Baseline Widely available
ã¤ã³ã¯ãªã¡ã³ãæ¼ç®å (++
) ã¯ããªãã©ã³ããã¤ã³ã¯ãªã¡ã³ã (1 ãå ç®) ãã¦å¤ãè¿ãã¾ãã
let x = 3;
const y = x++;
console.log(`x:${x}, y:${y}`);
// Expected output: "x:4, y:3"
let a = 3;
const b = ++a;
console.log(`a:${a}, b:${b}`);
// Expected output: "a:4, b:4"
æ§æ 解説
ãªãã©ã³ãã«å¾ç½®ã§æ¼ç®åãä»ãã㨠(ä¾ãã°ã x++
) ãã¤ã³ã¯ãªã¡ã³ãæ¼ç®åã¯ã¤ã³ã¯ãªã¡ã³ããã¾ãããã¤ã³ã¯ãªã¡ã³ãåã®å¤ãè¿ãã¾ãã
ãªãã©ã³ãã«åç½®ã§æ¼ç®åãä»ãã㨠(ä¾ãã°ã ++x
) ãã¤ã³ã¯ãªã¡ã³ãæ¼ç®åã¯ã¤ã³ã¯ãªã¡ã³ãããã¤ã³ã¯ãªã¡ã³ãå¾ã®å¤ãè¿ãã¾ãã
let x = 3;
y = x++;
// y = 3
// x = 4
åç½®ã¤ã³ã¯ãªã¡ã³ã
let a = 2;
b = ++a;
// a = 3
// b = 3
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