利用TweenMax針對HTML頁面製作動畫 – jQuery Mobile篇
在Dreamweaver5.5之後多了一個jQuery Mobile面板，主要是利用jQuery來製作一些行動裝置的元素，接下來這篇文章就利用Dreamweaver提供的幾項元素加上TweenMax來製作手機動畫頁面。
因為這篇文章應用到的動畫功能，依舊和前兩篇差不多，所以就直接看範例吧！首先，第一個範例是利用「jQuery 翻轉切換開關」來控制動畫的播放，除了可以從前面的連結看到這個範例之外，也因為這是特別針對行動裝置所設計的案例，大家也可以在手機輸入「goo.gl/LofiK」網址來觀賞，下面是本範例整個網頁的程式碼：
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1.0, maximum-scale=1.0, user-scalabke=no, width=device-width" />
<title>貓咪欣賞</title>
<link href="jquery-mobile/jquery.mobile-1.0.min.css" rel="stylesheet" type="text/css">
<script src="jquery-mobile/jquery-1.6.4.min.js" type="text/javascript"></script>
<script src="jquery-mobile/jquery.mobile-1.0.min.js" type="text/javascript"></script>
<script src="src/minified/TweenMax.min.js"></script>
<style type="text/css">
* {
margin: 0px;
padding: 0px;
}
#photo {
text-align: center;
}
#selector {
text-align: center;
width: 50%;
margin-left: auto;
margin-right: auto;
}
</style>
<script language="javascript">
var playNo = 1; /* 定義目前播放張數變數 */
function photoPlay() {
var controler = document.getElementById("flipswitch");
if (controler.options[controler.selectedIndex].value == "on") {
clock = setInterval(timer, 5000);
} else {
clearInterval(clock);
} /* 設定每五秒執行timer函數 */
function timer() {
var pic = document.getElementById("photo"); /* 利用pic紀錄畫面中ID為photo的元素 */
playNo++; /* 增加張數 */
if (playNo > 19) {
playNo = 1;
} /* 設定超過圖片張數後從頭播放 */
TweenMax.to(pic, 1, {
css: {
alpha: 0
},
ease: Expo.easeIn,
onComplete: function () {
pic.innerHTML = "<img src=photo/photo" + playNo + ".jpg width=300 height=200>";
TweenMax.to(pic, 1, {
css: {
alpha: 1
},
ease: Expo.easeOut
});
}
});
}
}
</script>
</head>
<body onLoad="photoPlay()">
<div data-role="page" id="page">
<div data-role="header">
<h1>貓咪欣賞</h1>
</div>
<div data-role="content">
<div id="photo"><img src="photo/photo1.jpg"></div>
<div data-role="fieldcontain" id="selector"> <select name="flipswitch" id="flipswitch"
onChange="photoPlay()" data-role="slider">
<option value="off">關閉</option>
<option value="on" selected>開啟</option>
</select> </div>
</div>
<div data-role="footer">
<h4>©2012 Copyright Stanley Ma Cloud Research.</h4>
</div>
</div>
</body>
</html>
接下來的第二個範例在程式上面會比較複雜，因為想要加強上一個範例的互動性，所以在同樣的範例上面增加「上一張」、「下一張」與「播放控制」的功能，可在手機輸入「goo.gl/GyAVt」網址觀賞，如果你仔細看的話，會發現這個範例中呼叫網頁元素的語法有改變，其實既然是利用jQuery來製作，本來就可以利用jQuery所提供呼叫網頁元素的指令來製作會比較方便，總之是因為有了下面這行語法，才可以利用這種方式來呼叫的喔！
<script src="jquery-mobile/jquery-1.6.4.min.js" type="text/javascript"></script>
下面是本範例整個網頁的程式碼：
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1.0, maximum-scale=1.0, user-scalabke=no, width=device-width" />
<title>貓咪欣賞</title>
<style type="text/css">
* {
margin: 0px;
padding: 0px;
}
#photo {
text-align: center;
}
#selector {
text-align: center;
width: 50%;
margin-left: auto;
margin-right: auto;
}
#count {
text-align: center;
width: 50%;
margin-left: auto;
margin-right: auto;
font-size: 12px;
}
</style>
<link href="jquery-mobile/jquery.mobile-1.0.min.css" rel="stylesheet" type="text/css">
<script src="jquery-mobile/jquery-1.6.4.min.js" type="text/javascript"></script>
<script src="jquery-mobile/jquery.mobile-1.0.min.js" type="text/javascript"></script>
<script src="src/minified/TweenMax.min.js"></script>
<script language="javascript">
var playing = 1; /* 偵測目前是否為播放中的變數（1為播放0為暫停） */
var playNo = 1; /* 定義目前播放張數變數 */ /* 執行計時器 */
function photoPlay() {
clock = setInterval(timer, 5000);
} /* 計時執行函數 */
function timer() {
playNo++; /* 增加張數 */
checkPlayNo() /* 呼叫檢查張數是否有誤的函數 */ photoSlide(); /* 呼叫動畫切換照片的函數 */
} /* 動畫切換照片的函數 */
function photoSlide() {
var pic = $("#photo"); /* 利用pic紀錄畫面中ID為photo的元素 */
TweenMax.to(pic, 0.5, {
css: {
alpha: 0
},
ease: Expo.easeIn,
onComplete: function () {
pic.html("<img src=photo/photo" + playNo + ".jpg width=300 height=200>");
TweenMax.to(pic, 1, {
css: {
alpha: 1
},
ease: Expo.easeOut
});
}
});
$("#count").html(playNo + " / 19"); /* 更換顯示張數的文字 */
} /* 檢查張數是否有誤的函數 */
function checkPlayNo() {
if (playNo > 19) {
playNo = 1;
} else if (playNo < 1) {
playNo = 19;
}
} /* 前往上一張的函數 */
function prevFn() {
clearInterval(clock);
playNo--;
checkPlayNo() photoSlide();
photoPlay();
} /* 前往下一張的函數 */
function nextFn() {
clearInterval(clock);
playNo++;
checkPlayNo() photoSlide();
photoPlay();
} /* 播放控制函數 */
function controlFn() {
if (playing == 1) {
playing = 0;
$("#controlBtn").html("播放") clearInterval(clock);
} else if (playing == 0) {
playing = 1;
$("#controlBtn").html("暫停") clock = setInterval(timer, 5000);
}
}
</script>
</head>
<body onLoad="photoPlay()">
<div data-role="page" id="page">
<div data-role="header">
<h1>貓咪欣賞</h1>
</div>
<div data-role="content">
<div id="photo"><img src="photo/photo1.jpg"></div>
<div data-role="controlgroup" data-type="horizontal" id="selector"><a href="#" data-role="button"
id="prevBtn" onClick="prevFn()">上一張</a><a href="#" data-role="button" onClick="controlFn()"><label
id="controlBtn">暫停</label></a><a href="#" data-role="button" onClick="nextFn()">下一張</a></div>
<div id="count">1 / 19</div>
</div>
<div data-role="footer">
<h4>©2012 Copyright Stanley Ma Cloud Research.</h4>
</div>
</div>
</body>
</html>
希望大家看過這幾篇「利用TweenMax針對HTML頁面製作動畫」的範例之後，可以更順利的創作出自己的網頁。
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