How to implement pop-up box using jquery

In front-end development, pop-up boxes are a frequently used function. With the popularity of jQuery, using jQuery to create pop-up boxes has become the first choice of many developers. In this article, we will introduce how to use jQuery to implement a popup box.

1. Introduce jQuery

First, we need to introduce jQuery into the web page. You can use the following code in the tag of the head:

<script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.6.0/jquery.min.js"></script>

This will load the latest version of jQuery files from the CDN (Content Delivery Network), or you can download jQuery and put it locally, and then Import jQuery using a local file path.

2. Basic pop-up box

jQuery provides a method to easily create a basic pop-up box. This method is called .alert() . The code is as follows:

$(document).ready(function() {
  $("#btn-alert").click(function() {
    alert("Hello World!");
  });
});

In this code, we use jQuery's ready() method to ensure that the code is executed after the page is loaded. Then, we bind a click event to the button #btn-alert. When the button is clicked, a dialog box will pop up with the text "Hello World!".

3. Custom pop-up box

If you want a more flexible and customized pop-up box, you can use the dialog box plug-in provided by jQuery UI. This plug-in allows you to create a custom pop-up box in a web page, and you can easily customize the style and behavior of the pop-up box. Here is a simple example:

  
  
  
  <script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
  
  


  弹出框

  

    
这是一段通过 jQuery UI Dialog 创建的自定义弹出框。
  

  

In this example, we use the jQuery UI dialog plugin. We introduced the CSS file and JavaScript file of jQuery UI in the head, and defined a div element with class mydialog as the container of the pop-up box. In this div, we add a piece of text as the content of the popup box.

In JavaScript, when the button is clicked, we use the $("#mydialog").dialog() method to create a pop-up box. We also use the show and hide parameters to customize the display and hiding effects of the pop-up box.

4. Summary

In this article, we introduced how to use jQuery to implement pop-up boxes. We first used jQuery's alert() method to create a basic popup box, and then introduced how to create a custom popup box by using jQuery UI's dialog plug-in. Using jQuery to implement pop-up boxes can improve our user experience and make our web pages more interactive.

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