valueToFind - value we're looking for
// fromIndex   - index from which the seach will start (defaults to 0 if left out)
// isInArray   - boolean value which tells us if arr contains valueToFind

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: stackabuse.com

Tags: contains javascript

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Contributed on Aug 15 2022

Hakor

0 Answers Avg Quality 2/10

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how to check if an element is in an array javascript

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const fruits = ["Banana", "Orange", "Apple", "Mango"];
fruits.includes("Mango");

Popularity 10/10 Helpfulness 7/10 Language javascript

Source: Grepper

Tags: element

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Contributed on Jan 28 2022

Zany Zebra

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check if array does not contain value javascript

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var fruits = ["Banana", "Orange", "Apple", "Mango"];

var n = fruits.includes("Mango"); // true

var n = fruits.includes("Django"); // false

Popularity 10/10 Helpfulness 6/10 Language javascript

Source: Grepper

Tags: contain

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Contributed on Jan 09 2021

Vivacious Vendace

0 Answers Avg Quality 2/10

js check if string includes from array

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wordsArray = ['hello', 'to', 'nice', 'day']
yourString = 'Hello. Today is a nice day'.toLowerCase()
result = wordsArray.every(w => yourString.includes(w))
console.log('result:', result)

Popularity 10/10 Helpfulness 5/10 Language javascript

Source: stackoverflow.com

Tags: javascript j

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Contributed on Oct 13 2021

Borma

0 Answers Avg Quality 2/10

js check if string includes from array

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const found = arrayOfStrings.find(v => str.includes(v));

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: stackoverflow.com

Tags: javascript j

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Contributed on Oct 13 2021

Borma

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Check if an array contains a number in javascript

Comment

const ratings = [1,2,3,4,5];

let result = ratings.includes(4); 
console.log(result); // true

result = ratings.includes(6); 
console.log(result); // false

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Source: softhunt.net

Tags: contains contain

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Contributed on Apr 06 2022

Outrageous Ostrich

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js check if array contains value

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var arr = ["name", "id"];
  if (arr.indexOf("name") > -1) console.log('yeah');
  else console.log('nah');

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Source: Grepper

Tags: contains contain

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Contributed on Jun 01 2022

yishay cooper

0 Answers Avg Quality 2/10

How do I check if an array includes a value in JavaScript?

Comment

Modern browsers have Array#includes, which does exactly that and is widely supported by everyone except IE:

console.log(['joe', 'jane', 'mary'].includes('jane')); //true

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: stackoverflow.com

Tags: javascript j

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Contributed on Mar 15 2022

shafeeque

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check if array does not contain string js

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function checkInput(input, words) {
 return words.some(word => input.toLowerCase().includes(word.toLowerCase()));
}

console.log(checkInput('"Definitely," he said in a matter-of-fact tone.', 
["matter", "definitely"]));

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Source: stackoverflow.com

Tags: contain

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Contributed on Jun 07 2020

Vu Nguyen

0 Answers Avg Quality 2/10

javascript check if in array

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var extensions = ["image/jpeg","image/png","image/gif"];          
if(extensions.indexOf("myfiletype") === -1){
	alert("Image must be .png, .jpg or .gif");
}

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Source: Grepper

Tags: javascript j

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Contributed on Jan 13 2020

Friendly Hawk

0 Answers Avg Quality 2/10

Check array contains element

Comment

Check array contains element
String[] fruits = new String[] { "banana", "guava", "apple", "cheeku" };

Arrays.asList(fruits).contains("apple"); // true
Arrays.asList(fruits).indexOf("apple"); // 2

Arrays.asList(fruits).contains("lion"); // false
Arrays.asList(fruits).indexOf("lion"); // -1

Popularity 9/10 Helpfulness 3/10 Language java

Source: howtodoinjava.com

Tags: contains contain

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Contributed on Dec 30 2022

Deepika Sahu

0 Answers Avg Quality 2/10

how to check if array contains an item javascript

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