Aug 12, 2026 · 15 min · 6 segments
Loops let you repeat instructions. But repetition alone is not enough: what matters is what you do during each repetition. Over time, programmers noticed that the same structures come back again and…
Loops let you repeat instructions, but repetition alone is not enough.
What matters is what you do during each repetition.
Over time, programmers notice that the same structures come back again and again.
These are called loop patterns.
Learning them saves you from reinventing the wheel every time.
In this course, you will study the most common patterns you will use daily as a web developer.
All examples use simple pseudocode and JavaScript-style syntax, close to what you already saw with while and for loops.
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Loops let you repeat instructions, but repetition alone is not enough.
What matters is what you do during each repetition.
Over time, programmers notice that the same structures come back again and again.
These are called loop patterns.
Learning them saves you from reinventing the wheel every time.
In this course, you will study the most common patterns you will use daily as a web developer.
All examples use simple pseudocode and JavaScript-style syntax, close to what you already saw with while and for loops.