JavaScript實現(xiàn)進度條的具體代碼，供大家參考，具體內容如下
進度條實現(xiàn)介紹
使用JavaScript實現(xiàn)進度條功能。
原理：通過鼠標移動事件，獲取鼠標移動的距離。
步驟：
（1）html 中 div 布局
（2）css 樣式編寫
（3）JavaScript特效編寫
html代碼
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<body> <!-- 整體盒子 --> <div id="box"> <!-- 進度條整體 --> <div id="progress"> <!-- 進度條長度 --> <div id="progress_head"></div> <!-- 進度條移動條 --> <span id="span"></span> <div> <!-- 顯示數(shù)據(jù) --> <div id="percentage">0%</div> </div></body> |
css樣式
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<style> /* 整體樣式，消除默認樣式 */ 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代碼
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<script> //js獲取節(jié)點 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 鼠標按下的事件 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> |
效果圖
整體代碼
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<!DOCTYPE><html lang="en"><head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>進度條</title> <style> /* 整體樣式，消除默認樣式 */ 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> <!-- 整體盒子 --> <div id="box"> <!-- 進度條整體 --> <div id="progress"> <!-- 進度條長度 --> <div id="progress_head"></div> <!-- 進度條移動條 --> <span id="span"></span> <div> <!-- 顯示數(shù)據(jù) --> <div id="percentage">0%</div> </div></body></html><script> //js獲取節(jié)點 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 鼠標按下的事件 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內容，希望對大家的學習有所幫助，也希望大家多多支持服務器之家。
原文鏈接：https://blog.csdn.net/weixin_44134972/article/details/85332929
