How Can I Find the Index of an Object in a JavaScript Array Based on a Property Value?

Finding the Index of an Object Array Element

When working with arrays of objects, finding the index of a specific element based on a given condition can be crucial. Here's a simple and direct way to accomplish this:

The built-in map method in JavaScript offers a convenient way to extract specific properties from an array of objects. By combining map with indexOf, we can efficiently search for the index of an element meeting a particular condition.

Example:

Consider the following input:

var hello = { hello: 'world', foo: 'bar'};
var qaz = { hello: 'stevie', foo: 'baz'}

var myArray = [];
myArray.push(hello, qaz);

To find the index of the element whose hello property equals 'stevie', we can use the following code:

const pos = myArray.map(e => e.hello).indexOf('stevie');

This will return the index of the element in myArray that matches the given condition. In this case, the result would be 1.

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