5
18/10/2024 8:53 am
Topic starter
Can you please give an example or examples of Arrow (Lambda) Functions in JS. I know that JavaScript functions can be written in short form using "=>" (arrow). This is the short syntax for anonymous functions.
4 Answers
6
18/10/2024 8:55 am
Here is my example:
this is JS function:
let f = function (a, b) {
return a + b;
};
console.log(f(5, 6));
and this is the same function but with arrow (lambda):
let q = (a, b)=>a + b; console.log(q(5, 6));
Another 3 examples:
//example with array and forEach: [10, 20, 23, 432, 343, "text"].forEach(x=>console.log(x)); //example with .filter: console.log([10, 20, 30].filter(a=>a > 15)); //example with .map: console.log([10, 20, 30].map(a=>a * 2)); Hope you get it
Hope you get it
3
18/10/2024 8:56 am
let sum = (a, b)=> a + b; console.log(sum(5, 16));
3
18/10/2024 8:58 am
Mine:
let increment = function (x) {
return x + 1;
};
console.log(increment(6));
The same as the above - but with lambda (shortens the code):
let incrementTwo = x => ++x; console.log(incrementTwo(6));
2
18/10/2024 8:59 am
Here is an example from my WordPress project of the ES6 arrow function syntax (you do not need to name it - it can be anonymous):
setTimeout(() => this.searchField.focus(), 301);
