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  • 【HTML+CSS+JavaScript】九九乘法表

    需求:九九乘法表

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>九九乘法表</title>
        <style>
            body {
                color: #333;
            }
            table {
                width: 900px;
                table-layout: fixed;
                /*border-collapse: collapse;*/
                empty-cells: hide;
            }
            td {
                border: 1px solid #ccc;
                padding: 10px;
            }
        </style>
    </head>
    <body>
        <h1>九九乘法表</h1>
        <hr>
    
    
        <script>
            //JavaScript生成九九乘法表
            document.write('<table>');
    
            //循环 输出tr 行
            for (var i = 1; i <= 9; i ++) {
                document.write('<tr>');
    
                //输出 td 单元格
                for (var j = 1; j <= i; j ++) {
                    document.write(`<td>${i}&times;${j} = ${i * j}</td>`);
                }
                
                document.write('</tr>');
            }
    
            document.write('</table>');
    
            document.write('<br><br><br>');
    
            document.write('<table>');
    
            //循环 输出tr 行
            for (var i = 9; i >= 1; i --) {
                document.write('<tr>');
    
                //输出 td 单元格
                for (var j = 1; j <= i; j ++) {
                    document.write(`<td>${i}&times;${j} = ${i * j}</td>`);
                }
                
                document.write('</tr>');
            }
    
            document.write('</table>');
    
    
    
            document.write('<br><br><br>');
    
            document.write('<table>');
    
            //循环 输出tr 行
            for (var i = 1; i <= 9; i ++) {
                document.write('<tr>');
                //输出空的单元格
                for (var m = 1; m <= (9-i); m ++) {
                    document.write('<td></td>');
                }
                //输出 td 单元格
                for (var j = 1; j <= i; j ++) {
                    document.write(`<td>${i}&times;${j} = ${i * j}</td>`);
                }
                
                document.write('</tr>');
            }
    
            document.write('</table>');
    
    
    
    
            document.write('<br><br><br>');
    
            document.write('<table>');
    
            //循环 输出tr 行
            for (var i = 9; i >= 1; i --) {
                document.write('<tr>');
                //输出空的单元格
                for (var m = 1; m <= (9-i); m ++) {
                    document.write('<td></td>');
                }
                //输出 td 单元格
                for (var j = 1; j <= i; j ++) {
                    document.write(`<td>${i}&times;${j} = ${i * j}</td>`);
                }
                
                document.write('</tr>');
            }
    
            document.write('</table>');
    
        </script>
    
    
    </body>
    </html>
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  • 原文地址:https://www.cnblogs.com/neymargoal/p/9470986.html
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