How to find div sub-elements under div in jquery

jQuery is a powerful toolset for JavaScript programming that enables developers to write simple, efficient code. jQuery provides many ways to traverse the DOM tree, one common task is to find div elements below a div.

To achieve this task, jQuery provides many selectors and filters. Among them, the most commonly used selectors are descendant selector and child element selector.

The descendant selector uses the space character to connect the two selectors, for example:

//查找所有 div 元素的前一个 span 元素
$("div span");

The child element selector uses the greater than symbol (>) to connect the two selectors, for example:

//查找所有父元素为 div 的直接子元素的 span 元素
$("div > span");

In addition to these basic selectors, jQuery also provides some other practical selectors, such as: first, :last, :eq(), etc., which can be used in the DOM tree as needed. Find elements.

In addition to using selectors, jQuery can also further filter found elements through filters. Filters can also select based on the attributes, status, and position of elements, for example:

//查找具有 class 为 "inner" 的 div 元素
$("div").filter(".inner");

//查找第一个 div 元素，其索引值为 0
$("div").eq(0);

//查找最后一个 div 元素
$("div").last();

In short, jQuery provides a series of powerful selectors and filters that can help developers efficiently find elements in the DOM tree Elements. If you need to find div elements below a div, you can use the descendant or child selectors, or use filters to further filter the elements. By constantly trying it in practice, you will gradually master the powerful functions of jQuery and write more concise and efficient code.

The above is the detailed content of How to find div sub-elements under div in jquery. For more information, please follow other related articles on the PHP Chinese website!