Use js to develop web version of Minesweeper (with detailed code explanation)-JS Tutorial-php.cn

Use js to develop web version of Minesweeper (with detailed code explanation)

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Release： 2018-08-06 09:47:49

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//HTMEL
<body>
    <p class="content"> </p></body>
//css
.bottom,over {    text-align: center;    line-height: 0px;}
    .bottom p {        display: inline-block;        width: 30px;        height: 30px;        border: 1px solid #808080;        background-color: #f4a;        text-align: center;        font: 20px/30px arial;    }
//JS
// 保存 初始雷化记录 和 拆雷记录  100个按钮中 有25个雷var box = Array(10);
//初始化底层function initBottom() {    const content = document.getElementsByClassName(&#39;content&#39;)[0];    const bottom = document.createElement(&#39;p&#39;);    content.appendChild(bottom);    bottom.className = "bottom";
    for (let i = 0; i < 10; i++) {        box[i] = new Array(10);        for (let j = 0; j < 10; j++) {            const p = document.createElement(&#39;p&#39;);            bottom.appendChild(p);            p.id = "bottom[" + i + "][" + j + "]";            box[i][j] = 0;        }        bottom.innerHTML = bottom.innerHTML + "<br />";    }
    initBom();}
//初始化 25个 bom  颜色 和  innerHTMLfunction initBom() {    //改变颜色    for (let i = 0; i < 25; i++) {        let x = Math.floor(Math.random() * 10);        let y = Math.floor(Math.random() * 10);        while (box[x][y] == 1) {            x = Math.floor(Math.random() * 10);            y = Math.floor(Math.random() * 10);            if (box[x][y] == 0) {                break;            }        }
        box[x][y] = 1;        document.getElementById("bottom[" + x + "][" + y + "]").style.backgroundColor = "rgb(0, 0, 0)";        document.getElementById("bottom[" + x + "][" + y + "]").innerHTML = "x";  //    否则 对不起  ？    }
    // 生成底层数字    for (let i = 0; i < 10; i++) {        for (let j = 0; j < 10; j++) {
            if (!box[i][j] == 1) {                document.getElementById("bottom[" + i + "][" + j + "]").innerHTML = getNumber(i, j);            }
        }    }}
// 取得 周围雷的个数function getNumber(i, j) {    let num = 0,        x, y;    // 四周 雷的 个数统计    for (let x = i - 1; x <= i + 1; x++) {        for (y = j - 1; y <= j + 1; y++) {            if (x == i && y == j) {                continue;            }            if (document.getElementById("bottom[" + x + "][" + y + "]")) {                if (box[x][y] == 1) {                    num++;                }            }        }    }    return num;}
//初始化  上层 overfunction initOver() {
    const content = document.getElementsByClassName(&#39;content&#39;)[0];    const over = document.createElement(&#39;p&#39;);    content.appendChild(over);    over.className = "over";    over.id = "over";
    for (let i = 0; i < 10; i++) {        for (let j = 0; j < 10; j++) {            const p = document.createElement(&#39;p&#39;);            over.appendChild(p);            p.id = "over[" + i + "][" + j + "]";        }        over.innerHTML = over.innerHTML + "<br />";    }
    //取消 右击 菜单    over.oncontextmenu = function (e) {        e.returnValue = false;    }
    // 点击 做标记    over.onclick = function (e) {        const target = e.srcElement;        if (target.style.backgroundColor == "rgb(255, 255, 255)") {            target.style.backgroundColor = "#808080";        } else {            target.style.backgroundColor = "rgb(255, 255, 255)";        }    }
    // 双击拆雷    over.ondblclick = function (e) {        const target = e.srcElement;        const strId = target.id.substring(4, target.id.length);        if (document.getElementById("bottom" + strId).style.backgroundColor == "rgb(0, 0, 0)") {            document.getElementById(&#39;over&#39;).style.display = "none";        }        else {            target.style.opacity = 0;            let i = parseInt(strId.substring(1, 2));            let j = parseInt(strId.substring(4, 5));            box[i][j] = 1;            // 等于0   扩散            if (document.getElementById("bottom" + strId).innerHTML == 0) {                zooming(i, j);            } else {                if (isGameOver()) {                    alert("真厉害");                }            }
        }    }}
//扩散： 当周围有 0时，自动显示function zooming(i, j) {
    for (let x = i - 1; x <= i + 1; x++) {        for (y = j - 1; y <= j + 1; y++) {            if (document.getElementById("bottom[" + x + "][" + y + "]") && document.getElementById("bottom[" + x + "][" + y + "]").innerHTML == 0) {                document.getElementById("over[" + x + "][" + y + "]").style.opacity = 0;                if (box[x][y] == 0) {                    box[x][y] = 1;                    zooming(x, y);                }            }        }    }}
//是否清除完  box[][]  初始化 雷时赋值 1，拆雷是赋值 1，全部为1时，完成扫雷。function isGameOver() {    for (let i = 0; i < 10; i++) {        for (let j = 0; j < 10; j++) {            if (box[i][j] == 0) {                return false;            }        }    }    return true;}

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JS version of Minesweeper implementation code. The principle is good

JS version of Minesweeper implementation code

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