I've found a JavaScript arrow function that looks something like this:
([a,b,c]) => {
a = 1;
b = 2;
c = 'x';
}
How is this function invoked? Also, what is this construct called?
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1Destructuring parameters?Sebastian Simon– Sebastian Simon2017-11-17 10:00:48 +00:00Commented Nov 17, 2017 at 10:00
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2 Answers
This is an arrow function, which gets an array as a parameter and destruct the first 3 values into the corresponding parameters - a,b,c. But it must be assigned to a variable or be self invoked.
() => {} - Arrow function
[a,b,c] - Array destructuring
Example
const func = ([a,b,c]) => {
console.log(a);
console.log(b);
console.log(c);
};
func([1,2,3,4]);
Comments
([a, b, c]) => {}
The first part is a destructuring assignment in the parameters, which takes an array as parameter and returns the variables with the values of the position.
The later assignment makes no sense with the given code.
