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jquery deletes the displayed pop-up box

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Release： 2023-05-28 11:43:37

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As web applications become more and more popular, the way of interacting with users is also constantly changing. Pop-ups are a reliable way to prompt the user with something they need to pay attention to, ask the user whether to perform an action, or display a success message. However, when the popup layer is no longer needed, it is best to remove it from the page to avoid visual confusion for users.

In this article, we will introduce how to use jQuery to remove the displayed popup box. jQuery is a widely used JavaScript library that has become one of the preferred tools for developers.

Step 1: Add HTML and CSS

First, we need to add HTML and CSS to the page to create the popup box. In this example, we will create a simple div that will serve as our popover.

The HTML code looks like this:

<div class="popup">
  <h2>提示</h2>
  <p>欢迎来到我的网站！</p>
  <button class="close">关闭</button>
</div>

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We also need to add CSS styles to this div to center it on the page and make it look like a popup layer.

The CSS code looks like this:

.popup {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: #fff;
  padding: 20px;
  box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.5);
  z-index: 9999;
}

.popup h2 {
  font-size: 18px;
  margin-top: 0;
}

.popup p {
  margin-bottom: 0;
}

.close {
  background-color: #ccc;
  border: none;
  color: #fff;
  padding: 5px 10px;
  cursor: pointer;
  float: right;
  margin-top: 10px;
}

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This CSS code will create a basic popup box in the page and place it in the center of the page. It also adds a close button to the popup so that it can be closed when the popup is no longer needed.

Step 2: Display the popup box

Now that we have created the popup box, the next step is to display it when needed. To do this, we will use jQuery’s show() method.

The jQuery code is as follows:

$(document).ready(function() {
  $('.show-popup').click(function() {
    $('.popup').show();
  });
});

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This code will find the element named .show-popup (such as a button) on the page. When the user clicks this element, the pop-up box It will be displayed using show() method.

Step 3: Close the pop-up box

After the user completes the actions related to the pop-up box, it is best to remove it from the page. To do this, we will use jQuery’s remove() method.

The jQuery code is as follows:

$(document).ready(function() {
  $('.close').click(function() {
    $('.popup').remove();
  });
});

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This code will find the element named .close (close button) on the page. When the user clicks this element, the pop-up box will use remove() method removes from the page.

Step 4: Complete Code

Finally, we are going to put all the code snippets together so that they create a working popup.

The complete code is as follows:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>jQuery删除显示的弹框</title>
  <style>
    .popup {
      position: fixed;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      background-color: #fff;
      padding: 20px;
      box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.5);
      z-index: 9999;
    }

    .popup h2 {
      font-size: 18px;
      margin-top: 0;
    }

    .popup p {
      margin-bottom: 0;
    }

    .close {
      background-color: #ccc;
      border: none;
      color: #fff;
      padding: 5px 10px;
      cursor: pointer;
      float: right;
      margin-top: 10px;
    }
  </style>
</head>
<body>
  <button class="show-popup">显示弹框</button>
  <div class="popup">
    <h2>提示</h2>
    <p>欢迎来到我的网站！</p>
    <button class="close">关闭</button>
  </div>

  <script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
  <script>
    $(document).ready(function() {
      $('.show-popup').click(function() {
        $('.popup').show();
      });

      $('.close').click(function() {
        $('.popup').remove();
      });
    });
  </script>
</body>
</html>

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Now, when the user clicks the "Show Pop-up Box" button, the pop-up box will be displayed using the show() method. When the user clicks the close button, the popup is removed from the page using the remove() method.

Summary

In this article, we have learned how to use jQuery to create and remove displayed popups. Pop-ups are a great way to interact with users, but if used incorrectly, they can degrade the user experience. It's best to only show popups when necessary and use jQuery to remove them to keep the page clean and easy to use.

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