javaScript 그것이 알고싶다🧐

1.javaScript - fetch() 를 사용해보자!

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2.filter, forEach ,map 비교!

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3.localStorage , sessionSotrage 를 비교해보자!

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4.Axios 라이브러리

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5.for ... of / for...in

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6.Nullish-coalescing operator

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7.spread-syntax-object

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8.optional chaining

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9.array , set

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10.js 에서 console.log 활용

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