程式碼

let canvas = document.getElementById("tetris");
let scoreboard = document.getElementById("score");
let ctx = canvas.getContext("2d");
ctx.scale(30,30);
const FOUR = [                              //設定
    [[0,1,0,0],[0,1,0,0],[0,1,0,0],[0,1,0,0]],//I紅
    [[0,1,0],  [0,1,0],  [1,1,0]],            //J橘
    [[0,1,0],  [0,1,0],  [0,1,1]],            //L黃
    [[1,1,0],  [0,1,1],  [0,0,0]],            //Z綠
    [[0,1,1],  [1,1,0],  [0,0,0]],            //S藍
    [[1,1,1],  [0,1,0],  [0,0,0]],            //T靛
    [[1,1],    [1,1],]];             //M紫,正方形,以上共7個
const COLORS = [
    "lightgray","red","orange","yellow","darkgreen","blue","indigo","purple"];
const ROWS = 20;                    //列數ROWS
const COLS = 10;                    //欄數COLumnS
let grid = generateGrid();          //呼叫函數產生20x10格子
let fallingPieceObj = null;
let score = 0;
setInterval(newGameState,200);      //設定間隔500
function newGameState(){            //函數
    checkGrid();
    if(!fallingPieceObj){           //如果空的,產生新方塊
        fallingPieceObj = randomPieceObject();
        renderPiece();};                //新方塊
    moveDown();}                        //繼續往下
function checkGrid(){ //函數逐列檢查是否滿格rowFiller?
    let count = 0;
    for(let i=0;i3){score+=100}    //刪4列100分
    document.getElementById("score").innerHTML = "分數: " + score;}
function generateGrid(){        //函數一開始就設定格子
    let grid = [];              //宣告空白陣列[]
    for(let i=0; i=0 && p=0 && q0){ return true;};}
            else{ return true;}; }; };};
    return false;}
function renderGame(){
    for(let i=0; i
html程式碼
<meta charset="UTF-8">
<title>張乃元改寫mohd-aman俄羅斯方塊</title>
<link rel="stylesheet" href="./style.css">
<h1 id="score">張乃元分數: 0</h1>
<canvas id="tetris" width="430" height="600"></canvas>
<script src="./script.js"></script>

css程式碼
*{  margin: 0;
    padding: 0;
    box-sizing: border-box;}
body{
    display: flex;
    height: 90vh;
    align-items: center;
    justify-content: space-evenly;
    flex-direction: column;
    background-color: whitesmoke;}
#tetris{
    background-color: white;
    box-shadow: 0 0 10px 2px lightgrey;}
h2{background-color: black;
    color:white;
    border: solid 5px red;
}

將index.html檔案第1列寬度更改為「width=430」，重新執行看結果。
將script.js第65列，原來一列
ctx.fillRect(fallingPieceObj.x+j,fallingPieceObj.y+i,1,1);};};};}
改成二列
ctx.fillRect(fallingPieceObj.x+j,fallingPieceObj.y+i,1,1);  
ctx.fillRect( 11+j, 1+i,1,1);};};};}
亦即物件ctx屬性fallingPieceObj.x
改成常數11
ctx屬性fallingPieceObj.y
改成常數1

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