Javascript Data Type How to - Rearrange 2-dimensional array to single dimensional array dynamically

Question

We would like to know how to rearrange 2-dimensional array to single dimensional array dynamically.

Answer


<!DOCTYPE html>
<html>
<head>
<script type='text/javascript'>
<!--from  w  w w  .  jav a  2s .  c  o m-->
var multi = [
    ["a","b","c"],
    ["d","e","f"],
    ["g","h","i"],
]
var multi2 = [];
for (var i = 0; i < multi.length; i++) { // 2
    for (var j = 0; j < multi[i].length; j++) { // 3
        multi2[j] = multi2[j]||[];
        multi2[j].push(multi[i][j])
    }
}
document.writeln(multi2);

</script>
</head>
<body>
</body>
</html>

The code above is rendered as follows: