![]() ![]() There’s also an optional second argument called fromIndex, which is the index at which to start searching in the array. The method returns true if the searchElement is found and false if it’s not found. This is the value that the method searches for in the array. The first argument of the includes() method is the searchElement. Using the includes() method is the most readable method to check if an array contains a primitive value: console.log(.includes("Matilda")) // true There are seven primitive data types: string, number, bigint, boolean, undefined, symbol, and null. Checking if an Array Contains a Primitive ValueĪ primitive value is a value that’s not an object. If you are checking if an array contains a primitive value, such as a string or number, the solution is more straightforward than if you are checking for a value that’s an object. There are two JavaScript array methods that are commonly used to find a value in an array: includes() and indexOf(). You want to check if an array contains a particular value. ![]()
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