A beautiful encapsulated progress bar_image special effects

Copy code The code is as follows:

<script> <br>document.execCommand("BackgroundImageCache",false,true); <br><br>function ProcessBar(){ <br>   this.width = 256; <br>   this.height = 18; <br>   this.top = 0; <br>   this.left = 0; <br>   this.backImg = "process_back.gif"; <br>   this.foreImg = "process.gif"; <br>   this.backDiv = document.createElement("div"); <br>   this.foreDiv = document.createElement("div"); <br>   this.fontDiv = document.createElement("div"); <br><br>   this.isMoving = false; <br>   this.nowLength = 0; <br>   this.moveInterval = 100; <br>   this.moveRange = 1; <br>   this.timer; <br><br>   ProcessBar.nowObj = this; <br><br>   this.init = function(){ <br>        this.foreDiv.style.backgroundImage = "url("   this.foreImg   ")"; <br>        this.foreDiv.style.backgroundRepeat = "no-repeat"; <br>        this.foreDiv.style.position = "absolute"; <br>        this.foreDiv.style.width = this.nowLength; <br>        this.foreDiv.style.height = this.height; <br>        this.foreDiv.style.top = 0; <br>        this.foreDiv.style.left = 0; <br><br>        this.fontDiv.style.background = "transparent"; <br>        this.fontDiv.style.position = "absolute"; <br>        this.fontDiv.style.width = this.width; <br>        this.fontDiv.style.height = this.height; <br>        this.fontDiv.style.top = 2; <br>        this.fontDiv.style.left = 0; <br>        this.fontDiv.style.textAlign = "center"; <br>        this.fontDiv.style.fontSize = "13px"; <br>        this.fontDiv.appendChild(document.createTextNode(" ")); <br><br>        this.backDiv.style.backgroundImage = "url("   this.backImg   ")"; <br>        this.backDiv.style.backgroundRepeat = "no-repeat"; <br>        this.backDiv.style.position = "absolute"; <br>        this.backDiv.style.width = this.width; <br>        this.backDiv.style.height = this.height; <br>        this.backDiv.style.top = this.top; <br>        this.backDiv.style.left = this.left; <br><br>        this.backDiv.appendChild(this.foreDiv); <br>        this.backDiv.appendChild(this.fontDiv); <br><br>        document.body.appendChild(this.backDiv); <br>   } <br><br>   this.changeMode = function(){ <br>        this.isMoving = !this.isMoving; <br><br>        if(this.isMoving){ <br>            this.timer = window.setInterval(ProcessBar.nowObj.moving, this.moveInterval); <br>        }else{ <br>            window.clearInterval(this.timer); <br>        } <br>   }<br><br>   this.moving = function(){ <br>        ProcessBar.nowObj.nowLength  = ProcessBar.nowObj.moveRange; <br>        ProcessBar.nowObj.foreDiv.style.width = ProcessBar.nowObj.nowLength; <br><br>        ProcessBar.nowObj.fontDiv.firstChild.data = Math.ceil((ProcessBar.nowObj.nowLength/ProcessBar.nowObj.width )*100)   "%"; <br><br>        if(ProcessBar.nowObj.nowLength >= ProcessBar.nowObj.width ){ <br>            window.clearInterval(ProcessBar.nowObj.timer); <br>            ProcessBar.nowObj.fontDiv.firstChild.data = "Complete!"; <br>        } <br>   } <br><br>    <br>} <br><br>var processBar = new ProcessBar(); <br>processBar.backImg = "/upload/2007415102314868.gif"; processBar.foreImg = "/upload/2007415102319734.gif"; processBar.top = 100; <br>processBar.left = 20; <br>processBar.init(); <br></script>

<input type="button" value="start" onclick="processBar.changeMode();if(processBar.isMoving){this.value='Stop';}else{this.value='Start';}">
[Ctrl A 全选 注:如需引入外部Js需刷新才能执行

]<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/2007415102319929.jpg"; processBar.foreImg = "/upload/2007415102319777.jpg"; processBar.top = 100; processBar.left = 20; processBar.init(); </script>