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Heru Hartanto
Heru Hartanto

Posted on

Set default value in your function parameter

#javascript #beginners

Hi Dev Community 😇

Did you know that we can actually set our function parameter with a default value, It will make your function at least return default value instead of undefined, sound great isn't it 🤩

 function multiply(a=1 ,b = 1) { return a * b; } console.warn(multiply(3,2)) // expected output : 6 (3 multiply by 2) console.warn(multiply(5)) // expected output: 5 ( 5 multiply by 1) console.warn(multiply()) // expected output: 1 (1 multiply by 1)
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now could you predict the expected output from this function 🤔

function substraction(a=1 ,b = 3) { return a - b; } console.warn(substraction(3)) // the result is ?
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