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25 maj 2016 · You can use some() function: to check if a string contains any element of an array. e.g. var fruitsArr = ['banana', 'monkey banana', 'apple', 'kiwi', 'orange']; var myString = "I have an apple and a watermelon."; var stringIncludesFruit = fruitsArr.some(fruit => myString.includes(fruit));
7 kwi 2011 · This way you can take a predefined array and check if it contains a string: var parameters = ['a','b'] parameters.includes('a') // true
The includes () method returns true if an array contains a specified value. The includes () method returns false if the value is not found. The includes () method is case sensitive.
12 lip 2024 · Checking if an array of strings contains a substring in JavaScript involves iterating through each string in the array and examining if the substring exists within any of them. This process ensures efficient detection of the substring’s presence within the array.
28 cze 2022 · You can use the includes() method in JavaScript to check if an item exists in an array. You can also use it to check if a substring exists within a string. It returns true if the item is found in the array/string and false if the item doesn't exist.
8 lip 2019 · There are two common ways to check if a JavaScript array contains a value: `includes()` and `indexOf()`. This tutorial shows you how to use both, and why you would use one versus the other.
For primitive values, use the array.includes() method to check if an array contains a value. For objects, use the isEqual() helper function to compare objects and array.some() method to check if the array contains the object.
