Is there a built-in JavaScript isnumeric function similar to jQuery’s isNumeric() to check if a value is a number?

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Yeah, I’ve bumped into issues with loose checks before, especially when values like "123" pass, but we actually wanted real number types. If you need a stricter javascript isnumeric check, go with this instead:”*

function isNumeric(value) {
  return typeof value === "number" && Number.isFinite(value);
}

This ensures you’re only accepting proper numeric types (not numeric-looking strings). It’s perfect for avoiding sneaky type coercion bugs in stricter codebases or APIs.