<!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>
??<!--當點擊相應按鈕，執(zhí)行相應操作，為按鈕添加相應事件-->
????<input?type="button"?value="改變顏色"onClick="changeColor()">??
????<input?type="button"?value="改變寬高"onClick="changeSize()">
????<input?type="button"?value="隱藏內容"onClick="Hide()">
????<input?type="button"?value="顯示內容"onClick="Show()">
????<input?type="button"?value="取消設置"onClick="offSet()">
??</form>
??<script?type="text/javascript">
???var?txt=document.getElementById("txt");
????function?changeColor(){
????????txt.style.color="red";
????????txt.style.backgroundColor="#ccc";
????}
????function?changeSize(){
????????txt.style.width="300px";
????????txt.style.height="300px";
????}
????function?Hide(){
????????txt.style.display="none";
????}
????function?Show(){
????????txt.style.display="block";
????}
????function?offSet(){
?????var?mas=confirm("你確定要重置所有設置么);
????????if(confirm==true)
????????{
????????txt.removeAttribute('style');
????????}
????}
??</script>
</body>
</html>
2016-11-16
if(mas==true)
2016-11-16
哦if(confirm==true)錯了，var?mas=confirm("你確定要重置所有設置么)差個分號