摘要:
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Title</title><script> function myfunction() { var t=document.getElementById("demo2 阅读全文
摘要:
<!DOCTYPE html><html><head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head><body> <script>function changeImage(){ element=document.getE 阅读全文
摘要:
HTML定义了网页的内容 CSS定义了网页的布局 JavaScript定义了网页的行为 阅读全文