<!DOCTYPE html> <html> <head> <style> .tabcontent { display: none; } .tabcontent img { width: 200px; height: 200px; object-fit: cover; margin: 10px; } .tab { overflow: hidden; margin: 10px 0; } .tab button { background-color: #f1f1f1; float: left; border: none; outline: none; cursor: pointer; padding: 10px 20px; transition: background-color 0.3s ease; } .tab button:hover { background-color: #ddd; } .tab button.active { background-color: #ccc; } </style> </head> <body> <div class="tab"> <button class="tablinks" onclick="openTab(event, 'page1')" id="defaultOpen">Page 1</button> <button class="tablinks" onclick="openTab(event, 'page2')">Page 2</button> </div> <div id="page1" class="tabcontent"> <img src="image1.jpg"> <img src="image2.jpg"> <img src="image3.jpg"> <img src="image4.jpg"> <img src="image5.jpg"> </div> <div id="page2" class="tabcontent"> <img src="image6.jpg"> <img src="image7.jpg"> <img src="image8.jpg"> <img src="image9.jpg"> <img src="image10.jpg"> </div> <script> function openTab(evt, tabName) { var i, tabcontent, tablinks; tabcontent = document.getElementsByClassName("tabcontent"); for (i = 0; i < tabcontent.length; i++) { tabcontent[i].style.display = "none"; } tablinks = document.getElementsByClassName("tablinks"); for (i = 0; i < tablinks.length; i++) { tablinks[i].className = tablinks[i].className.replace(" active", ""); } document.getElementById(tabName).style.display = "block"; evt.currentTarget.className += " active"; } document.getElementById("defaultOpen").click(); </script> </body> </html>优化js代码
时间: 2024-01-03 11:33:21 浏览: 29
你的代码已经很简洁了,不过我可以为你进行一些优化,减少重复代码的使用。以下是优化后的代码:
```html
<!DOCTYPE html>
<html>
<head>
<style>
.tabcontent {
display: none;
}
.tabcontent img {
width: 200px;
height: 200px;
object-fit: cover;
margin: 10px;
}
.tab {
overflow: hidden;
margin: 10px 0;
}
.tab button {
background-color: #f1f1f1;
float: left;
border: none;
outline: none;
cursor: pointer;
padding: 10px 20px;
transition: background-color 0.3s ease;
}
.tab button:hover {
background-color: #ddd;
}
.tab button.active {
background-color: #ccc;
}
</style>
</head>
<body>
<div class="tab">
<button class="tablinks" onclick="openTab(event, 'page1')" id="defaultOpen">Page 1</button>
<button class="tablinks" onclick="openTab(event, 'page2')">Page 2</button>
</div>
<div id="page1" class="tabcontent">
<img src="image1.jpg">
<img src="image2.jpg">
<img src="image3.jpg">
<img src="image4.jpg">
<img src="image5.jpg">
</div>
<div id="page2" class="tabcontent">
<img src="image6.jpg">
<img src="image7.jpg">
<img src="image8.jpg">
<img src="image9.jpg">
<img src="image10.jpg">
</div>
<script>
function openTab(evt, tabName) {
var i, tabcontent, tablinks;
tabcontent = document.getElementsByClassName("tabcontent");
tablinks = document.getElementsByClassName("tablinks");
for (i = 0; i < tabcontent.length; i++) {
tabcontent[i].style.display = "none";
tablinks[i].className = tablinks[i].className.replace(" active", "");
}
document.getElementById(tabName).style.display = "block";
evt.currentTarget.className += " active";
}
document.getElementById("defaultOpen").click();
</script>
</body>
</html>
```
这个优化后的代码使用了一个循环,并将获取元素的代码提前,避免了重复的获取操作。这样代码更加简洁和高效。希望对你有帮助!