arrow function return code example
Example 1: arrow function javascript
const suma = (num1, num2) => num1+num2
console.log(suma(2,3));
//5
Example 2: Arrow Functions
// The usual way of writing function
const magic = function() {
return new Date();
};
// Arrow function syntax is used to rewrite the function
const magic = () => {
return new Date();
};
//or
const magic = () => new Date();
Example 3: arrow function map js
const exampleArray = ['aa','bbc','ccdd'];
console.log(exampleArray.map(a => a.length));
//Would print out [2,3,4]
Example 4: how to make javascript function consise
multiplyfunc = (a, b) => { return a * b; }
Example 5: arrow function javascript
const power = (base, exponent) => {
let result = 1;
for (let count = 0; count < exponent; count++) {
result *= base;
}
return result;
};
//if the function got only one parameter
const square1 = (x) => { return x * x; };
const square2 = x => x * x;
// empty parameter
const horn = () => {
console.log("Toot");
};
Example 6: concise body arrow functions javascript
const plantNeedsWater = day => day === 'Wednesday' ? true : false;
//If only 1 Parameter no () needed
//Single line return is implicit
//Single line no {} needed