### 概述: - children() 是,用於獲取每個匹配元素的所有直接子元素。這個方法返回一個包含所有直接子元素的 jQuery 物件。 ### 基本語法: ```js $(selector).children() ``` ### 範例: - HTML: ```html <div class="container"> <p>Paragraph 1</p> <div class="inner"> <p>Paragraph 2</p> <span>Span Element</span> </div> </div> ``` - JavaScript & jQuery: - 指定當下元素後,針對該元素之子元素給予顏色樣式。 ```js $(document).ready(function () { $(".container").children().css("color", "red"); }); ```  ### 進階使用: - 也可以通過在 children() 中傳入一個選擇器,來只獲取符合條件的子元素: ```js $(document).ready(function () { $(".container").children().css("color", "red"); // 指定特定類別 $(".inner").children("span").css("color", "blue"); }); ``` 
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