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Javascript动态伸缩+淡出淡入

　　发布时间：2024-06-22 02:57:21　

标签：Javascript,动态伸缩

//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>

<!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">&amp;nbsp;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>


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