How to Identify and Troubleshoot Javascript Stack Overflow Errors in IE?

Troubleshooting Javascript Stack Overflow Issues in IE

Stack overflow errors in Javascript can be frustrating, especially when encountering unpredictable behavior in third-party libraries. IE browsers have notoriously lower stack limits compared to other browsers, as demonstrated by a simple test script that reveals a stack limit of around 3200 in IE8.

To identify the source of a stack overflow, it is imperative to trace the chain of function calls leading to the exception. Unfortunately, JavaScript does not provide native support for detailed stack traces, making it challenging to pinpoint the culprit function. However, there are techniques for obtaining limited information about the function that raised the exception.

One approach involves modifying the test script to count the number of times a recursive function is called before triggering the stack overflow. By manually incrementing the count in the catch block, we can estimate the maximum stack depth for the current browser:

<code class="js">var i = 0;
function inc() {
  i++;
  inc();
}

try {
  inc();
}
catch(e) {
  // The StackOverflow sandbox adds one frame that is not being counted by this code
  // Incrementing once manually
  i++;
  console.log('Maximum stack size is', i, 'in your current browser');
}</code>

This method provides a rough approximation of the stack depth where the overflow occurred. It's important to note that different browsers may report slightly different stack depths due to internal optimizations and configurations.

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