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Why does 0.1 + 0.2 === 0.3 return false?

Why does 0.1 + 0.2 === 0.3 return false?


Asked On2019-10-13 02:38:18 by:arunwebber

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Consider typing this into chrome console

0.1  + 0.2
this will return 
>0.30000000000000004
That is the reason why the above expression returns false
This is something to do with how effectively javascript handles the floating-point values.
So in javascript, it is vice to calculate the floating-point  values in business logic instead of doing mathematical operations directly in it
For example if a currency addition has .99 +.01 then instead of just adding those using floating points add them like 99+1 and divide with 100 




Answerd on:2019-10-13 Answerd By:arunwebber

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