![]() ![]() So only if one, and only one of the conditions is true. It's asking now if the string contains hello, hi or howdy. includes method, for example: var value str.includes ('hello', 'hi', 'howdy') Imagine the comma states 'or'. Please show your love and support by sharing this post. Just wondering, is there a way to add multiple conditions to a. Similarly, in the following cases, () does a " strict equality comparison":Ĭonsole.log(.includes(2)) // trueĬonsole.log(.includes(4)) // falseĬonsole.log(.includes(+0)) // trueĬonsole.log(.includes(-0)) // trueĬonsole.log(.includes('foo')) // trueĬonsole.log(.includes('Foo')) // falseĬonsole.log(.includes('fo')) // false This is the same as it would happen in a strict equals ( =) comparison: This means, for example, that a numeric string won't equal its integer counterpart: Other than that one exception, Same-Value-Zero algorithm and strict equality actually yield the same result. For example:Ĭonsole.log(.includes(NaN)) // true By combining these two methods, we can easily find elements that are present in array A but not in array B. ![]() However, in a stricter sense, the " strict equality comparison" differs from the ( Same-Value-Zero) algorithm () method uses under the hood in terms of NaN equality. Using the filter () and includes () methods The filter () method is used to filter out elements from an array based on a condition while the includes () method is used to check whether an element exists in an array or not. You could technically say that the JavaScript () method does a strict equality comparison of values.
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