javascirpt concat (1) 썸네일형 리스트형 vsc javascript 기초문법 2 //ex34)concat() let ar = [10,20,30]; let br = ar.concat(40); console.log(ar); console.log(br); let cr = [40,50,60]; let dr = ar.concat(cr); console.log(dr); console.log('test'); let er = [...ar,...cr]; console.log(er); let fr = ar.push(ar); console.log(fr); //join let ar = ['tiger','lion','cat']; console.log(ar.join()); console.log(ar.join('')); console.log(ar.join(" + ")); //reverse let ar = [1.. 이전 1 다음
