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                ThinkChat2.0新版上線,更智能更精彩,支持會話、畫圖、視頻、閱讀、搜索等,送10W Token,即刻開啟你的AI之旅 廣告
                prevAll()方法 主要作用是獲取某一個節點的前所有的姐妹元素 ## 語法:(h1姐妹標簽的以上所有元素背景變成紅色) ~~~ $("h1").prevAll().css("background","red"); ~~~ ## 代碼: ~~~ <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <script src="./jquery/jquery-3.2.1.min.js"></script> <title>Title</title> </head> <body> <ul> <li>吃飯</li> <li>睡覺</li> <li>打豆豆</li> <li>玩游戲</li> </ul> <div>我的DIV</div> <h1>我是一級標題</h1> </body> </html> <script type="text/javascript"> $("h1").prevAll().css("background","red"); </script> ~~~
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