Why 0.1 + 0.2 = 0.30000000000000004 in JavaScript? | Floating Point Precision Explained
🤯 Why does this happen? Where does that extra 04 come from?
In this video, I explain JavaScript floating-point precision in simple terms and show what happens when decimal numbers are represented internally using binary floating-point numbers.
In this video:
Why 0.1 + 0.2 doesn't give exactly 0.3
How computers represent numbers in binary
Why 0.1 and 0.2 cannot be represented exactly
Where the extra digits come from
What floating-point precision actually means
How toFixed() can help with simple decimal formatting #coding #developer #programming #javascript #nodejs #webdevelopment
Why financial calculations need more careful handling
Important: toFixed() is not a universal solution for financial calculations; production financial systems should use appropriate decimal/integer-based techniques.
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