標籤：
提供一個JS參考手冊入口：http://www.w3school.com.cn/jsref/index.asp。
JavaScript 最常用於圖片操作、表單資料處理以及內容動態更新。
<!DOCTYPE html><html><head>?<meta?charset="utf-8">?<title>菜鳥教程(runoob.com)</title>?</head><body><h1>我的第一個 JavaScript </h1><p id="demo">JavaScript 可以觸發事件，就像按鈕點擊。</p><script>function myFunction1(){ document.getElementById("demo").innerHTML="Hello JavaScript!";}</script><button type="button" onclick="myFunction1()">點擊這裡</button><h2>我的第二段 JavaScript</h2><p id="demo2">JavaScript 能改變 HTML 元素的樣式。</p><script>function myFunction2(){ x=document.getElementById("demo2") // 找到元素 x.style.color="#ff0000"; // 改變樣式}</script><button type="button" onclick="myFunction2()">點擊這裡</button></body></html>
<!DOCTYPE html><html><head> <meta charset="utf-8"> <title>菜鳥教程(runoob.com)(runoob.com)</title> </head><body> <script>function changeImage(){ element=document.getElementById(‘myimage‘) if (element.src.match("bulbon")) <!-- JS指令碼擷取元素的src屬性(字串型), 與“bulbon”匹配 --> { element.src="pic_bulboff.png"; } else { element.src="pic_bulbon.png"; }}</script><img id="myimage" onclick="changeImage()"src="pic_bulboff.png" width="100" height="180"><p>點擊燈泡就可以開啟或關閉這盞燈</p> </body></html>
HTML 內嵌JS指令碼
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