js进度条js动态进度条的绑定。

用javascript设计进度条，要求点击“开始”按钮后，进度条才开始运行

<html xmlns="/1999/xhtml"> <head> <title>TestPage</title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <script type="text/javascript"> function tt(){ var barObj = document.getElementById("proBar"); var currentWidth = parseInt(barObj.style.width.substring(0, barObj.style.width.length - 1)); if (currentWidth < 400) { barObj.style.width = (currentWidth + 1) + "px"; } else{return ;} setTimeout("tt()", 10); } </script> </head> <body> <div id="proBar" style="width:0px;background-color:green;color:white">processbar</div> <input type="button" id="btn1" onclick="tt()" value="start"> </body> </html>

js动态进度条的绑定。

1.setTimeout和clearTimeout <html> <head> <title>进度条</title> <style type="text/css"> .container{ width:450px; border:1px solid #6C9C2C; height:25px; } #bar{ background:#95CA0D; float:left; height:100%; text-align:center; line-height:150%; } </style> <script type="text/javascript"> function run(){ var bar = document.getElementById("bar"); var total = document.getElementById("total"); bar.style.width=parseInt(bar.style.width) + 1 + "%"; total.innerHTML = bar.style.width; if(bar.style.width == "100%"){ window.clearTimeout(timeout); return; } var timeout=window.setTimeout("run()",100); } window.onload = function(){ run(); } </script> </head> <body> <div class="container"> <div id="bar" style="width:0%;"></div> </div> <span id="total"></span> </body> </html>