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                        /JavaScript入門篇

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<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" Content="text/html; charset=utf-8" />
<title>javascript</title>
<style type="text/css">
body{font-size:12px;}
#txt{
??? height:400px;
??? width:600px;
?? ?border:#333 solid 1px;
?? ?padding:5px;}
p{
?? ?line-height:18px;
?? ?text-indent:2em;}
</style>
</head>
<body>
? <h2 id="con">JavaScript課程</H2>
? <div id="txt">
???? <h5>JavaScript為網(wǎng)頁添加動態(tài)效果并實現(xiàn)與用戶交互的功能。</h5>
??????? <p>1. JavaScript入門篇，讓不懂JS的你，快速了解JS。</p>
??????? <p>2. JavaScript進階篇，讓你掌握JS的基礎語法、函數(shù)、數(shù)組、事件、內(nèi)置對象、BOM瀏覽器、DOM操作。</p>
??????? <p>3. 學完以上兩門基礎課后，在深入學習JavaScript的變量作用域、事件、對象、運動、cookie、正則表達式、ajax等課程。</p>
? </div>
? <form>
? 
??? <input type="button" value="改變顏色" onclick="changeColor()" /> ?
??? <input type="button" value="改變寬高" onclick="changeWH()" />
??? <input type="button" value="隱藏內(nèi)容" onclick="hide()" />
??? <input type="button" value="顯示內(nèi)容" onclick="see()" />
??? <input type="button" value="取消設置" onclick="rec()" />
? </form>
? <script type="text/javascript">

//定義"改變顏色"的函數(shù)
function changeColor(){
??? var mytxt = document.getElementById("txt");
??? mytxt.style.color = "red";
??? mytxt.style.backgroundColor = "#CCC";
}

//定義"改變寬高"的函數(shù)
function changeWH(){
??? var myWH = document.getElementById("txt");
??? myWH.style.width = "700px";
??? myWH.style.height = "500px";
}

//定義"隱藏內(nèi)容"的函數(shù)
function hide(){
??? var myhide = document.getElementById("txt");
??? myhide.style.display = "none";
}

//定義"顯示內(nèi)容"的函數(shù)
function see(){
??? var mysee = document.getElementById("txt");
??? mysee.style.display = "block";
}

//定義"取消設置"的函數(shù)
function rec(){
??? var mymessage = confirm("是否取消設置？");
??? if(mymessage==true)
??? {
??????? document.getElementById("con");
??????? document.getElementById("txt");
??? }
}

? </script>
</body>
</html>