Скачать или смотреть How to Display Multiple Links from an Array of Objects on Separate Lines Using JavaScript

Discover how to effectively use JavaScript to display multiple links for each country in an array of objects, ensuring each link appears on a separate line in the tooltip.
---
This video is based on the question https://stackoverflow.com/q/65920036/ asked by the user 'JustMe' ( https://stackoverflow.com/u/11764215/ ) and on the answer https://stackoverflow.com/a/65924158/ provided by the user 'Barmar' ( https://stackoverflow.com/u/1491895/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: How to display links from an array of objects separately on a new line?

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
How to Display Multiple Links from an Array of Objects on Separate Lines Using JavaScript

In JavaScript, working with arrays of objects can sometimes lead to challenges, especially when it comes to displaying information cleanly. A common problem developers encounter is needing to show multiple links corresponding to an object (like a country) but finding that these links are concatenated into a single line instead of displaying them separately.

In this guide, we’ll explore a practical solution to this problem and demonstrate how to effectively format your tooltips so that each link is presented on a new line.

The Problem at Hand

Imagine you have a list of countries, each with associated links. You want to display these links in a tooltip when a user hovers over a country on a map. If a country has multiple links, they may appear concatenated in a single line, making it difficult for users to read and interact with them.

For example, consider the situation where Germany has three links:

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

Instead of appearing as one long string, we want to display each link on a new line in the tooltip like this:

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

The Solution

To achieve this, we will modify the existing loop that generates our tooltips. Instead of simply inserting one link, we’ll iterate over the links using the map() method, creating a separate line for each link.

Step-by-Step Guide

Identify the Tooltip Property: Locate the part of your code where you set up the tooltipHTML property for your map polygons.

Modify the Loop: Instead of a direct assignment, you will use the map() function to iterate over the link array for each country. This allows you to format each link as an individual line with line breaks (<br>).

Implement the Changes: Your modified loop will look something like this:

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

Breakdown of the Code:

country.link.map(url => ...): This line iterates through each URL in the link array.

'<br><a href="{url.urlEncode()}">More info</a>': For each URL, it creates a formatted string that includes a line break and the HTML for a clickable link.

.join(""): This ensures that the resulting strings from the map are combined into one continuous string, which gets assigned to tooltipHTML.

Sample Adjusted Code snippet

Here’s a simplified version of how your adjusted loop might look in context:

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

Conclusion

By implementing this modification, you’ll create a much more user-friendly experience that allows viewers to easily access multiple links per country in a clear, organized manner. Each link will appear on a separate line in the tooltip, improving readability and interaction.

Now you're equipped to handle multiple links in tooltips using JavaScript! If you have any further questions or need clarification on any other programming concepts, feel free to ask.