How to replace elements with jquery

In web development, it is often necessary to dynamically modify certain elements on the page. As a popular JavaScript library, jQuery provides some convenient and easy-to-use methods for replacing elements. This article will introduce several of them.

1. Replace elements with replaceWith()

The replaceWith() method can replace the selected element with the specified content or element. The usage is as follows:

$(selector).replaceWith(newContent)

Among them, selector represents the selected element, and newContent represents the replaced content or element.

For example, replace the element with id old_div with a new HTML code:

$("#old_div").replaceWith("<div id='new_div'>这是一个新的div</div>");

2. Replace the element content with html()

html( ) method can set or get the innerHTML of the selected element. It can be used to replace the content of an element. The usage is as follows:

$(selector).html(newContent)

Among them, selector represents the selected element, and newContent represents the replaced content.

For example, replace the content of the element with id old_p with a new piece of HTML code:

$("#old_p").html("<em>这是一段新的段落</em>");

3. Replace the element text with text()

The text() method can set or get the text content of the selected element. It can be used to replace text within an element. The usage is as follows:

$(selector).text(newContent)

Among them, selector represents the selected element, and newContent represents the replaced text content.

For example, replace the text of the element with id old_span with a new string:

$("#old_span").text("这是一个新的span");

4. Replace the element position with appendTo()

The appendTo() method can insert the specified element at the end of the selected element, thereby replacing the element's position. The usage is as follows:

$(newElement).appendTo(selector)

Among them, newElement represents the new element to be inserted, and selector represents the selected element.

For example, insert a new piece of HTML code at the end of the element with the id old_div:

$("<div>这是新元素</div>").appendTo("#old_div");

Summary

This article introduces several jQuery methods of replacing elements. Includes:

• Replace element with replaceWith()
• Replace element content with html()
• Replace element text with text()
• Use appendTo() replaces the element position

In actual development, choosing the appropriate method according to needs can quickly and easily complete the dynamic modification of elements.

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