JavaScript Code Execution - Simplified
2 min read
JavaScript executes code in two phases:
Memory Creation Phase (Variable Setup):
This is where JavaScript gets ready to work.
It sets up space in memory for things like variables and functions.
Variables are prepared but don't have values yet; they are like empty boxes.
Functions are stored in memory with all their instructions, like a recipe.
Code Execution Phase (Doing the Work):
Now, JavaScript starts doing the actual tasks in your code.
It works one step at a time, following the order of your code.
When it sees a variable, it gives it a value.
If there's a function, it runs that function like a small program.
After the function finishes, the result is saved, and the function's stuff is removed.
Think of it like making a list of what you need to do (Memory Creation Phase) and then actually doing each task one by one (Code Execution Phase). When you have a recipe (function), you follow the steps in the recipe, and when you're done, you put away the recipe and keep the dish you made.
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