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Is 1 == true in JS?

Dan Hayhurst | October 31, 2022

JavaScript is an influential scripting language and one of the most commonly used programming languages. It is employed to develop webpages, mobile applications, and server-side applications, and it is a critical element of the World Wide Web. Therefore, it is essential to comprehend the nuances of the language to generate effective code.

A frequent question asked by developers is whether the number one (1) is equal to the boolean value of true in JavaScript. The answer to this query is not direct and relies on the context of the comparison.

When comparing numbers and booleans in JavaScript explicitly, the solution is simple. The number one (1) is not equal to the boolean value of true. This is since JavaScript views numbers and booleans as two distinct data types. As a result, a comparison between the two will always return false. For example, if we were to compare the number one (1) to the boolean value of true, the comparison operator would return false.

However, when it comes to implicitly comparing numbers and booleans in JavaScript, the answer is more complicated. This is due to the fact that JavaScript will try to convert the data type of one value to match the other when they are compared. For example, if we compare the number one (1) to the boolean value of true, JavaScript will convert the boolean value of true to a number (1) and the comparison will return true.

In conclusion, the answer to the query “is 1 == true in JS?” relies on the context of the comparison. If the comparison is explicit, the answer is false. However, if the comparison is implicit, JavaScript will try to convert the data type of one value to match the other and the comparison will return true.

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