자바스크립트 기초

1.1.변수

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2.2.자료형

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3.3.대화상자(alert,prompt,confirm)

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4.4.형변환

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5.5.기본연산자(Operators)

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6.6.비교 연산자, 조건문(if,else)

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7.7.논리 연산자(AND, OR, NOT)

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8.8.반복문 loop(or,while,do while)

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