How to check If array Contains a string in JavaScript?

 In JavaScript, you can use the includes() method to check if an array includes a particular value or not. Here's an example:

javascript
const arr = ['apple', 'banana', 'orange', 'grape'];

console.log(arr.includes('orange')); // Output: true
console.log(arr.includes('mango')); // Output: false

In this example, the includes() method is used to check if the arr array includes the values 'orange' and 'mango'.

The includes() method takes one argument, which is the value to check for in the array. If the value is found in the array, the method returns true, otherwise it returns false.

In the first console.log() statement, the includes() method returns true because the value 'orange' is present in the arr array. In the second console.log() statement, the includes() method returns false because the value 'mango' is not present in the arr array.

Note that the includes() method is case-sensitive, so if the value you're looking for is in a different case than the array elements, it will not be found.

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