How to print an element in a multi-dimensional array

Asked Nov 11 '19 at 20:53

Active Nov 11 '19 at 21:00

Viewed 59 times

So there are 9 cells(id from cell0-cell8) whose content that I need to keep track of and store in a multidimensional array:

var winningcombos = [
  [
    document.getElementById("cell" + 0).innerHTML, 
    document.getElementById("cell" + 1).innerHTML,
    document.getElementById("cell" + 2).innerHTML
  ],
  [
    document.getElementById("cell" + 3).innerHTML, 
    document.getElementById("cell" + 4).innerHTML,
    document.getElementById("cell" + 5).innerHTML
  ],
  [
    document.getElementById("cell" + 6).innerHTML, 
    document.getElementById("cell" + 7).innerHTML,
    document.getElementById("cell" + 8).innerHTML
  ],
];

However when I am trying to print the element inside the array, for example the first cell, it doesn't seem to work:

document.write(winningcombos[0][0])

Can't find the problem using console.log.

edited Nov 11 '19 at 21:00

Tyler Roper

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asked Nov 11 '19 at 20:53

Jiang Yuxin

Are there any errors in the JavaScript console? – Barmar Nov 11 '19 at 20:56
No. It just doesn't print anything – Jiang Yuxin Nov 11 '19 at 20:56
little typo `,` at the end – prhmma Nov 11 '19 at 20:57
@Blazemonger How is it one-dimensional? If so how do I make it multidimensional? I want to reach the element by winningcombos[0][0] – Jiang Yuxin Nov 11 '19 at 20:57
1

@phalanx Comma is allowed at the end of array or object literals. – Barmar Nov 11 '19 at 20:58
can you show the HTML that includes `id='cellnum'`? – Rojo Nov 11 '19 at 20:58
2

It works fine for me: https://jsfiddle.net/barmar/tvuon9k3/3/ Can you create a [mcve]? – Barmar Nov 11 '19 at 20:59
2

You shouldn't use `document.write()` after the DOM has been loaded. See https://stackoverflow.com/questions/802854/why-is-document-write-considered-a-bad-practice – Barmar Nov 11 '19 at 21:02
Just note that `"cell" + 6` is the same as `"cell6"`. I'm not sure why you're using concatenation there... – Heretic Monkey Nov 11 '19 at 21:02
try doing it within: window.onload = function () {} – Omi in a hellcat Nov 11 '19 at 21:04
@Omiinahellcat If that were the issue he would be getting an error saying that it's trying to get the property `innerHTML` of `null`. – Barmar Nov 11 '19 at 21:28

How to print an element in a multi-dimensional array

0 Answers0