javascript function declaration vs arrow function
function timesTwo(params) { return params * 2}function timesTwo(params) {
return params * 2
}
timesTwo(4); // 8javascript function declaration vs arrow function
function timesTwo(params) { return params * 2}function timesTwo(params) {
return params * 2
}
timesTwo(4); // 8javascript function declaration vs arrow function
Regular functions created through function declarations / expressions are both constructible and callable. ... Arrow functions (and methods) are only callable i.e arrow functions can never be used as constructor functions. Hence, they can never be invoked with the new keyword.js arrow function vs function
// currently common pattern
var that = this;
getData(function(data) {
that.data = data;
});
// better alternative with arrow functions
getData(data => {
this.data = data;
});arrow function syntax vs function expression syntax
// Using function expression syntax
const addNums = function(numOne, numTwo) {
return numOne + numTwo;
};
// Using new arrow function syntax
const addNums = (numOne, numTwo) => {
return numOne + numTwo;
};Copyright © 2021 Codeinu
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