数组常用方法

2022-05-20 102 阅读1分钟

join

const arr = ['pr', 'is', 18];
consloe(arr.join())  'pr,is,18'
consloe(arr.join(''))  'pris18'
consloe(arr.join(' ')) 'pr is 18'
consloe(arr.join('-')) 'pr-is-18'