Скачать или смотреть How to Change Color of a Word in JavaScript

Learn how to dynamically change the color of a word in JavaScript using object-oriented programming. This guide explains the cleanest way to achieve this with examples.
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This video is based on the question https://stackoverflow.com/q/65205304/ asked by the user 'Josh' ( https://stackoverflow.com/u/14222695/ ) and on the answer https://stackoverflow.com/a/65205554/ provided by the user 'Deepak Tomson' ( https://stackoverflow.com/u/5727440/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Change Color of a Word in JavaScript: A Step-by-Step Guide

When programming with JavaScript, you may encounter a scenario where you need to dynamically change the color of a word. A typical use case might involve displaying a person’s favorite color in a sentence, reflecting the actual color specified rather than just showing the name of the color as a string. If you've struggled with how to accomplish this in a clean and efficient manner, you’ve come to the right place!

In this guide, we’ll break down how to manipulate color in a simple Object-Oriented Programming (OOP) context, using a custom JavaScript function. Read on to find out how to make text elements more engaging through color changes.

Understanding the Problem

The problem at hand is to create a function that outputs a sentence displaying a person’s name and their favorite color, while also changing the color of the word itself to match the specified color. For example, we want the output to be:

"Hello, my name is John Doe and my favourite colour is red"
but with the word "red" displayed in red color.

Basic Function Structure

Here’s a simplified version of the initial structure you might be dealing with:

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

Current Implementation

You might have created instances of Person like this:

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

But the current output simply displays the name of the color, not the actual color itself.

The Solution

To solve this, we need to modify the greet method so that it wraps the favorite color in an HTML <span> element, applying the necessary style to change its color dynamically.

Step-by-Step Modification

Modify the greet Method: Wrap the favouriteColour property in a <span> tag and apply a style attribute to it.

Render the Output: Update the inner HTML of designated containers in your HTML.

Here’s what the updated code looks like:

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

HTML Structure: Ensure that you have containers in your HTML to display the greetings.

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

Update the HTML Content: Use JavaScript to insert the greetings into the respective divs:

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

Complete Code Example

Combining all the discussed parts, your JavaScript might look like this:

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

Conclusion

And there you have it! By wrapping your favorite color in an HTML element and using inline styling, you can easily change its display color dynamically. This solution not only fulfills the requirement but also leverages JavaScript’s flexibility for rich text rendering.

Feel free to tweak the colors or expand this concept further in your own projects!