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ViewsHow can an arrow function receive a parameter as an object which has both properties and default parameters?
Can someone help me understand the following code?
const doit = ({
left: Left,
right: Right,
leftWeight = 1,
rightWeight = 1
}) => {
console.log(Left, Right, leftWeight, rightWeight);
};
doit({ left: '111', leftWeight: 2});It seems to be two ways to pass default parameters, and destructuring assignment is involved somehow but how can I break this down to understand it?
Addendum 1
Ok, it seems as though this is not an issue of default parameters and arrow functions but simply object destructuring:
const { left: Left, right: Right, leftWeight = 1, rightWeight = 1 } = { left: "111", leftWeight: 2 };
console.log(Left, Right, leftWeight, rightWeight);Addendum 2
This code gives the same result:
const { Left, Right, leftWeight = 1, rightWeight = 1 } = { Left: "111", leftWeight: 2 };
console.log(Left, Right, leftWeight, rightWeight);Object destructuring apparently has the option to rename the variables:
·
Juan Pablo Isaza
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