utils/30.html · 望曦开源团队/JavaScript案例合集

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workspace_javascript

utils

30.html

30.html 6.41 KB

<!DOCTYPE html>
<html lang="zh-CN">
<head>
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <title>日期工具 - 倒计时</title>
 <style>
 * { margin: 0; padding: 0; box-sizing: border-box; }
 body {
 font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
 background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
 min-height: 100vh;
 padding: 20px;
 }
 .container { max-width: 900px; margin: 0 auto; }
 h1 { text-align: center; color: #fff; margin-bottom: 30px; font-size: 2rem; }
 .section {
 background: #fff;
 border-radius: 15px;
 padding: 25px;
 margin-bottom: 20px;
 box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
 }
 .section h2 { color: #667eea; margin-bottom: 15px; font-size: 1.3rem; }
 .code-block {
 background: #f8f9fa;
 border-left: 4px solid #667eea;
 padding: 15px;
 border-radius: 0 8px 8px 0;
 margin: 15px 0;
 font-family: monospace;
 font-size: 0.85rem;
 }
 .input-group { margin: 15px 0; }
 .input-group label { display: block; margin-bottom: 8px; color: #333; font-weight: bold; }
 .input-group input {
 width: 100%;
 padding: 12px;
 border: 2px solid #e0e0e0;
 border-radius: 8px;
 font-size: 1rem;
 }
 .btn {
 background: linear-gradient(90deg, #667eea, #764ba2);
 border: none;
 color: #fff;
 padding: 12px 25px;
 border-radius: 8px;
 cursor: pointer;
 font-size: 1rem;
 margin: 5px;
 }
 .result-box {
 background: #f0f4ff;
 border: 2px solid #667eea;
 border-radius: 10px;
 padding: 20px;
 margin-top: 20px;
 }
 .result-box h3 { color: #667eea; margin-bottom: 10px; }
 .countdown-display {
 background: #f8f9fa;
 padding: 15px;
 border-radius: 8px;
 margin: 10px 0;
 font-family: monospace;
 font-size: 1.1rem;
 }
 .countdown-time {
 background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
 color: #fff;
 padding: 30px;
 border-radius: 15px;
 text-align: center;
 margin: 20px 0;
 font-size: 2rem;
 font-weight: bold;
 }
 </style>
</head>
<body>
 <div class="container">
 <h1>日期工具 - 倒计时</h1>
 <div class="section">
 <h2>倒计时</h2>
 <div class="input-group">
 <label>目标日期:</label>
 <input type="datetime-local" id="targetDate" />
 </div>
 <button class="btn" onclick="startCountdown()">开始倒计时</button>
 <button class="btn" onclick="stopCountdown()">停止倒计时</button>
 <div class="result-box" id="resultBox" style="display:none;">
 <h3>倒计时结果</h3>
 <div class="countdown-time" id="countdownTime">00:00:00:00</div>
 <div class="countdown-display" id="countdownResult"></div>
 </div>
 </div>
 <div class="section">
 <h2>倒计时方法实现</h2>
 <div class="code-block">
// 倒计时函数<br>
function countdown(targetDate) {<br>
&nbsp;&nbsp;const now = new Date();<br>
&nbsp;&nbsp;const target = new Date(targetDate);<br>
&nbsp;&nbsp;const diff = target - now;<br><br>
&nbsp;&nbsp;if (diff <= 0) {<br>
&nbsp;&nbsp;&nbsp;&nbsp;return { days: 0, hours: 0, minutes: 0, seconds: 0 };<br>
&nbsp;&nbsp;}<br><br>
&nbsp;&nbsp;const days = Math.floor(diff / (1000 * 60 * 60 * 24));<br>
&nbsp;&nbsp;const hours = Math.floor((diff % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));<br>
&nbsp;&nbsp;const minutes = Math.floor((diff % (1000 * 60 * 60)) / (1000 * 60));<br>
&nbsp;&nbsp;const seconds = Math.floor((diff % (1000 * 60)) / 1000);<br><br>
&nbsp;&nbsp;return { days, hours, minutes, seconds };<br>
}
 </div>
 </div>
 </div>
 <script>
 let countdownInterval;
 
 function startCountdown() {
 const targetDateInput = document.getElementById('targetDate').value;
 if (!targetDateInput) {
 alert('请选择目标日期');
 return;
 }
 
 const targetDate = new Date(targetDateInput);
 document.getElementById('resultBox').style.display = 'block';
 
 if (countdownInterval) clearInterval(countdownInterval);
 
 countdownInterval = setInterval(() => {
 const result = countdown(targetDate);
 const { days, hours, minutes, seconds } = result;
 
 document.getElementById('countdownTime').textContent = 
 `${String(days).padStart(2, '0')}:${String(hours).padStart(2, '0')}:${String(minutes).padStart(2, '0')}:${String(seconds).padStart(2, '0')}`;
 
 document.getElementById('countdownResult').innerHTML = 
 `${days}天 ${hours}小时 ${minutes}分 ${seconds}秒`;
 
 if (days === 0 && hours === 0 && minutes === 0 && seconds === 0) {
 clearInterval(countdownInterval);
 alert('倒计时结束!');
 }
 }, 1000);
 }
 
 function stopCountdown() {
 if (countdownInterval) {
 clearInterval(countdownInterval);
 countdownInterval = null;
 }
 }
 
 function countdown(targetDate) {
 const now = new Date();
 const diff = targetDate - now;
 
 if (diff <= 0) {
 return { days: 0, hours: 0, minutes: 0, seconds: 0 };
 }
 
 const days = Math.floor(diff / (1000 * 60 * 60 * 24));
 const hours = Math.floor((diff % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
 const minutes = Math.floor((diff % (1000 * 60 * 60)) / (1000 * 60));
 const seconds = Math.floor((diff % (1000 * 60)) / 1000);
 
 return { days, hours, minutes, seconds };
 }
 </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07月11日 14:30 +08:00 . 添加案例: 日期工具 - 倒计时

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<!DOCTYPE html>
<html lang="zh-CN">
<head>
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <title>日期工具 - 倒计时</title>
 <style>
 * { margin: 0; padding: 0; box-sizing: border-box; }
 body {
 font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
 background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
 min-height: 100vh;
 padding: 20px;
 }
 .container { max-width: 900px; margin: 0 auto; }
 h1 { text-align: center; color: #fff; margin-bottom: 30px; font-size: 2rem; }
 .section {
 background: #fff;
 border-radius: 15px;
 padding: 25px;
 margin-bottom: 20px;
 box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
 }
 .section h2 { color: #667eea; margin-bottom: 15px; font-size: 1.3rem; }
 .code-block {
 background: #f8f9fa;
 border-left: 4px solid #667eea;
 padding: 15px;
 border-radius: 0 8px 8px 0;
 margin: 15px 0;
 font-family: monospace;
 font-size: 0.85rem;
 }
 .input-group { margin: 15px 0; }
 .input-group label { display: block; margin-bottom: 8px; color: #333; font-weight: bold; }
 .input-group input {
 width: 100%;
 padding: 12px;
 border: 2px solid #e0e0e0;
 border-radius: 8px;
 font-size: 1rem;
 }
 .btn {
 background: linear-gradient(90deg, #667eea, #764ba2);
 border: none;
 color: #fff;
 padding: 12px 25px;
 border-radius: 8px;
 cursor: pointer;
 font-size: 1rem;
 margin: 5px;
 }
 .result-box {
 background: #f0f4ff;
 border: 2px solid #667eea;
 border-radius: 10px;
 padding: 20px;
 margin-top: 20px;
 }
 .result-box h3 { color: #667eea; margin-bottom: 10px; }
 .countdown-display {
 background: #f8f9fa;
 padding: 15px;
 border-radius: 8px;
 margin: 10px 0;
 font-family: monospace;
 font-size: 1.1rem;
 }
 .countdown-time {
 background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
 color: #fff;
 padding: 30px;
 border-radius: 15px;
 text-align: center;
 margin: 20px 0;
 font-size: 2rem;
 font-weight: bold;
 }
 </style>
</head>
<body>
 <div class="container">
 <h1>日期工具 - 倒计时</h1>
 <div class="section">
 <h2>倒计时</h2>
 <div class="input-group">
 <label>目标日期:</label>
 <input type="datetime-local" id="targetDate" />
 </div>
 <button class="btn" onclick="startCountdown()">开始倒计时</button>
 <button class="btn" onclick="stopCountdown()">停止倒计时</button>
 <div class="result-box" id="resultBox" style="display:none;">
 <h3>倒计时结果</h3>
 <div class="countdown-time" id="countdownTime">00:00:00:00</div>
 <div class="countdown-display" id="countdownResult"></div>
 </div>
 </div>
 <div class="section">
 <h2>倒计时方法实现</h2>
 <div class="code-block">
// 倒计时函数<br>
function countdown(targetDate) {<br>
&nbsp;&nbsp;const now = new Date();<br>
&nbsp;&nbsp;const target = new Date(targetDate);<br>
&nbsp;&nbsp;const diff = target - now;<br><br>
&nbsp;&nbsp;if (diff <= 0) {<br>
&nbsp;&nbsp;&nbsp;&nbsp;return { days: 0, hours: 0, minutes: 0, seconds: 0 };<br>
&nbsp;&nbsp;}<br><br>
&nbsp;&nbsp;const days = Math.floor(diff / (1000 * 60 * 60 * 24));<br>
&nbsp;&nbsp;const hours = Math.floor((diff % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));<br>
&nbsp;&nbsp;const minutes = Math.floor((diff % (1000 * 60 * 60)) / (1000 * 60));<br>
&nbsp;&nbsp;const seconds = Math.floor((diff % (1000 * 60)) / 1000);<br><br>
&nbsp;&nbsp;return { days, hours, minutes, seconds };<br>
}
 </div>
 </div>
 </div>
 <script>
 let countdownInterval;
 
 function startCountdown() {
 const targetDateInput = document.getElementById('targetDate').value;
 if (!targetDateInput) {
 alert('请选择目标日期');
 return;
 }
 
 const targetDate = new Date(targetDateInput);
 document.getElementById('resultBox').style.display = 'block';
 
 if (countdownInterval) clearInterval(countdownInterval);
 
 countdownInterval = setInterval(() => {
 const result = countdown(targetDate);
 const { days, hours, minutes, seconds } = result;
 
 document.getElementById('countdownTime').textContent = 
 `${String(days).padStart(2, '0')}:${String(hours).padStart(2, '0')}:${String(minutes).padStart(2, '0')}:${String(seconds).padStart(2, '0')}`;
 
 document.getElementById('countdownResult').innerHTML = 
 `${days}天 ${hours}小时 ${minutes}分 ${seconds}秒`;
 
 if (days === 0 && hours === 0 && minutes === 0 && seconds === 0) {
 clearInterval(countdownInterval);
 alert('倒计时结束!');
 }
 }, 1000);
 }
 
 function stopCountdown() {
 if (countdownInterval) {
 clearInterval(countdownInterval);
 countdownInterval = null;
 }
 }
 
 function countdown(targetDate) {
 const now = new Date();
 const diff = targetDate - now;
 
 if (diff <= 0) {
 return { days: 0, hours: 0, minutes: 0, seconds: 0 };
 }
 
 const days = Math.floor(diff / (1000 * 60 * 60 * 24));
 const hours = Math.floor((diff % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
 const minutes = Math.floor((diff % (1000 * 60 * 60)) / (1000 * 60));
 const seconds = Math.floor((diff % (1000 * 60)) / 1000);
 
 return { days, hours, minutes, seconds };
 }
 </script>
</body>
</html>