操作元素之修改元素屬性
阿新 • • 發佈:2021-01-17
技術標籤:JavaScript-DOMjsjavascript
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
img {
width:300px;
}
</style>
</head>
<body>
<button id="ldh">劉德華</button>
<button id="zxy">張學友</button><br/>
<img src="0xdb-fyscsmv6110898.jpg" title="張學友"/>
<script >
//修改元素屬性
var ldh = document.getElementById('ldh');
var zxy = document.getElementById('zxy');
var img = document.querySelector('img');
ldh.onclick = function() {
img.src = 'e189ef4d97fed10ece199c6e517cbe77.jpg';
img.title = '劉德華';
}
zxy.onclick = function() {
img.src = '0xdb-fyscsmv6110898.jpg';
img.title = '張學友';
}
</script>
</body>
</html>