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                        /JavaScript入門篇

已經(jīng)通過了，看看吧，說不定對你有所幫助。

走過路過，表要錯過，瞧一瞧，看一看，不要錢。

<!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(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、運動、cookie、正則表達式、ajax等課程。</p>
??</div>
??<form>
??<!--當(dāng)點擊相應(yīng)按鈕，執(zhí)行相應(yīng)操作，為按鈕添加相應(yīng)事件-->
????<input?type="button"?onclick="changeColor()"?value="改變顏色"?>??
????<input?type="button"?onclick="changeSize()"?value="改變寬高"?>
????<input?type="button"?onclick="hideTxt()"?value="隱藏內(nèi)容"?>
????<input?type="button"?onclick="showTxt()"?value="顯示內(nèi)容"?>
????<input?type="button"?onclick="comeBack()"?value="取消設(shè)置"?>
??</form>
??<script?type="text/javascript">
//定義"隨機顏色"的函數(shù)
	function?randomColor()?{
		//16進制方式表示顏色0-F
		var?arrHex?=?["0","1","2","3","4","5","6","7","8","9","A","B","C","D","E","F"];
		var?strHex?=?"#";
		var?index;
		for(var?i?=?0;?i?<?6;?i++)?{
			//取得0-15之間的隨機整數(shù)
			index?=?Math.round(Math.random()?*?15);
			strHex?+=?arrHex[index];
		}
		return?strHex;
	}
//定義"改變顏色"的函數(shù)
	function?changeColor(){
	var?mychar?=?document.getElementById("txt");
	mychar.style.color?=?randomColor();
	}
//定義"改變寬高"的函數(shù)
	function?changeSize(){
	var?mychar?=?document.getElementById("txt");
	mychar.style.width?=?"700px";
	mychar.style.height?=?"450px";
	}
//定義"隱藏內(nèi)容"的函數(shù)
	function?hideTxt(){
	var?mychar?=?document.getElementById("txt");
	mychar.style.display?=?"none";
	}
//定義"顯示內(nèi)容"的函數(shù)
	function?showTxt(){
	var?mychar?=?document.getElementById("txt");
	mychar.style.display?=?"block";
	}

//定義"取消設(shè)置"的函數(shù)
???function?comeBack(){
???var?mystr?=?confirm("取消設(shè)置");
???var?mychar?=?document.getElementById("txt");
???if(mystr?==?true){
???mychar.removeAttribute("style");??
???}
???else{
???}
???
???}
??</script>
</body>
</html>