Based on the code snippet provided, it seems like there might be some confusion regarding the concept of a 2D array. Currently, all the data is being stored in a single 1D array instead of organizing it properly in a 2D array structure.
An analogy to help understand this better is to visualize pixels on a screen arranged in rows and columns, forming a 2D grid. The rows represent horizontal lines, while the columns contain individual pixels.
Let's focus on addressing this issue first by creating a proper 2D array:
let result = [];
for (var y=0; y<n; y++)
{
result.push( [] );
for (var x=0; x<n; x++)
{
result[y].push( (x+1) * (y+1) );
}
}
In this block of code, we initialize the 'result' array and populate it with values in a row-column format, mimicking the concept of a 2D array.
After setting up the 2D array, the next step involves printing out the table with the equations represented:
function printTable( tbl )
{
let nRows = tbl.length;
let nCols = tbl[0].length;
for (var y=0; y<nRows; y++)
{
let rowStr = '';
for (var x=0; x<nCols; x++)
{
if (x!=0) rowStr += " | ";
rowStr += `${y+1} x ${x+1} = ${tbl[y][x]}`;
}
console.log(rowStr);
}
}
Finally, I've consolidated the complete code for generating a multiplication table using functions. Even though you're not yet familiar with functions, understanding these fundamental concepts can pave the way for your learning process.
Please feel free to modify the code to store the entire equation for each entry in the table instead of just the result.
window.addEventListener('load', init, false);
function init()
{
let result = makeMultTable(3);
printTable(result);
}
function makeMultTable(n)
{
let result = [];
for (var y=0; y<n; y++)
{
result.push( [] );
for (var x=0; x<n; x++)
{
result[y].push( (x+1) * (y+1) );
}
}
return result;
}
function printTable( tbl )
{
let nRows = tbl.length;
let nCols = tbl[0].length;
for (var y=0; y<nRows; y++)
{
let rowStr = '';
for (var x=0; x<nCols; x++)
{
if (x!=0) rowStr += " | ";
rowStr += `${y+1} x ${x+1} = ${tbl[y][x]}`;
}
console.log(rowStr);
}
}