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- 本篇文章具体介绍如下
Loading.js
具体代码如下:
//频率
var frequency = 50;
//步长
var step = 3;
//背景颜色
var loadingBgcolor = "#ffffff";
//宽度
var loadingWidth = 354;
/*
*参数说明:
*content：显示内容，可以为空；
*imageURL：将引用JS文件的路径设置即可；
*left：进度条显示位置left
*top：进度条显示位置top
*/
function Loading(content, imageURL, left, top)
{
imageURL = imageURL "Loading.jpg";
LoadTable(content, imageURL, left, top);
showimage.style.display="";
window.setInterval("RefAct();", frequency);
}
function RefAct()
{
imgAct.width = step;
if(imgAct.width > loadingWidth-4)
{
imgAct.width = 0;
}
}
function LoadTable(content, imageURL, left, top)
{
var strLoading;
strLoading = "";
strLoading = "<div id=\"showimage\" style=\"DISPLAY:none;Z-INDEX:100;LEFT:" left "px;POSITION:absolute;TOP:" top "px;\" align=\"center\">";
strLoading = "<TABLE id=\"Table1\" cellSpacing=\"0\" cellPadding=\"0\" width=\"" loadingWidth "\" border=\"0\" bgcolor=\"" loadingBgcolor "\">";
if(content != "")
{
strLoading = "<tr>";
strLoading = "<td align=\"center\">";
strLoading = "<font size=\"4\" face=\"Courier New, Courier, mono\"><strong>" content "</strong></font>";
strLoading = "</td>";
strLoading = "</tr>";
strLoading = "<TR>";
}
strLoading = "<TD class=\"Loading\" height=\"8\">";
strLoading = "<IMG id=\"imgAct\" height=\"8\" alt=\"\" src=\"" imageURL "\" width=\"0\">";
strLoading = "</TD>";
strLoading = "</TR>";
strLoading = "</TABLE>";
strLoading = "</div>";
document.getElementById("loading_div").innerhTML = strLoading;
}
使用页:
具体代码如下:
<!DOCTYPE hTML PUBLIC "-//W3C//DTD hTML 4.01 Transitional//EN">
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<script src="LoadingJS/Loading.js" type="text/javascript"></script>
</head>
<body>
<input type="button" name="Button" value="Button" onclick="Loading('显示标签内容', 'LoadingJS/', 20, 100)">
<div id="loading_div" ></div>
</body>
</html>
第二种方法：
JS实现进度显示功能
具体代码如下:
progress.js类文件：
$ = function (id) {
return document.getElementById(id);
}
//文本转JSON字符串
String.prototype.toJson = function () {
if (this == ) {
return null;
}
else {
try {
return eval(( this.replace(/rn/g, rn) ));
}
catch (err) {
}
}
};
//字符格式化方法
String.prototype.format = function () {
var newStr = this;
var reg = null;
for (var i = 0; i < arguments.length; i ) {
reg = RegExp('{' (i) '}', 'gm');
newStr = newStr.replace(reg, arguments[i]);
}
return newStr;
};
//进度条类
function Progress(objId) {
//window.setInterval对象
this.interval = null;
//进度条对象ID
this.id = objId;
//当前进度 起始进度为0
this.progress = 0;
//进度条显示进度的DIV ID
this.progressId = inner this.id;
//进度条边框ID
this.progressFrameId = frame this.id;
//进度条类参数配置
this.config = {
//宽度
width: 150,
//高度
height: 20,
//左边距
left: 0,
//顶部边距
top: 0,
//进度颜色
progressColor: red,
//边框颜色
borderColor: #ccc,
//边框宽度
borderheight: 2,
//进度完成后间隔N秒后隐藏进度条 0为立即隐藏
hiddenSplit:2000
};
}
//进度条类初始化方法
Progress.prototype.init = function () {
//新建进度条边框DIV
var progressdiv = document.createElement(div);
//边框DIV样式
var progressdiv_css_text = position:absolute;width:{0}px;height:{1}px;left:{2}px;top:{3}px;border:{4} {5}px solid;.format
(
this.config.width,
this.config.height,
this.config.left,
this.config.top,
this.config.borderColor,
this.config.borderheight
);
//重置进度为0
this.progress = 0;
//设置边框ID
progressdiv.id = this.progressFrameId;
//设置边框样式
progressdiv.style.cssText = progressdiv_css_text;
//设置进度条hTML
progressdiv.innerhTML = '
'.format(this.progressId, this.config.height, this.config.progressColor);
//加入body中
document.body.appendChild(progressdiv);
};
//进度条隐藏函数
Progress.prototype.hiddenProgress = function () {
document.body.removeChild(document.getElementById(this.progressFrameId));
window.clearInterval(this.interval);
}
//进度结束时触发的函数
Progress.prototype.complete = function () {
window.clearInterval(this.interval);
this.interval = window.setTimeout(this.id .hiddenProgress();,this.config.hiddenSplit);
if (this.completeCallBack) {
this.completeCallBack();
}
}
//进度每次运行后的回调函数
Progress.prototype.callback = function () {
var progressDiv = document.getElementById(this.progressId);
var progressFrameDiv = document.getElementById(this.progressFrameId);
progressDiv.innerhTML = (this.progress*100) %;
progressFrameDiv.title = 上传进度: (this.progress*100) %;
progressDiv.style.width = (this.progress*100) %;
if (this.progress >= 1) {
this.complete();
progressDiv.innerhTML = 文件上传成功!;
}
}
//进度条运行函数。需要用户自己实现
Progress.prototype.run = function () {
alert(请实现 this.id .run方法以实现异步进度请求，回发回请调回调 this.id .callback方法。);
window.clearInterval(this.interval);
}
//启动进度
Progress.prototype.start = function () {
this.init();
this.interval = window.setInterval(this.id .run(), 1000);
}
图片加载进度实时显示
具体代码如下:
<script>
var l=0;
var imgs;
var sum=0;
var imgs=new Array();
function chk(){
l--;
document.getElementById("aa").innerText="" ((sum-l)*100/sum) "%"
if (l==0){
for (var i=0;i<sum;i )
document.body.innerhTML ="<img src='" imgs[i].src "'>"
}
}
if (document.images){
imgs[0]=new Image()
imgs[1]=new Image()
imgs[2]=new Image()
imgs[3]=new Image()
imgs[4]=new Image()
imgs[5]=new Image()
imgs[6]=new Image()
imgs[7]=new Image()
imgs[0].src="/articleimg/2006/08/3859/01.jpg";
imgs[1].src="/articleimg/2006/08/3859/02.jpg";
imgs[2].src="/articleimg/2006/08/3859/03.jpg";
imgs[3].src="/articleimg/2006/08/3859/04.jpg";
imgs[4].src="/articleimg/2006/08/3859/05.jpg";
imgs[5].src="/articleimg/2006/08/3859/06.jpg";
imgs[6].src="/articleimg/2006/08/3859/07.jpg";
imgs[7].src="/articleimg/2006/08/3859/08.jpg";
}
</script>
<body>
<div id="aa">0%</div>
<script>
sum=l=imgs.length;
for (var i=0;i<l;i ){
imgs[i].onload=chk;
imgs[i].onerror=chk;//无论图片是否加载成功，都执行指定方法
}
</script>
</body>
好了关于网站网页设计设计相关的这篇文章就给大家介绍到这里不明白的地方给本站留言。声明，本站内容来源于互联网，如果侵犯了你的权益请联系本站删除。,jQuery应用中特殊字符处理的问题-jquery
于是GOOGLE一查，原来是因为特殊字符的原因。
