原生JavaScript实现进度条
JavaScript实现进度条的具体代码，供大家参考，具体内容如下
进度条实现介绍使用JavaScript实现进度条功能。
原理：通过鼠标移动事件，获取鼠标移动的距离。
步骤：
（1）html 中 div 布局（2）css 样式编写（3）JavaScript特效编写
html代码<body> <!-- 整体盒子 --> <div id='box'> <!-- 进度条整体 --> <div id='progress'> <!-- 进度条长度 --> <div id='progress_head'></div> <!-- 进度条移动条 --> <span id='span'></span> <div> <!-- 显示数据 --> <div id='percentage'>0%</div> </div></body>css样式
<style> /* 整体样式，消除默认样式 */ body{ margin:0; padding:0; } #box{ position:relative; width:1000px; height:30px; margin:100px auto; } #progress{ position:relative; width:900px; height:30px; background:#999999; border-radius:8px; margin:0 auto; } #progress_head{ width:0px; height:100%; border-top-left-radius:8px; border-bottom-left-radius:8px; background:#9933CC; } span{ position:absolute; width:20px; height:38px; background:#9933CC; top:-4px; left:0px; cursor:pointer; } #percentage{ position:absolute; line-height:30px; text-align:center; right:-44px; top:0; } </style>JavaScript代码
<script> //js获取节点 var oProgress=document.getElementById(’progress’); var oProgress_head=document.getElementById(’progress_head’); var oSpan=document.getElementById(’span’); var oPercentage=document.getElementById(’percentage’) //添加事件 鼠标按下的事件 oSpan.onmousedown=function(event){ var event=event || window.event; var x=event.clientX-oSpan.offsetLeft; document.onmousemove=function(){ var event=event || window.event; var wX=event.clientX-x; if(wX<0) { wX=0; }else if(wX>=oProgress.offsetWidth-20) { wX=oProgress.offsetWidth - 20; } oProgress_head.style.width=wX+’px’; oSpan.style.left=wX+’px’; oPercentage.innerHTML=parseInt(wX/(oProgress.offsetWidth-20)*100)+’%’; return false; }; document.onmouseup=function(){ document.onmousemove=null; }; }; </script>
效果图
<!DOCTYPE><html lang='en'><head> <meta http-equiv='Content-Type' content='text/html; charset=utf-8' /> <title>进度条</title> <style> /* 整体样式，消除默认样式 */ body{ margin:0; padding:0; } #box{ position:relative; width:1000px; height:30px; margin:100px auto; } #progress{ position:relative; width:900px; height:30px; background:#999999; border-radius:8px; margin:0 auto; } #progress_head{ width:0px; height:100%; border-top-left-radius:8px; border-bottom-left-radius:8px; background:#9933CC; } span{ position:absolute; width:20px; height:38px; background:#9933CC; top:-4px; left:0px; cursor:pointer; } #percentage{ position:absolute; line-height:30px; text-align:center; right:-44px; top:0; } </style></head><body> <!-- 整体盒子 --> <div id='box'> <!-- 进度条整体 --> <div id='progress'> <!-- 进度条长度 --> <div id='progress_head'></div> <!-- 进度条移动条 --> <span id='span'></span> <div> <!-- 显示数据 --> <div id='percentage'>0%</div> </div></body></html><script> //js获取节点 var oProgress=document.getElementById(’progress’); var oProgress_head=document.getElementById(’progress_head’); var oSpan=document.getElementById(’span’); var oPercentage=document.getElementById(’percentage’) //添加事件 鼠标按下的事件 oSpan.onmousedown=function(event){ var event=event || window.event; var x=event.clientX-oSpan.offsetLeft; document.onmousemove=function(){ var event=event || window.event; var wX=event.clientX-x; if(wX<0) { wX=0; }else if(wX>=oProgress.offsetWidth-20) { wX=oProgress.offsetWidth - 20; } oProgress_head.style.width=wX+’px’; oSpan.style.left=wX+’px’; oPercentage.innerHTML=parseInt(wX/(oProgress.offsetWidth-20)*100)+’%’; return false; }; document.onmouseup=function(){ document.onmousemove=null; }; }; </script>
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好吧啦网。
相关文章：
网公网安备