2018年よく聴いてた音楽 Stevie Wonder Grant Green Nulbarich John Coltrane Pat Metheny Joe Pass Maroon5 Ásgeir The Internet petrolz Bruno Mars 2018年の最高だったアルバム Nulbarich / H.O.T John Coltrane / The Lost Album Asgeir / In the Silenc…

const obj = {hoge: 'HOGE'} const obj1 = Object.assign({}, obj) const obj2 = {...obj} obj.fuga = 'FUGA' console.info(obj) console.info(obj1) console.info(obj2) //-> {hoge: "HOGE", fuga: "FUGA"} //-> {hoge: "HOGE"} //-> {hoge: "HOGE"} {...ob…

let a = [1,2,3] console.info(a) //-> Array(3) [ 1, 2, 3 ] let b = [4,5,6] a.push(...b) console.info(a) //-> Array(6) [ 1, 2, 3, 4, 5, 6 ] ...arr が何だったか忘れがちなのでメモ