摘要：
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Title</title></head><body><div id="i1" class="c1">yuan</div><div class="c1">rain</ 阅读全文
摘要：
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Title</title> <style> #i1{ color: red; } </style> <script> function show() { // 查找 阅读全文