Скачать или смотреть Resolving InvalidValueError & Uncaught TypeError in Angular Google Maps Integration

Discover how to fix the `InvalidValueError` and `Uncaught TypeError` when displaying maps using Angular Google Maps in your project.
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This video is based on the question https://stackoverflow.com/q/63199320/ asked by the user 'Nooh Ahamad' ( https://stackoverflow.com/u/11720690/ ) and on the answer https://stackoverflow.com/a/63199583/ provided by the user 'Janitha Rasanga' ( https://stackoverflow.com/u/9423643/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Fixing InvalidValueError and Uncaught TypeError in Angular Google Maps

When integrating Angular Google Maps into a project, developers may encounter errors that can hinder the experience and functionality of their application. Two common errors in this context are InvalidValueError and Uncaught TypeError. In this post, we will explore these issues and provide a straightforward solution to help you resolve them.

Understanding the Problem

In a typical scenario, the goal is to display location information retrieved from an API onto a map. Let's consider the provided code and the error messages that arise during implementation.

The Error Messages

InvalidValueError:

This error indicates that the map cannot set its center due to invalid latitude or longitude values. For instance:

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

Uncaught TypeError:

This error occurs when trying to perform actions related to the map, such as zooming, but the map instance is not correctly initialized. An example is:

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

These errors typically stem from improperly formatted or undefined coordinates.

The Solution

To fix these issues, you need to ensure that the latitude and longitude values are correctly parsed and used in your map initialization. Here’s how you can go about it:

Step 1: Parsing Latitude and Longitude

Firstly, we need to convert the latitude and longitude values from strings to floating-point numbers. Modify your component.ts file as follows:

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

This change ensures that the coordinates are in a proper numerical format required by the Google Maps API.

Step 2: Updating the Map Component

Next, ensure that you are using these parsed values in your HTML template. Update your component.html file like this:

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

This adjustment ensures that both the map and the marker are using the correctly formatted numerical latitude and longitude values.

Conclusion

By making these two simple changes, you should be able to eliminate the InvalidValueError and Uncaught TypeError issues when displaying your Google Map with Angular. Remember to always ensure that the data you use for such functionalities align with expected formats—mismatches often lead to errors that can be frustrating to debug.

If you run into further issues or have questions about integrating Google Maps into your Angular projects, feel free to leave a comment below!