怎么合并数组

var list = [
    ['11','22','33'],
    ['aa','bb'],
]

最终的结果是
var list = [
   ['112233'],
   ['aabb']
]

---

var res = []

for(i in list) {
    res.push(list[i].toString().replace(/,/g, ''))
}

最终结果的 ['112233'] 可以忽略成字符串 '112233'

---

var result = [];
for(var i = 0, k = list.length; i < k; i++){
    result.push(list[i].join('').split());
}

---

var list=list.map(function (v) {
    return new Array(v.join(''))
})

---

用concat

---

list = list.map(_ => [_.join('')])