create js array dynamically?

Question

how could I declare several js array dynamically? For example, here is what tried but failed:

 <script type="text/javascript">
 for (i=0;i<10;i++)
 {
   var "arr_"+i = new Array();
 } 

Thanks!

Answer 1

You were pretty close depending on what you would like to do..

<script type="text/javascript">
    var w = window;
     for (i=0;i<10;i++)
     {
       w["arr_"+i] = [];
     }
</script>

Would work, what is your intention for use though?

Answer 2

make it an array of arrays:

var arr = [];  // creates a new array .. much preferred method too.
for (var i = 0; i < 10; i++) {
    arr[i] = [];
}