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Number.parseInt() - JavaScript | MDN
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Number.parseInt()

Baseline Widely available

This feature is well established and works across many devices and browser versions. Its been available across browsers since 2015 9.

Number.parseInt() .

In this article

function roughScale(x, base) {
  const parsed = Number.parseInt(x, base);
  if (Number.isNaN(parsed)) {
    return 0;
  }
  return parsed * 100;
}

console.log(roughScale(" 0xF", 16));
// Expected output: 1500

console.log(roughScale("321", 2));
// Expected output: 0

js
Number.parseInt(string)
Number.parseInt(string, radix)

string

, . .

radix Optional

2 36 , string ( ) .

radix 0 10 . , 0x 0X 16 .

string .

radix 2 36 , NaN .

Number.parseInt vs. parseInt

parseInt() .

js
Number.parseInt === parseInt; // true

. parseInt() .

Specification
ECMAScript 2027 LanguageSpecification
# sec-number.parseint

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  2. Number
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