spread operator
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Javascript ES6 Array spread operator 배열 펼치기Javascript (ES6) 2020. 7. 25. 00:23
//spread operator [...val] 배열을 펼쳐서 전달할 때 편함 let pre = ["apple", "orange", 100]; let preCopy = ["apple", "orange", 100]; let newData = [...pre]; console.log(pre, newData); //같은 값 console.log(pre === newData); //false console.log(pre === preCopy); //false let ppp = [100,200,"hello",null]; let newPPP = [0,1,2,3,4, ...ppp, 4]; console.log(ppp, newPPP);// [0, 1, 2, 3, 4, 100, 200, "hello", null, 4] f..