Dynamically create a two dimensional Javascript Array

Question

Can someone show me the javascript I need to use to dynamically create a two dimensional Javascript Array like below?

desired array contents:

Answer 1

I had a similar issue recently while working on a Google Spreadsheet and came up with an answer similar to BrianV's:

  // 1st nest to handle number of columns I'm formatting, 2nd nest to build 2d array   
  for (var i = 1; i <= 2; i++) {
    tmpRange = sheet.getRange(Row + 1, Col + i, numCells2Format); // pass/fail cells
    var d2Arr = [];
    for (var j = 0; j < numCells2Format; j++) {
      // 1st column of cells I'm formatting
      if ( 1 == i) {
        d2Arr[j] = ["center"];
      // 2nd column of cells I'm formatting
      } else if ( 2 == i ) {
        d2Arr[j] = ["left"];
      }
    }
    tmpRange.setHorizontalAlignments( d2Arr );   
  }

So, basically, I had to make the assignment d2Arr[index]=["some string"] in order to build the multidimensional array I was looking for. Since the number of cells I wanted to format can change from sheet to sheet, I wanted it generalized. The case I was working out required a 15-dimension array. Assigning a 1-D array to elements in a 1-D array ended up making the 15-D array I needed.