本文介绍了css 进度条的文字根据进度渐变的示例代码，分享给大家，具体如下：
需求
1.进度条里面的文字需要根据进度的长度而变化
原理
用两个一模一样的样式的 div 重叠起来
效果
字体开始为 蓝色，跟随进度条变为 白色
代码
<!DOCTYPE html><html lang="cmn-hans"><head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no"> <script>!function(e,t){function n(){t.body?t.body.style.fontSize=12*o+"px":t.addEventListener("DOMContentLoaded",n)}function d(){var e=i.clientWidth/10;i.style.fontSize=e+"px"}var i=t.documentElement,o=e.devicePixelRatio||1;if(n(),d(),e.addEventListener("resize",d),e.addEventListener("pageshow",function(e){e.persisted&&d()}),o>=2){var a=t.createElement("body"),s=t.createElement("div");s.style.border=".5px solid transparent",a.appendChild(s),i.appendChild(a),1===s.offsetHeight&&i.classList.add("hairlines"),i.removeChild(a)}}(window,document);</script> <title>进度条渐变</title> <style type="text/css"> * { box-sizing: border-box; } .box{ position: fixed; left: 50%; transform: translate(-50%); width: 320px; height: 44px; background-color: white; color: #00a0e9; border: 1px solid #00a0e9; } .process{ position: absolute; height: 100%; width: 0; background: #00a0e9; color: white; overflow: hidden; z-index: 10; } .process-text{ position: absolute; left: 160px; top: 50%; font-size: 12px; transform: translate(-50%, -50%); white-space: nowrap; } </style> <script> function process() { var t = 1; var max = 320; var progress = document.getElementById("process"); var process_texts = document.getElementsByClassName("process-text"); var interval = setInterval(function () { if (t == max) { clearInterval(interval); for (var i in process_texts){ process_texts[i].innerHTML = 完成 } } else { progress.style.width = t + "px"; for (var i in process_texts){ process_texts[i].innerHTML = 进度 + (t / max * 100).toFixed(2) + "%" } t++; } }, 10) } </script></head><body><div class="box" onclick="process()"> <div class="process" id="process"> <span class="process-text">点击开始</span> </div> <span class="process-text">点击开始</span></div></body></html>以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。
