{"id":201747,"date":"2025-05-29T10:05:45","date_gmt":"2025-05-29T10:05:45","guid":{"rendered":"https:\/\/namso-gen.co\/blog\/how-to-get-key-from-value-in-javascript\/"},"modified":"2025-05-29T10:05:45","modified_gmt":"2025-05-29T10:05:45","slug":"how-to-get-key-from-value-in-javascript","status":"publish","type":"post","link":"https:\/\/namso-gen.co\/blog\/how-to-get-key-from-value-in-javascript\/","title":{"rendered":"How to get key from value in JavaScript?"},"content":{"rendered":"

Getting the key from a value in JavaScript can be a common challenge when working with objects. Fortunately, there are a few approaches you can use to accomplish this task.<\/p>\n

One of the simplest ways to get the key from a value in JavaScript is by using a for…in loop. This loop allows you to iterate over all the keys in the object and check if the corresponding value matches the one you are looking for. Let’s take a look at how you can achieve this:<\/p>\n

“`javascript
\nfunction getKeyByValue(object, value) {
\n for (let key in object) {
\n if (object[key] === value) {
\n return key;
\n }
\n }
\n}
\n“`<\/p>\n

How to get key from value in JavaScript?<\/strong><\/p>\n

The above function takes an object and a value as arguments and loops through each key-value pair in the object. If the value matches the desired value, it returns the corresponding key. Here’s an example of how you can use this function:<\/p>\n

“`javascript
\nconst myObject = {
\n key1: ‘value1’,
\n key2: ‘value2’,
\n key3: ‘value3’
\n};<\/p>\n

const key = getKeyByValue(myObject, ‘value2’);
\nconsole.log(key); \/\/ Output: key2
\n“`<\/p>\n

Now that we have seen how to get the key from a value in JavaScript using a for…in loop, let’s address some related FAQs to provide a more comprehensive understanding of this topic.<\/p>\n

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Table of Contents<\/p>\nToggle<\/span><\/path><\/svg><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n