Let's dive into the code and see how to use the includes() method in JavaScript. The includes() method is case-sensitive, so searching for an value with a different capitalization than it appears in the array will return false.You can pass in a second argument as the starting index to search for the value within a specific array range.It returns a boolean value of true if the value is in the array and false if it is not.The includes() method is used to check if a value is in an array. The includes() method determines whether one string may be found within another string, returning true or false as appropriate.If the value is not in the array, the includes() method will return false.įor those that don't want to deep-dive into how to use the includes() method, here is the TLDR 😉 If the value is in the array, the includes() method will return a boolean value of true. In Javascript, to make a new array based on some condition, its better to use array.filter method.
To use the includes() method, you call it on the array you want to search and pass in the value you are looking for as an argument. It is a simple and efficient way to validate if a value is in an array and can be particularly useful when working with large or complex data sets. The includes() method helps check whether an array contains a specific value.
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