将字符串拼接成顺序截取的数组

将字符串拼接成顺序截取的数组

将字符串拼接成顺序截取的数组
function addarr(str) {
let myarr = str.split(’/’)
let result = []
for (let i = 1; i <= myarr.length; i++) {
result.push(myarr.slice(0, i))
}
return result.map(i => i.join(’/’))
}
console.log(addarr(‘a/b/c’)) // [‘a’,‘a/b’,‘a/b/c’]