Baseline Widely available
Math.log10()
éçã¡ã½ããã¯ãæ°å¤ã® 10 ãåºã¨ãã対æ°ãè¿ãã¾ããããªãã¡æ¬¡ã®å¤ã§ãã
console.log(Math.log10(100000));
// Expected output: 5
console.log(Math.log10(2));
// Expected output: 0.3010299956639812
console.log(Math.log10(1));
// Expected output: 0
console.log(Math.log10(0));
// Expected output: -Infinity
æ§æ 弿°
x
0 以ä¸ã®æ°å¤ã§ãã
x
ã® 10 ãåºã¨ãã対æ°ã§ãã x < 0
ã§ãã£ãå ´åã NaN
ãè¿ãã¾ãã
log10()
㯠Math
ã®éçã¡ã½ããã§ãããããçæãã Math
ãªãã¸ã§ã¯ãã®ã¡ã½ããã¨ãã¦ã§ã¯ãªãã常㫠Math.log10()
ã¨ãã¦ä½¿ç¨ããããã«ãã¦ãã ããï¼Math
ã¯ã³ã³ã¹ãã©ã¯ã¿ã¼ã§ã¯ããã¾ããï¼ã
ãã®é¢æ°ã¯ Math.log(x) / Math.log(10)
ã¨åçã§ãã log10(e)
ã«ã¯å®æ° Math.LOG10E
ã使ç¨ãã¦ãã ãã (ãã㯠1 / Math.LN10
ã§ãã)
Math.log10(-2); // NaN
Math.log10(-0); // -Infinity
Math.log10(0); // -Infinity
Math.log10(1); // 0
Math.log10(2); // 0.3010299956639812
Math.log10(100000); // 5
Math.log10(Infinity); // Infinity
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