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