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How to add a parent section in jquery

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Release： 2023-05-11 19:16:35

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In selectors and DOM operations, jQuery, as one of the most popular JavaScript libraries, is widely used in front-end development and web page interaction. In jQuery, if you need to add a parent node to an existing element, you can use the following code snippet:

//创建父节点
var parent = $("<div></div>");

//选择子节点
var child = $("p");

//将子节点添加到父节点中
child.wrap(parent);

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In the above code, a

element is first created as the parent node to be added. Then use jQuery's selector to select the child node to be added to the parent node (here a

element is selected). Finally use the .wrap() method to add the child node to the parent node.

In addition, jQuery also provides some other methods to add parent nodes. For details, please refer to the following code snippet:

//创建父节点
var parent = $("<div></div>");

//选择子节点
var child = $("p");

//将父节点插入到子节点的前面
child.before(parent);

//将父节点插入到子节点的后面
child.after(parent);

//将父节点插入到子节点的内部
child.append(parent);

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In the above code, the .before() method inserts the element into the selector In front of the selected element, the .after() method inserts an element after the element selected by the selector, while the .append() method inserts a new element at the internal end of the element selected by the selector. These methods can also be used together to implement more complex DOM operations.

It should be noted that before performing these operations of adding parent nodes, you need to ensure that one or more child nodes have been selected, otherwise these operations will have no effect. At the same time, the CSS style may need to be readjusted after adding the parent node to make the page layout consistent.

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