How to Properly Handle User Input in Your Weather App Using JavaScript

Learn how to effectively capture and use `user input` in your weather app with JavaScript by fixing common mistakes.
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This video is based on the question https://stackoverflow.com/q/66195190/ asked by the user 'fernie' ( https://stackoverflow.com/u/15165867/ ) and on the answer https://stackoverflow.com/a/66195850/ provided by the user 'slumbergeist' ( https://stackoverflow.com/u/6517778/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Fixing User Input in Your Weather App

Creating a weather app can be a fun project, especially if you enjoy coding and want to practice your JavaScript skills. However, newbies often face challenges, especially when it comes to capturing user input. Have you ever tried to get user input for a city name in your weather app and it simply wouldn't work? Well, you’re not alone! Let's dive into a common user input issue and how to fix it.

The Problem

You might have tried to assign a user input value to a variable using JavaScript, but encountered problems. For instance, you might have written something like this:

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

Unfortunately, this will lead to errors because it’s looking for an element with a class of .search-city, but your input HTML uses an id of search-city. Let's quickly grasp how to solve this.

The Solution

To successfully capture the user input for your weather app, follow these steps:

1. Update Your Query Selector

Your first issue is related to querying the input field. Since you're using an id, not a class, update your JavaScript code from:

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

to

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

This change correctly targets the input element identified by the id.

2. Correct Variable Naming

Another issue you had was with your variable naming. You created a variable called searchTem but tried to use searchTerm. Instead, declare it consistently. Update your code where you fetch the city name:

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

This ensures that the variable name matches throughout your code.

3. Complete Updated Code Example

Here’s how your complete JavaScript code might look after making the necessary adjustments:

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

4. Testing Your Changes

Once you update your code, ensure to test it by:

Entering different valid city names to see if your app returns the correct weather data.

Leaving the input blank and verifying that it defaults to 'Detroit'.

Conclusion

By making these changes, you can successfully capture user input in your weather app using JavaScript. Remember, debugging is a part of the learning process. Don’t hesitate to ask questions or seek help when things don’t work as expected!

Final Note

Encourage yourself to keep experimenting, and soon enough, you’ll be building more complex applications with ease. Happy coding!

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