A frame is a sequential unit of work. In the preceding diagram, the frames are represented by the blocks inside the stack.
When a function is invoked in JavaScript, the runtime creates a frame in the stack. The frame holds that function's arguments and local variables. When the function returns, the frame is removed from the stack. Let's look at an example:
function foo(a: number): number {
const value = 12;
return value + a;
}
function bar(b: number): number {
const value = 4;
return foo(value * b);
}
After declaring the foo and bar functions, we will invoke the bar function:
bar(21);
When bar is executed, the runtime will create a new frame containing the arguments of bar and all its local variables (value). The frame (represented ...
