string/22.html · 望曦开源团队/JavaScript案例合集

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望曦开源团队/JavaScript案例合集

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workspace_javascript

string

22.html

22.html 5.30 KB

<!DOCTYPE html>
<html lang="zh-CN">
<head>
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <title>字符串重复 - repeat</title>
 <style>
 * { margin: 0; padding: 0; box-sizing: border-box; }
 body {
 font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
 background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
 min-height: 100vh;
 padding: 20px;
 }
 .container {
 max-width: 900px;
 margin: 0 auto;
 background: white;
 border-radius: 15px;
 box-shadow: 0 10px 30px rgba(0,0,0,0.3);
 overflow: hidden;
 }
 .header {
 background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
 color: white;
 padding: 30px;
 text-align: center;
 }
 .header h1 { font-size: 28px; margin-bottom: 10px; }
 .content { padding: 30px; }
 .section { margin-bottom: 30px; }
 .section h2 {
 color: #333;
 margin-bottom: 15px;
 padding-bottom: 10px;
 border-bottom: 2px solid #fa709a;
 }
 .code-block {
 background: #f8f9fa;
 border-left: 4px solid #fa709a;
 padding: 15px;
 margin: 15px 0;
 border-radius: 5px;
 font-family: 'Courier New', monospace;
 overflow-x: auto;
 }
 .demo-area {
 background: #f8f9fa;
 padding: 20px;
 border-radius: 10px;
 margin: 20px 0;
 }
 .btn {
 background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
 color: white;
 border: none;
 padding: 10px 20px;
 border-radius: 5px;
 cursor: pointer;
 font-size: 14px;
 margin: 5px;
 transition: transform 0.2s;
 }
 .btn:hover { transform: translateY(-2px); }
 .result {
 background: white;
 padding: 15px;
 border-radius: 5px;
 margin-top: 15px;
 border: 1px solid #ddd;
 min-height: 50px;
 }
 .result-item {
 padding: 8px;
 margin: 5px 0;
 background: #fff3e0;
 border-radius: 3px;
 font-family: 'Courier New', monospace;
 }
 .info-box {
 background: #fff3e0;
 border-left: 4px solid #ff9800;
 padding: 15px;
 margin: 15px 0;
 border-radius: 5px;
 }
 </style>
</head>
<body>
 <div class="container">
 <div class="header">
 <h1>字符串重复 - repeat</h1>
 <p>重复字符串指定次数</p>
 </div>
 <div class="content">
 <div class="section">
 <h2>📖 语法说明</h2>
 <div class="code-block">
 <code>str.repeat(count)</code>
 </div>
 <div class="info-box">
 <strong>参数:</strong><br>
 - count: 重复次数(0到Infinity)<br>
 <strong>特点:</strong><br>
 - 返回重复指定次数的新字符串<br>
 - count为0返回空字符串<br>
 - 负数或Infinity会报错
 </div>
 </div>
 <div class="section">
 <h2>🎯 交互演示</h2>
 <div class="demo-area">
 <h3>字符串: "abc"</h3>
 <button class="btn" onclick="repeatThree()">重复3次</button>
 <button class="btn" onclick="repeatZero()">重复0次</button>
 <button class="btn" onclick="repeatOne()">重复1次</button>
 <button class="btn" onclick="repeatLarge()">重复10次</button>
 <div class="result" id="result"><p style="color: #999;">点击按钮查看结果...</p></div>
 </div>
 </div>
 <div class="section">
 <h2>💡 常用场景</h2>
 <div class="code-block">
 <code>// 创建分隔线<br>'-'.repeat(20); // "--------------------"<br><br>// 缩进<br>' '.repeat(4); // " "</code>
 </div>
 </div>
 </div>
 </div>
 <script>
 const str = 'abc';
 function showResult(title, result) {
 document.getElementById('result').innerHTML = `
 <div class="result-item"><strong>${title}</strong></div>
 <div class="result-item">结果: "${result}"</div>
 <div class="result-item">长度: ${result.length}</div>
 `;
 }
 function repeatThree() {
 const result = str.repeat(3);
 showResult("'abc'.repeat(3)", result);
 }
 function repeatZero() {
 const result = str.repeat(0);
 showResult("'abc'.repeat(0)", result);
 }
 function repeatOne() {
 const result = str.repeat(1);
 showResult("'abc'.repeat(1)", result);
 }
 function repeatLarge() {
 const result = str.repeat(10);
 showResult("'abc'.repeat(10)", result);
 }
 </script>
</body>
</html>

一键复制编辑原始数据按行查看历史

弦中落宫商提交于 2023年06月14日 10:30 +08:00 . 添加案例:字符串重复 - repeat

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156

<!DOCTYPE html>
<html lang="zh-CN">
<head>
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <title>字符串重复 - repeat</title>
 <style>
 * { margin: 0; padding: 0; box-sizing: border-box; }
 body {
 font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
 background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
 min-height: 100vh;
 padding: 20px;
 }
 .container {
 max-width: 900px;
 margin: 0 auto;
 background: white;
 border-radius: 15px;
 box-shadow: 0 10px 30px rgba(0,0,0,0.3);
 overflow: hidden;
 }
 .header {
 background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
 color: white;
 padding: 30px;
 text-align: center;
 }
 .header h1 { font-size: 28px; margin-bottom: 10px; }
 .content { padding: 30px; }
 .section { margin-bottom: 30px; }
 .section h2 {
 color: #333;
 margin-bottom: 15px;
 padding-bottom: 10px;
 border-bottom: 2px solid #fa709a;
 }
 .code-block {
 background: #f8f9fa;
 border-left: 4px solid #fa709a;
 padding: 15px;
 margin: 15px 0;
 border-radius: 5px;
 font-family: 'Courier New', monospace;
 overflow-x: auto;
 }
 .demo-area {
 background: #f8f9fa;
 padding: 20px;
 border-radius: 10px;
 margin: 20px 0;
 }
 .btn {
 background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
 color: white;
 border: none;
 padding: 10px 20px;
 border-radius: 5px;
 cursor: pointer;
 font-size: 14px;
 margin: 5px;
 transition: transform 0.2s;
 }
 .btn:hover { transform: translateY(-2px); }
 .result {
 background: white;
 padding: 15px;
 border-radius: 5px;
 margin-top: 15px;
 border: 1px solid #ddd;
 min-height: 50px;
 }
 .result-item {
 padding: 8px;
 margin: 5px 0;
 background: #fff3e0;
 border-radius: 3px;
 font-family: 'Courier New', monospace;
 }
 .info-box {
 background: #fff3e0;
 border-left: 4px solid #ff9800;
 padding: 15px;
 margin: 15px 0;
 border-radius: 5px;
 }
 </style>
</head>
<body>
 <div class="container">
 <div class="header">
 <h1>字符串重复 - repeat</h1>
 <p>重复字符串指定次数</p>
 </div>
 <div class="content">
 <div class="section">
 <h2>📖 语法说明</h2>
 <div class="code-block">
 <code>str.repeat(count)</code>
 </div>
 <div class="info-box">
 <strong>参数:</strong><br>
 - count: 重复次数(0到Infinity)<br>
 <strong>特点:</strong><br>
 - 返回重复指定次数的新字符串<br>
 - count为0返回空字符串<br>
 - 负数或Infinity会报错
 </div>
 </div>
 <div class="section">
 <h2>🎯 交互演示</h2>
 <div class="demo-area">
 <h3>字符串: "abc"</h3>
 <button class="btn" onclick="repeatThree()">重复3次</button>
 <button class="btn" onclick="repeatZero()">重复0次</button>
 <button class="btn" onclick="repeatOne()">重复1次</button>
 <button class="btn" onclick="repeatLarge()">重复10次</button>
 <div class="result" id="result"><p style="color: #999;">点击按钮查看结果...</p></div>
 </div>
 </div>
 <div class="section">
 <h2>💡 常用场景</h2>
 <div class="code-block">
 <code>// 创建分隔线<br>'-'.repeat(20); // "--------------------"<br><br>// 缩进<br>' '.repeat(4); // " "</code>
 </div>
 </div>
 </div>
 </div>
 <script>
 const str = 'abc';
 function showResult(title, result) {
 document.getElementById('result').innerHTML = `
 <div class="result-item"><strong>${title}</strong></div>
 <div class="result-item">结果: "${result}"</div>
 <div class="result-item">长度: ${result.length}</div>
 `;
 }
 function repeatThree() {
 const result = str.repeat(3);
 showResult("'abc'.repeat(3)", result);
 }
 function repeatZero() {
 const result = str.repeat(0);
 showResult("'abc'.repeat(0)", result);
 }
 function repeatOne() {
 const result = str.repeat(1);
 showResult("'abc'.repeat(1)", result);
 }
 function repeatLarge() {
 const result = str.repeat(10);
 showResult("'abc'.repeat(10)", result);
 }
 </script>
</body>
</html>