為什么點(diǎn)擊按鈕沒反應(yīng)？
<!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(yè)添加動(dòng)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(duì)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(duì)象、運(yùn)動(dòng)、cookie、正則表達(dá)式、ajax等課程。</p>
? </div>
? <form>
? <!--當(dāng)點(diǎn)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" value="改變顏色" onclink="gcolor()">??
? ? <input type="button" value="改變寬高" onclink="gwidth()">
? ? <input type="button" value="隱藏內(nèi)容" onclink="ywork()">
? ? <input type="button" value="顯示內(nèi)容" onclink="xwork()">
? ? <input type="button" value="取消設(shè)置"? onclink="huanyuan()">?
? </form>
? <script type="text/javascript">
//定義"改變顏色"的函數(shù)
var mychar1=document.getElementById("con")
var mychar2=document.getElementById("txt")
function gcolor() {
? ? mychar1.style.color="red"
? ? mychar2.style.color="blue"
}?
//定義"改變寬高"的函數(shù)
function gwidth(){
? ? mychar2.style.width="400px"
}
//定義"隱藏內(nèi)容"的函數(shù)
function ywork(){
? ? mychar2.style.display="none"
}
//定義"顯示內(nèi)容"的函數(shù)
function xwork(){
? ?
? ? mychar2.style.display="block"
? ??
}
//定義"取消設(shè)置"的函數(shù)
function huanyuan(){
? ? var message=confirm("你確定要重置嘛？")
? ? if(message==true){
? ? ? ? ? ? txt.removeAttribute('style');}
}
? </script>
</body>
</html>
2021-07-29
<!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(yè)添加動(dòng)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(duì)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(duì)象、運(yùn)動(dòng)、cookie、正則表達(dá)式、ajax等課程。</p>
????</div>
????<form>
????????<!--當(dāng)點(diǎn)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"?value="改變顏色"?onclick="gcolor()">
????????<input?type="button"?value="改變寬高"?onclick="gwidth()">
????????<input?type="button"?value="隱藏內(nèi)容"?onclick="ywork()">
????????<input?type="button"?value="顯示內(nèi)容"?onclick="xwork()">
????????<input?type="button"?value="取消設(shè)置"?onclick="huanyuan()">
????</form>
????<script?type="text/javascript">
????????//定義"改變顏色"的函數(shù)
????????var?mychar1?=?document.getElementById("con")
????????var?mychar2?=?document.getElementById("txt")
????????function?gcolor()?{
????????????mychar1.style.color?=?"red"
????????????mychar2.style.backgroundColor?=?"blue"
????????}
????????//定義"改變寬高"的函數(shù)
????????function?gwidth()?{
????????????mychar2.style.width?=?"400px"
????????}
????????//定義"隱藏內(nèi)容"的函數(shù)
????????function?ywork()?{
????????????mychar2.style.display?=?"none"
????????}
????????//定義"顯示內(nèi)容"的函數(shù)
????????function?xwork()?{
????????????mychar2.style.display?=?"block"
????????}
????????//定義"取消設(shè)置"的函數(shù)
????????function?huanyuan()?{
????????????var?message?=?confirm("你確定要重置嘛？")
????????????if?(message?==?true)?{
????????????????txt.removeAttribute('style');
????????????}
????????}
????</script>
</body>
</html>
2021-07-29
onclick
打錯(cuò)了