Скачать или смотреть Resolving the setWeight Method Error in Google Apps Script for Slides

Discover how to fix the common bug related to changing line weights in Google Slides using Apps Script. Learn the correct method to avoid errors.
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This video is based on the question https://stackoverflow.com/q/77855679/ asked by the user 'Colin Wood' ( https://stackoverflow.com/u/12487617/ ) and on the answer https://stackoverflow.com/a/77856020/ provided by the user 'TheWizEd' ( https://stackoverflow.com/u/3656739/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Troubleshooting setWeight Method Errors in Google Apps Script for Google Slides

When working with Google Slides through Apps Script, you may encounter unexpected errors that can quickly frustrate your development process. One common issue arises when attempting to change the width of a line, specifically when using the setWeight method. This guide will guide you through understanding the problem and provide a clear solution to get your code working seamlessly.

The Problem: Encountering an Error

While trying to adjust the width of a line in Google Slides, you may run into an error message, such as:

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

This error typically occurs when you attempt to call the setWeight method on the wrong object type.

Example Code That Causes the Error

Here's a quick look at the problematic code snippet that prompts the error:

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

In this instance, you are attempting to change the weight of a line, but mistakenly chaining setWeight to the result of getWeight, which returns a numerical value (in this case, 0.75). Since numbers do not have a setWeight method, you receive an error.

The Solution: Adjusting Your Code

To correctly adjust the weight of a line in Google Slides, you simply need to call the setWeight method on the line object itself, rather than on the result of getWeight. Here’s how you should modify your code:

Correct Approach

Instead of doing this:

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

You should write it as follows:

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

Key Takeaways

Understand Object Types: Remember that methods like getWeight() return primitive values (numbers), which do not have methods (like setWeight).

Target the Right Object: Always make sure to call the method on the correct object to avoid these kinds of errors.

Check for Documentation: Familiarize yourself with the Google Apps Script documentation for Slides to understand what methods belong to which objects.

Conclusion

By following this simple adjustment in your Google Apps Script code for Google Slides, you can effectively resolve the setWeight error. Always keep in mind the distinction between different object types and methods, and consult the documentation when in doubt. Happy scripting!