Скачать или смотреть How to Fetch the Parent bdi Value in jQuery, Ignoring Children Tags

Learn how to extract the `bdi` value from its parent element using jQuery, filtering out unwanted child tags while keeping it simple and concise!
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This video is based on the question https://stackoverflow.com/q/63937425/ asked by the user 'Umar Anwar' ( https://stackoverflow.com/u/8558700/ ) and on the answer https://stackoverflow.com/a/63937687/ provided by the user 'Always Helping' ( https://stackoverflow.com/u/13669048/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Introduction

When working with jQuery, you may encounter scenarios where you need to extract specific values from HTML elements without including their child tags. For instance, consider a bdi element that contains a price value, but is combined with a <span> that signifies the currency. In this guide, we’ll explore how to retrieve the bdi value, excluding any children, to use it effectively in your calculations, such as determining the total price based on product quantity.

The Problem

In your HTML structure, the bdi element is set up like this:

[[See Video to Reveal this Text or Code Snippet]]

If you want to access the numeric value 75.47 and perform calculations based on it, extracting it directly can be troublesome because of the presence of child tags. Thus, we need a way to focus on the bdi content alone.

The Solution

To achieve this, we will use jQuery methods that allow us to cleanly extract the text while ignoring child tags, remove unnecessary characters, and convert the text into a numerical format for calculations. Here’s how to do it in detailed steps:

Step 1: Grab the Price Text

We’ll use the .text() method to get the text of the bdi element. This method returns the combined text contents of the selected elements, stripping out all HTML tags, which is ideal for our needs.

Step 2: Remove Unwanted Characters

Next, we need to strip away any currency symbols and unnecessary quotes. This can be done using the .replace() method in jQuery:

Replace the dollar sign ($)

Remove any double quotes (")

Step 3: Trim Whitespace

It’s also vital to trim any excess whitespace from the string to ensure our numerical operations are precise. For this, we can use the .trim() method.

Step 4: Convert String to Number

Finally, we need to convert the cleaned-up string into a number type. For calculations involving integers, we use parseInt(), whereas for decimal calculations, parseFloat() is ideal.

Complete Example Code

Below is a complete example of how this comes together using jQuery:

[[See Video to Reveal this Text or Code Snippet]]

HTML Structure

Here’s how your relevant HTML block might look:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By following these steps, you can efficiently access the parent bdi value while ignoring its children, helping you perform necessary calculations like total pricing based on user input quantities. Remember to always handle different formats in your data and ensure your numerical operations are accurate by using the appropriate conversion methods.

Now you can tackle similar problems in your jQuery projects with ease! Happy coding!