                        課程
                    
                        /前端開發(fā)
                        
                            /JavaScript
                        
                        /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(shí)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(jìn)階篇，讓你掌握J(rèn)S的基礎(chǔ)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(xué)完以上兩門基礎(chǔ)課后，在深入學(xué)習(xí)JavaScript的變量作用域、事件、對象、運(yùn)動、cookie、正則表達(dá)式、ajax等課程。</p>
? </div>
? <form>
? 
??? <input type="button" value="改變顏色" onclick="change()">?
??? <input type="button" value="改變寬高" onclick="changehw()">
??? <input type="button" value="隱藏內(nèi)容" onclick="hide()">
??? <input type="button" value="顯示內(nèi)容" onclick="show()">
??? <input type="button" value="取消設(shè)置" onclick="reset()">
? </form>
? <script type="text/javascript">
//定義"改變顏色"的函數(shù)
function change(){
var myc = document.getElementById("txt");
? myc.style.color = "green";
? myc.style.backgroungColor = "pink";
}

//定義"改變寬高"的函數(shù)
function changehw(){
??? var mychar = document.getElementById("txt");
??? mychar.style.width = "300px";
??? mychar.style.height = "200px";
}

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

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

//定義"取消設(shè)置"的函數(shù)
function reset(){
??? var mychar = confirm("是否取消設(shè)置？");
??? if(mychar == true)
??? mychar.removeAttribute("style");
}
? </script>
</body>
</html>