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<h1>JavaScript 百分比进度条</h1> <div id="myProgress"> <div id="myBar">10%</div> </div> <br> <button onclick="move()">点我</button> <style> #myProgress { width: 100%; background-color: #ddd; } #myBar { width: 10%; height: 30px; background-color: #4CAF50; text-align: center; line-height: 30px; color: white; } </style> <script> function move() { var elem = document.getElementById("myBar"); var width = 10; var id = setInterval(frame, 10); function frame() { if (width >= 100) { clearInterval(id); } else { width++; elem.style.width = width + '%'; elem.innerHTML = width * 1 + '%'; } } } </script>

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