Two Dimensional Array in Javascript Object -

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i want create object contains 1 or more 2 dimensional arrays in javascript.

i tried following way (in example try add 1 2 dimensional array): 

var xsize = 8;   var ysize = 8;   var obj = {    field : new array(xsize),    field[0] : new array(ysize),    foo : 1,    bar : 100   }

info:
- gives me strange error "missing : after property id" not seem make sense
- unfortunately didn't find examples showing how far using google
- if don't add field[0] ... creating 2nd array works.
- changing xsize , ysize numbers new array(8)... doesn't work.

i appreciate if show me how or explain why cannot @ , need use other method.

thanks lot!

the error "missing : after property id" because javascript sees field part of field[0] , expects colon before value of field. instead gets open bracket complains.

you can't hard code object definition has dimensions set @ run time. have build object @ run time well. perhaps

var xsize = 8;   var ysize = 8;  var obj = {    field : new array(),    foo : 1,    bar : 100   }  (var = 0; < xsize; i++) {   obj.field.push(new array(ysize)); }

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