如何将数组中的数组转换为字符串？

Question

I'm new to programming. I am coding with javascript. I want to convert an array with 3 arrays inside it to one single string and have spaces between each of the different arrays.

I want to turn this:

var myArray = [['example'], ['text'], ['hm']]

Into this:

var myString = 'example text hm'

Answer 1

I think you want that to be an array with [] . If that's the case, this is a good use for reduce() combined with join() which will progressively build a concatenated array which you can then join:

 let myArray = [['example'], ['text', 'text2'], ['hm']] let str = myArray.reduce((all, arr) => all.concat(arr)).join(' ') console.log(str) 

Answer 2

Use nested for-each loops.

myString = "";
for each (row in myArray){
    for each (column in row){
        myString = myString + column;
    }
}

Answer 3

In this specific case, you can use the standard Array.join() . This will invoke the sub-array's .toString() method. Usually it returns a string of the items, separated by commas, but Since you've got only a single item in each sub-array, you'll get that item in a string.

 const myArray = [['example'], ['text'], ['hm']] const result = myArray.join(' ') console.log(result) 

Answer 4

You can join them together using Array.join(' ')

const sentence = myArray.join(' ')

will return "example text hm"

The speech marks separated will keep the words separate and stop them joining together. If they are together it will join all the strings "exampletexthm"

I would also suggest that you use const or let instead of var . It can cause some issues. Article to look at