7. Popping the Hood

Activity 7.01: Finding out the Number of Stack Frames

Solution

1. The function that establishes the call stack's limit is as follows:

   var frameCount = 0;

   function stackOverflow() {
     frameCount++;
     stackOverflow();
   }

   The solution starts out with the frameCount variable being initialized with the value 0. The stackOverflow() function is declared, which will add 1 to the frameCount variable and then call itself, thus causing a stack overflow.

2. Now, setTimeout() function is initiated, which will log the value of frameCount to the console after a minimum of 500 milliseconds. Now, call the stackOverflow() function.

   setTimeout(() => console.log(frameCount), 500);
   stackOverflow();

   This takes the console.log function out of the main execution thread, allowing it to be called after the stack overflow error is thrown:

Figure 7.22: Showing the solution and number of stack frames being pushed before a stack overflow is triggered

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