How best to search a Javascript array for partial matches? - Stack Overflow

I'm very new to Javascript and I expect there is a simple answer, but how can you search a Javascript array for a partial match?

So if I have an array such as:

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

I know I can easily check if the array contains something using:

fruits.includes("Mango");

But what if I want to know whether an array contains a value that partially matches a certain sequence of characters?

For example, if I want to know if the above array includes an entry that has the string "Man" in it.

I'm very new to Javascript and I expect there is a simple answer, but how can you search a Javascript array for a partial match?

So if I have an array such as:

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

I know I can easily check if the array contains something using:

fruits.includes("Mango");

But what if I want to know whether an array contains a value that partially matches a certain sequence of characters?

For example, if I want to know if the above array includes an entry that has the string "Man" in it.

• javascript

Share Improve this question Follow asked Jan 13, 2022 at 10:41 DamoDamo 7377 bronze badges

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3 Answers 3

Sorted by: Reset to default 7

You can use filter if you want to find multiple objects might match, or find if you only want one, or if you just want to know if it exists at all use some

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

const fruitsWithMan = fruits.filter(x => x.includes("Man"))
console.log(fruitsWithMan); // returns array

const oneFruitWithMan = fruits.find(x => x.includes("Man"))
console.log(oneFruitWithMan); // returns single item

const hasFruitWithMan = fruits.some(x => x.includes("Man"));
console.log(hasFruitWithMan); // return boolean

You could filter the array this way :

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

console.log(fruits.filter(fruit => fruit.includes("Man")));

["Banana", "Orange", "Apple", "Mango"].some(fruit => fruit.includes("Man"));