How to Track Changes in Textarea Using Vue.js

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The Challenge

The objective is to display a button to save the changes only when the user modifies the content in a textarea. Specifically, when the value in the textarea differs from the initial value, we should trigger the visibility of the Save button.

Here’s what we need to accomplish:

Monitor the textarea for changes.

Set a flag to indicate whether the changes have occurred.

Display the Save button based on that flag.

Implementation Details

Step 1: Setting Up the Template

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

Key Points:

The button's visibility is controlled by the showSaveButton boolean flag.

Step 2: Defining the Component

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

Explanation:

Data Property: We initialize showSaveButton to false, meaning the button won’t be displayed initially.

Methods: The handleChange method is called whenever the textarea changes. It sets showSaveButton to true, thereby making the Save button visible.

Step 3: Alternative Approach Using Watchers

Another way to achieve this is by using Vue’s watchers. Here’s how that would look:

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

Explanation:

Conclusion

Feel free to experiment with these techniques and integrate them into your projects for improved interactivity!