javascript - Javascript 数组中没有数组

Question

这个问题已经有答案了:

Merge/flatten an array of arrays (85 个回答)

已关闭 6 年前。

我是 Javascript 新手，我有一个非常简单的问题。我希望我的数组从 [1,2,3,[4,5,6,7,],9,10] 变为 [1,2,3,4,5,6,7,8,9,10]但是当我尝试将它们循环到新数组时出现错误。还有更好的解决方案吗？

var theArray = [1,2,3,[4,5,6,7,],9,10] //I want this array become [1,2,3,4,5,6,7,8,9,10]

//when I try to do so it have error, below is my code
 //Test.isArray is a function I check is it an array

var i, j;
var IdLog =[]
for (j = 0; j < theArray.length; ++j) {
   if (!Test.isArray(tempID[j])) {
       IdLog.push(thArray[j]);
       console.log(IdLog);
        } else {
        for (k = 0; theArray[j].length; ++k) {
           IdLog.push(theArray[j][k]);
            console.log(IdLog);
        }
     }
  }

Answer 1

下面的代码有效。

var theArray = [1,2,3,[4,5,6,7,],9,10];
IdLog = [].concat.apply([], theArray);
console.log(IdLog);

或

var theArray = [1,2,3,[4,5,6,7,],9,10];
IdLog=theArray.join(",").split(",");
console.log(IdLog);

Demo