31 lines
894 B
Markdown
31 lines
894 B
Markdown
---
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category: Software Engineering
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tags:
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- callstack
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---
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# The call-stack
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A [stack](/Data_Structures/Stacks.md) data structure that holds the information of the functions called within a program that allows transfer of the application control from these functions to the main process after code inside the functions has been executed.
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## Example
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```js
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function greet(who) {
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console.log('Hello ' + who);
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}
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greet('Harry');
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console.log('Bye');
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```
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### Breakdown
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1. Interpreter receives call to `greet()`
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2. Goes to the definition of this function (`function greet(who)...`)
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3. Executes the `console.log` within this function
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4. Returns to the location that called it (`greet("Harry")`)
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5. Finds that there is nothing else to do in this function so moves to next function: the `console.log("bye")`
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6. Executes
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7. Returns to line that called it. Finds nothing else to do. Exits program.
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