一个已封装好的漂亮进度条- Javascript

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Javascript 中的一个已封装好的漂亮进度条

出处:互联网 整理: 软晨网（RuanChen.com） 发布: 2009-10-12 浏览: 222 ::

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使用prototype.js 的时候应该特别注意的几个问题. 漂亮的widgets，支持换肤和后期开发新皮肤

复制代码代码如下:

<body> 
<input type="button" value="start" onclick="processBar.changeMode();if(processBar.isMoving){this.value='Stop';}else{this.value='Start';}"> 
</body> 
<script> 
document.execCommand("BackgroundImageCache",false,true); 
function ProcessBar(){ 
 this.width = 256; 
 this.height = 18; 
 this.top = 0; 
 this.left = 0; 
 this.backImg = "process_back.gif"; 
 this.foreImg = "process.gif"; 
 this.backDiv = document.createElement("div"); 
 this.foreDiv = document.createElement("div"); 
 this.fontDiv = document.createElement("div"); 
 this.isMoving = false; 
 this.nowLength = 0; 
 this.moveInterval = 100; 
 this.moveRange = 1; 
 this.timer; 
 ProcessBar.nowObj = this; 
 this.init = function(){ 
 this.foreDiv.style.backgroundImage = "url(" + this.foreImg + ")"; 
 this.foreDiv.style.backgroundRepeat = "no-repeat"; 
 this.foreDiv.style.position = "absolute"; 
 this.foreDiv.style.width = this.nowLength; 
 this.foreDiv.style.height = this.height; 
 this.foreDiv.style.top = 0; 
 this.foreDiv.style.left = 0; 
 this.fontDiv.style.background = "transparent"; 
 this.fontDiv.style.position = "absolute"; 
 this.fontDiv.style.width = this.width; 
 this.fontDiv.style.height = this.height; 
 this.fontDiv.style.top = 2; 
 this.fontDiv.style.left = 0; 
 this.fontDiv.style.textAlign = "center"; 
 this.fontDiv.style.fontSize = "13px"; 
 this.fontDiv.appendChild(document.createTextNode(" ")); 
 this.backDiv.style.backgroundImage = "url(" + this.backImg + ")"; 
 this.backDiv.style.backgroundRepeat = "no-repeat"; 
 this.backDiv.style.position = "absolute"; 
 this.backDiv.style.width = this.width; 
 this.backDiv.style.height = this.height; 
 this.backDiv.style.top = this.top; 
 this.backDiv.style.left = this.left; 
 this.backDiv.appendChild(this.foreDiv); 
 this.backDiv.appendChild(this.fontDiv); 
 document.body.appendChild(this.backDiv); 
 } 
 this.changeMode = function(){ 
 this.isMoving = !this.isMoving; 
 if(this.isMoving){ 
 this.timer = window.setInterval(ProcessBar.nowObj.moving, this.moveInterval); 
 }else{ 
 window.clearInterval(this.timer); 
 } 
 } 
 this.moving = function(){ 
 ProcessBar.nowObj.nowLength += ProcessBar.nowObj.moveRange; 
 ProcessBar.nowObj.foreDiv.style.width = ProcessBar.nowObj.nowLength; 
 ProcessBar.nowObj.fontDiv.firstChild.data = Math.ceil((ProcessBar.nowObj.nowLength/ProcessBar.nowObj.width )*100) + "%"; 
 if(ProcessBar.nowObj.nowLength >= ProcessBar.nowObj.width ){ 
 window.clearInterval(ProcessBar.nowObj.timer); 
 ProcessBar.nowObj.fontDiv.firstChild.data = "Complete!"; 
 } 
 } 
 
} 
var processBar = new ProcessBar(); 
processBar.backImg = "/upload/tech/20091012/20091012084645_7647966b7343c29048673252e490f736.gif"; processBar.foreImg = "/upload/tech/20091012/20091012084648_f0935e4cd5920aa6c7c996a5ee53a70f.gif"; processBar.top = 100; 
processBar.left = 20; 
processBar.init(); 
</script>

点击运行可以看到效果:

<body>
<input type="button" value="start" onclick="processBar.changeMode();if(processBar.isMoving){this.value='Stop';}else{this.value='Start';}">
</body>
<script>
document.execCommand("BackgroundImageCache",false,true);
function ProcessBar(){ this.width = 256; this.height = 18; this.top = 0; this.left = 0; this.backImg = "process_back.gif"; this.foreImg = "process.gif"; this.backDiv = document.createElement("div"); this.foreDiv = document.createElement("div"); this.fontDiv = document.createElement("div"); this.isMoving = false; this.nowLength = 0; this.moveInterval = 100; this.moveRange = 1; this.timer; ProcessBar.nowObj = this; this.init = function(){ this.foreDiv.style.backgroundImage = "url(" + this.foreImg + ")"; this.foreDiv.style.backgroundRepeat = "no-repeat"; this.foreDiv.style.position = "absolute"; this.foreDiv.style.width = this.nowLength; this.foreDiv.style.height = this.height; this.foreDiv.style.top = 0; this.foreDiv.style.left = 0; this.fontDiv.style.background = "transparent"; this.fontDiv.style.position = "absolute"; this.fontDiv.style.width = this.width; this.fontDiv.style.height = this.height; this.fontDiv.style.top = 2; this.fontDiv.style.left = 0; this.fontDiv.style.textAlign = "center"; this.fontDiv.style.fontSize = "13px"; this.fontDiv.appendChild(document.createTextNode(" ")); this.backDiv.style.backgroundImage = "url(" + this.backImg + ")"; this.backDiv.style.backgroundRepeat = "no-repeat"; this.backDiv.style.position = "absolute"; this.backDiv.style.width = this.width; this.backDiv.style.height = this.height; this.backDiv.style.top = this.top; this.backDiv.style.left = this.left; this.backDiv.appendChild(this.foreDiv); this.backDiv.appendChild(this.fontDiv); document.body.appendChild(this.backDiv); } this.changeMode = function(){ this.isMoving = !this.isMoving; if(this.isMoving){ this.timer = window.setInterval(ProcessBar.nowObj.moving, this.moveInterval); }else{ window.clearInterval(this.timer); } } this.moving = function(){ ProcessBar.nowObj.nowLength += ProcessBar.nowObj.moveRange; ProcessBar.nowObj.foreDiv.style.width = ProcessBar.nowObj.nowLength; ProcessBar.nowObj.fontDiv.firstChild.data = Math.ceil((ProcessBar.nowObj.nowLength/ProcessBar.nowObj.width)*100) + "%"; if(ProcessBar.nowObj.nowLength >= ProcessBar.nowObj.width){ window.clearInterval(ProcessBar.nowObj.timer); ProcessBar.nowObj.fontDiv.firstChild.data = "Complete!"; } }
}
var processBar = new ProcessBar();
processBar.width=327
processBar.backImg = "/upload/tech/20091012/20091012084652_fde9264cf376fffe2ee4ddf4a988880d.jpg"; processBar.foreImg = "/upload/tech/20091012/20091012084652_757b505cfd34c64c85ca5b5690ee5293.jpg"; processBar.top = 100;
processBar.left = 20;
processBar.init();
</script>

[Ctrl+A 全选提示:你可先修改部分代码,再按运行]

使用prototype.js 的时候应该特别注意的几个问题. 漂亮的widgets，支持换肤和后期开发新皮肤

Javascript 中的 一个已封装好的漂亮进度条

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Javascript 中的一个已封装好的漂亮进度条