Array of arrays

Recursion + Loop

let array = [[["c",["a"]],[["bc"],["cdef"]]]]let result = []function collection(arr){    for(let i = 0; i<arr.length; i++){        if(Array.isArray(arr[i])){            collection(arr[i]) //再次执行collection函式 所以会一直判断是否为阵列        }        else{            result.push(arr[i])        }    }    return result}console.log(collection(array))