JavaScript function default parameters [duplicate]

Question

const add = (a = 1, b = 1, c = 1) => a + b + c
add(4, , 2)

Throws Uncaught SyntaxError, unexpected token ','

How do I call the function so b defaults to the value 1

Nina Scholz · Accepted Answer · 2022-02-12 16:30:39Z

3

Just take undefined as value.

const add = (a = 1, b = 1, c = 1) => a + b + c
console.log(add(4, undefined, 2));

answered Feb 12, 2022 at 16:30

Nina Scholz

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Comments

Sanket Shah · Accepted Answer · 2022-02-12 16:44:11Z

1

Pass undefined as value

const add = (a = 1, b = 1, c = 1) => a + b + c
console.log(add(4, undefined, 2))

answered Feb 12, 2022 at 16:31

Sanket Shah

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