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length 프로퍼티 사용 예
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| var a = [1,2,3,4,5,6];//배열 생성 | |
| console.log(a.length);//6 출력 | |
| a.length = 2; | |
| console.log(a.length);//2 출력 | |
| console.log(a);//[1,2] 출력 |
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