Скачать или смотреть How to Add a Thousands Separator in jQuery for HTML Strings

Learn how to easily implement a `thousands separator` in jQuery for displaying numbers in HTML strings using the `toLocaleString` method.
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This video is based on the question https://stackoverflow.com/q/71075721/ asked by the user 'Kyle Underhill' ( https://stackoverflow.com/u/6263953/ ) and on the answer https://stackoverflow.com/a/71075882/ provided by the user 'Carsten Massmann' ( https://stackoverflow.com/u/2610061/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Add a Thousands Separator in jQuery for HTML Strings

When working with web applications, it’s common to present financial data or large numbers in a more digestible format. One popular method for doing this is to apply a thousands separator (commas) to large numbers. If you’re using jQuery and need to display a subtotal with a thousands separator, you might wonder how to effectively accomplish that. Let’s dive into the solution.

The Problem: Displaying a Subtotal with Thousands Separator

Imagine you have a subtotal value calculated from user input (like a range slider) and you want to display that value neatly formatted with thousands separators. Simply multiplying the values together won’t be enough; you’ll need to format it so that it’s user-friendly and visually appealing.

The question arises: How do you convert a string-based number into a formatted version with commas to represent thousands?

Example Scenario

In the original code snippet, you might see something like this:

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

Here, digits() was intended to apply a formatting function, but using the built-in toLocaleString() method will be much more efficient and straightforward for achieving our goal.

The Solution: Using toLocaleString()

Instead of creating a custom function to format your numbers, let’s make use of JavaScript's built-in Number.prototype.toLocaleString() method. This built-in method can convert any number into a locale-specific string format.

Updated jQuery Code

Here’s how to effectively implement it in your jQuery code:

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

Breakdown of the Code

Getting Values:

We extract the current total, sold, and price values using .text() for reliable string retrieval from HTML elements.

Calculating Available Items:

The available items are calculated by subtracting sold from total.

Setting Range Input Maximum:

The maximum value of the quantity slider is set to the available items with .attr({max: available}).

Formatting the Subtotal:

When the slider is adjusted, the subtotal calculation takes place: price * this.value.

The result is formatted using toLocaleString("en-US", {style:'currency', currency:'USD'}), which not only adds thousands separators but also formats it as currency.

Result

Utilizing toLocaleString() ensures that your numbers are displayed neatly with thousands separators while also enhancing the user experience by displaying currency formatting. The net result is a clean, readable subtotal that users can understand at a glance.

Conclusion

Incorporating a thousands separator into your jQuery HTML string output doesn’t have to be complicated. By leveraging the powerful toLocaleString() method, you can present financial data clearly and effectively. Now, whenever you need to display large numbers, remember that a little formatting can go a long way in improving usability!

Implement this in your project, and you'll find that presenting figures with thousands separators is seamless and user-friendly.