如何在 javascript 的列内创建一个包含对象数组的二维数组？

Question

I want to predefine the 2d-array containing an array of objects like this below image:

I am trying this way:

var grid = [];
iMax = 3;
jMax = 2;
count = 0;

    for (let i = 0; i < iMax; i++) {
      grid[i] = [];

      for (let j = 0; j < jMax; j++) {
        grid[i][j] = count;
        count++;
      }
    }

Answer 1

In your code you're building up the two-dimensional array, but you are filling the rows with numbers (ie your setting the count ) instead of an array of objects. So if you want to achieve the exact same structure as provided in the screenshot, you can do:

 const rows = 4; const cols = 4; const elementCount = 3; function buildGrid(rows,cols, elementCount) { const grid = []; for(let i=0; i < rows; i++) { grid[i] = []; for(let j=0; j < cols; j++) { grid[i].push(Array.from({length:elementCount}, () => ({}))); } } return grid; } const grid = buildGrid(rows,cols,elementCount); console.log(grid);