How to Dynamically Insert SVGs from an Array in JavaScript

Learn how to embed SVG icons dynamically in your quiz application using JavaScript arrays. Follow this guide for a step-by-step solution.
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Dynamically Insert SVGs into Your Quiz Application

Are you building a quiz application and running into difficulties displaying SVG icons for your multiple-choice options? If you've got a folder full of SVGs and want to associate each SVG with a specific answer choice, you're in the right place. In this guide, we'll explore how to dynamically insert SVGs from an array using JavaScript.

The Problem

When it comes to displaying graphics dynamically based on user choices, many developers encounter the challenge of ensuring the right file paths and formats for their SVGs. In our case, the developer had implemented a structure where SVGs are referenced based on question choices, but they were only seeing the names of the SVG files (like Q1_A, Q1_B) instead of the actual images.

This is often a common pitfall, especially when setting content using innerHTML. The developer needed a way to correctly reference the SVG files and display them inside an image tag.

The Solution

The good news is that displaying SVGs dynamically in your HTML is not only possible but relatively straightforward. We will discuss how to modify your existing JavaScript code to make it work seamlessly.

Step 1: Update Your SVG Insert Logic

Instead of directly assigning the file name to the innerHTML of the elements, you need to wrap your SVG file path inside an <img> tag. This ensures that the browser recognizes it as an image source. Here's how you can modify your loop for inserting SVG icons:

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

Explanation:

We use a template literal to create a string that contains an <img> tag.

${questions[choicesCounter].icons['choice' + number]} dynamically selects the appropriate SVG file path based on the current question and choice number.

Step 2: Sample Code Summary

To provide clarity, here’s how your complete JavaScript, HTML, and CSS would look:

JavaScript Code

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

HTML Structure

Your HTML structure should remain similar to this, incorporating data-number attributes:

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

CSS Styling

Keep your CSS stylish and effective:

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

Conclusion

By wrapping your SVG paths in an <img> tag and utilizing template literals in JavaScript, you can dynamically display SVG graphics in your quiz application with ease. This approach not only resolves your original issue but enhances the overall user experience of your application.

Now you're ready to insert SVG icons correctly into your quiz! If you have any further questions or need additional support, don’t hesitate to comment below. Happy coding!