Math.abs()
Baseline
Widely available
This feature is well established and works across many devices and browser versions. Itâs been available across browsers since 2015å¹´7æ.
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function difference(a, b) {
return Math.abs(a - b);
}
console.log(difference(3, 5));
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console.log(difference(5, 3));
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console.log(difference(1.23456, 7.89012));
// é æ輸åºï¼6.6555599999999995
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Math.abs(-Infinity); // Infinity
Math.abs(-1); // 1
Math.abs(-0); // 0
Math.abs(0); // 0
Math.abs(1); // 1
Math.abs(Infinity); // Infinity
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Math.abs() æå°åæ¸å¼·å¶è½åçºæ¸åãç¡æ³è½åçå¼å°è®çº NaNï¼å æ¤ Math.abs() ä¹æåå³ NaNã
js
Math.abs("-1"); // 1
Math.abs(-2); // 2
Math.abs(null); // 0
Math.abs(""); // 0
Math.abs([]); // 0
Math.abs([2]); // 2
Math.abs([1, 2]); // NaN
Math.abs({}); // NaN
Math.abs("string"); // NaN
Math.abs(); // NaN
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| Specification |
|---|
| ECMAScript® 2027 Language Specification # sec-math.abs |