Make star diamond with js

starDiamond.js

// radius (largest row of stars) must be an odd number
function makeDiamondWithStars(radius) { // let's say radius is 9
    let starsOrder = []; // we list down the number of stars needed to put on each line
    for (let i = 1; i <= radius; i+=2) {
        starsOrder.push(i);
    }
    // after this loop starsOrder array is [1, 3, 5, 7, 9]
    starsOrder = starsOrder.concat(starsOrder.slice(0,-1).reverse()); // now starsOrder is [1, 3, 5, 7, 9, 7, 5, 3, 1]
    const midOfTarget = Math.floor(radius/2); // 4
    for (let j=0; j<starsOrder.length; j++) {
        const space = Math.abs(midOfTarget - j); // space needed before putting stars in a line is absolute difference of midOfTarget and current line which is 'j'
        const starsNumber = starsOrder[j]; // we get the stars needed in a line from starsOrder array 
        const line = ' '.repeat(space*2) + '* '.repeat(starsNumber); // formulate the line with neccessary space and stars
        console.log(line + '\n');
    }
}