Скачать или смотреть Resolving the Maximum Call Stack Size Exceeded Error in ASP.NET MVC with JavaScript

Learn how to effectively tackle the `Uncaught RangeError: Maximum call stack size exceeded` error in ASP.NET MVC while using JavaScript to create a print button.
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This video is based on the question https://stackoverflow.com/q/68106266/ asked by the user 'Cole Perry' ( https://stackoverflow.com/u/14108804/ ) and on the answer https://stackoverflow.com/a/68106344/ provided by the user 'Nikki9696' ( https://stackoverflow.com/u/456669/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Understanding the Maximum Call Stack Size Exceeded Error in ASP.NET MVC

If you're developing an application with ASP.NET MVC and you encounter the following error when trying to invoke a JavaScript print function via a button click, you're not alone:

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This frustrating message typically indicates that your code is unintentionally creating an infinite loop of function calls, leading to an overflow in the call stack. Here’s what might be happening and how to fix it.

The Problem Explained

In your ASP.NET MVC application, you likely have a button set up to call a JavaScript function intended to trigger the print dialog. Here's the initial code snippet you might be working with:

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And your JavaScript function might look like this:

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The issue arises because naming your function print conflicts with the built-in window.print() function provided by the JavaScript API. When you click the button, the print() function in your code is called, but since it shares the same name as the built-in method, it leads to a recursion scenario. Essentially, your custom print function is calling itself over and over again, causing the stack overflow.

Fixing the Issue

To resolve this error, we can take two main approaches:

1. Rename Your Function

One of the simplest solutions is to rename your custom function so it does not conflict with the built-in JavaScript function.

For instance, you could change the function to printDocument:

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And update your button code accordingly:

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2. Use the Built-in Function Directly

If you prefer to keep things simple, you can bypass the custom function altogether and make the button call the built-in function window.print() directly:

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This option avoids the need to introduce another function and directly invokes the JavaScript print functionality.

Conclusion

By following these strategies, you should be able to eliminate the error and ensure your print button functions as intended. Remember, naming conflicts can often lead to challenging errors, so it's crucial to choose unique function names when dealing with JavaScript, particularly with frequently used terms like print.

Now you can implement a functioning print feature without running into the Maximum call stack size exceeded error!