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Javascript - Testing a Character against subset without RegEx

Is there a way to test for occurrence of specific characters in a more elegant way using Javascript syntax but without RegEx? Trying to avoid repetitive 'or' conditions if possible.

if (target == "+" || target == "-" || target == "*" || target == "/") {
    alert("hit a function");
}

Thanks.

about 4 years ago · Santiago Gelvez

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Answer 1 · 2022-07-01T00:08:03.092Z

There are a couple of ways of doing this:

Use an array and includes: ['+', '-', '*', '/'].includes(target)
Use an object with keys your values and check for that

 const values = { '*': true, '-': true, '+': true, '/': true}
 if (values[target] === true)

But writing a long boolean condition could also work. Just wrap that in a function so you don't have to c/p code around

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Javascript - Testing a Character against subset without RegEx

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Encuentra empleos remotos

Andres GPT