Javascript动态伸缩+淡出淡入- Javascript

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Javascript: 动态生成select选项全接触; 不刷新页面动态更新select选项，实现两个select相互操作; 网页输入框日期型有效性判定一网打尽; 实用Javascript函数之一(自动将输入文本框中的内容转换成大写字符); 实用Javascript函数之二(自动将输入文本框中的内容转换成小写字符); 实用Javascript函数之三(限制文本输入框中只能输入数字\"0\"到\"9\"); 实用Javascript函数之四(用于对sString字符串进行前空格截除); 实用Javascript函数之五(用于对sString字符串进行后空格截除); 实用Javascript函数之六(截除字符串前后空格); 如何使用交替的滚动标题; 采用DOM模型时创建一个Select节点后，要删除option项的解决方法; javascript函数速查; 利用JavaScript和正则表达式进行丰富的日期判断（给其它项目组的代码，有比较好的编程风格和注释）; 关于字符串的几个有用函数; FileSystemObject 的例子（处理驱动器、文件夹、文件）; 用JScript实现VB.Net,C#的[委托Delegate]:; 得到固定字符位置的函数; IE NC通用的藏鼠标右键一法; Menu; foolpot2001菜单

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Javascript动态伸缩+淡出淡入

出处:互联网 整理: 软晨网（RuanChen.com） 发布: 2009-09-12 浏览: 165 ::

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javascript 特殊字符串 javascript URL锚点取值方法

一种不错代码应用实例，大家可以根据这个代码，拓宽出更好的代码 //interval变量
var inl = [];
//原始透明度
var opa = 100;
//判断浏览器
var ie = navigator.appName == "Microsoft Internet Explorer" ? "Microsoft Internet Explorer" : "";
//缩小和打开按纽
function gogo() {
speed = 50;
var mode;
//利用方块的display来判定是否缩小或放大
if(!$('tmp').style.display) {
mode = "-";
//display是正常的话设置interval缩小
inl['suotu'] = setInterval("suodi('-')", 10);
}else {
mode = "+";
//display是none的话先把display改回去正常，再设置interval放大
$('tmp').style.display = "";
inl['suotu'] = setInterval("suodi('+')", 10);
}
clearInterval(inl['dcdr']);
inl['dcdr'] = setInterval("dcdr('" + mode + "')", 10);
}
//淡出淡入
function dcdr(op) {
//获取透明度
opa = define(op, opa, 4, 0, 100);
//更新透明度
ie ? $('tmp').style.filter = "alpha(opacity=" + opa + ")" : $('tmp').style.opacity = opa / 100;
//如果透明度小于等于0或大于等于100
if(opa <= 0 || opa >= 100) {
//停止interval
clearInterval(inl['dcdr']);
}
}
function define(id, a, b, a2, a3) {
if(id == "-") {
a -= b;
if(a <= a2) {
a = a2;
}
}else {
a += b;
if(a >= a3) {
a = a3;
}
}
return a;
}
//缩小或放大
function suodi(opt) {
//速度大于1的话继续除以s，否则等于1
speed = speed > 1 ? speed * 0.862 : 1;
//获取高度
var hw = define(opt, $('tmp').clientHeight, speed, speed, 300);
//设定高度和宽度
$('tmp').style.height = hw + "px";
$('tmp').style.width = hw + "px";
//假如方块的高度小于速度
if($('tmp').clientHeight <= speed) {
//隐藏方块
$('tmp').style.display = "none";
//按钮名字改为"打开"
$('anniu').value = "打开";
//关闭interval
clearInterval(inl['suotu']);
}else if($('tmp').clientWidth >= 300) {
//按钮名字改为"缩小"
$('anniu').value = "缩小";
//关闭interval
clearInterval(inl['suotu']);
}
}
//简化getElementById为$
var $ = function($) {
return document.getElementById($);
}
//interval变量
var inl = [];
//原始透明度
var opa = 100;
//判断浏览器
var ie = navigator.appName == "Microsoft Internet Explorer" ? "Microsoft Internet Explorer" : "";
//缩小和打开按纽
function gogo() {
speed = 50;
var mode;
//利用方块的display来判定是否缩小或放大
if(!$('tmp').style.display) {
mode = "-";
//display是正常的话设置interval缩小
inl['suotu'] = setInterval("suodi('-')", 10);
}else {
mode = "+";
//display是none的话先把display改回去正常，再设置interval放大
$('tmp').style.display = "";
inl['suotu'] = setInterval("suodi('+')", 10);
}
clearInterval(inl['dcdr']);
inl['dcdr'] = setInterval("dcdr('" + mode + "')", 10);
}
//淡出淡入
function dcdr(op) {
//获取透明度
opa = define(op, opa, 4, 0, 100);
//更新透明度
ie ? $('tmp').style.filter = "alpha(opacity=" + opa + ")" : $('tmp').style.opacity = opa / 100;
//如果透明度小于等于0或大于等于100
if(opa <= 0 || opa >= 100) {
//停止interval
clearInterval(inl['dcdr']);
}
}
function define(id, a, b, a2, a3) {
if(id == "-") {
a -= b;
if(a <= a2) {
a = a2;
}
}else {
a += b;
if(a >= a3) {
a = a3;
}
}
return a;
}
//缩小或放大
function suodi(opt) {
//速度大于1的话继续除以s，否则等于1
speed = speed > 1 ? speed * 0.862 : 1;
//获取高度
var hw = define(opt, $('tmp').clientHeight, speed, speed, 300);
//设定高度和宽度
$('tmp').style.height = hw + "px";
$('tmp').style.width = hw + "px";
//假如方块的高度小于速度
if($('tmp').clientHeight <= speed) {
//隐藏方块
$('tmp').style.display = "none";
//按钮名字改为"打开"
$('anniu').value = "打开";
//关闭interval
clearInterval(inl['suotu']);
}else if($('tmp').clientWidth >= 300) {
//按钮名字改为"缩小"
$('anniu').value = "缩小";
//关闭interval
clearInterval(inl['suotu']);
}
}
//简化getElementById为$
var $ = function($) {
return document.getElementById($);
}
<body style="margin:0; padding:100px 150px" style="margin:0; padding:100px 150px">
<table style="border:1px solid #ccc" style="border:1px solid #ccc">
<tr>
<td><div style="position:absolute; font-family:'微软雅黑'; font-size:13px" style="position:absolute; font-family:'微软雅黑'; font-size:13px"> 演示</div><div id="tmp" style="height:300px; width:300px; background:black"></div></td>
</tr>
<tr>
<td align="center" style="padding-top:20px" style="padding-top:20px">
<input id="anniu" type="button" value="缩小" style="font-family:'微软雅黑'; font-size:12px; font-weight:bold; border:1px solid #ccc" style="font-family:'微软雅黑'; font-size:12px; font-weight:bold; border:1px solid #ccc" onfocus="this.blur()" onclick="gogo()"/>
</td>
</tr>
</table>
</body>

点击运行可以看到效果:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>缩图</title>
</head>
<script type="text/javascript" language="javascript" charset="gb2312">
//interval变量
var inl = [];
//原始透明度
var opa = 100;
//判断浏览器
var ie = navigator.appName == "Microsoft Internet Explorer" ? "Microsoft Internet Explorer" : "";
//缩小和打开按纽
function gogo() {
speed = 50; var mode;
//利用方块的display来判定是否缩小或放大
if(!$('tmp').style.display) { mode = "-"; //display是正常的话设置interval缩小
inl['suotu'] = setInterval("suodi('-')", 10);
}else { mode = "+"; //display是none的话先把display改回去正常，再设置interval放大
$('tmp').style.display = "";
inl['suotu'] = setInterval("suodi('+')", 10);
} clearInterval(inl['dcdr']); inl['dcdr'] = setInterval("dcdr('" + mode + "')", 10);
}
//淡出淡入
function dcdr(op) { //获取透明度 opa = define(op, opa, 4, 0, 100); //更新透明度 ie ? $('tmp').style.filter = "alpha(opacity=" + opa + ")" : $('tmp').style.opacity = opa / 100; //如果透明度小于等于0或大于等于100 if(opa <= 0 || opa >= 100) { //停止interval clearInterval(inl['dcdr']); }
}
function define(id, a, b, a2, a3) { if(id == "-") { a -= b; if(a <= a2) { a = a2; } }else { a += b; if(a >= a3) { a = a3; } } return a;
}
//缩小或放大
function suodi(opt) { //速度大于1的话继续除以s，否则等于1
speed = speed > 1 ? speed * 0.862 : 1; //获取高度 var hw = define(opt, $('tmp').clientHeight, speed, speed, 300);
//设定高度和宽度
$('tmp').style.height = hw + "px";
$('tmp').style.width = hw + "px"; //假如方块的高度小于速度
if($('tmp').clientHeight <= speed) { //隐藏方块
$('tmp').style.display = "none"; //按钮名字改为"打开"
$('anniu').value = "打开"; //关闭interval
clearInterval(inl['suotu']);
}else if($('tmp').clientWidth >= 300) { //按钮名字改为"缩小" $('anniu').value = "缩小"; //关闭interval clearInterval(inl['suotu']); }
}
//简化getElementById为$
var $ = function($) {
return document.getElementById($);
}
</script>
<body style="margin:0; padding:100px 150px">
<table style="border:1px solid #ccc">
<tr>
<td><div style="position:absolute; font-family:'微软雅黑'; font-size:13px"> 演示</div><div id="tmp" style="height:300px; width:300px; background:black"></div></td>
</tr>
<tr>
<td align="center" style="padding-top:20px">
<input id="anniu" type="button" value="缩小" style="font-family:'微软雅黑'; font-size:12px; font-weight:bold; border:1px solid #ccc" onfocus="this.blur()" onclick="gogo()"/>
</td>
</tr>
</table>
</body>
</html>

[Ctrl+A 全选提示:你可先修改部分代码,再按运行]

javascript 特殊字符串 javascript URL锚点取值方法

Javascript动态伸缩+淡出淡入

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