ES6
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[JavaScript ES6/ ecmascript 2015] ๋ฌธ๋ฒ ์ ๋ฆฌJavaScript 2020. 6. 19. 15:51
โ ES2015+ โ const, let const์ let์ ๋ธ๋ก ์ค์ฝํ์ด๋ค. if(true){ var x = 3; } console.log(x); // 3 if(true){ const y = 3; } console.log(y) // Uncaught ReferenceError : y is not defined if(true){ let z = 3; } console.log(z); // Uncaught ReferenceError: z is not defined for(var i=0; i { return x + y; } const add3 = (x,y) => x + y; ๐ธ this ๋ฐ์ธ๋ ๋ฐฉ์ ์ผ๋ฐ ํจ์์ ์์ ์ ํธ์ถํ๋ ๊ฐ์ฒด๋ฅผ ๊ฐ๋ฆฌํค๋ dynamic this์๋ค. var relationship1 = { ..