JSFiddle - React, Tailwind, and code Playground

by chacha69

JavaScript

//Foreach

var arr = [1, 2, 3];
var total = 0;

arr.forEach(function (i) {
    total += i;
});

console.log(total);

//Reduce

var arr = [1, 2, 3];

var total = arr.reduce(function (a, b) {
    return a + b;
});

console.log(total);

var people = [{
    name: 'jesse'
},{
    name: 'walt'
},{
    name: 'saul'
}];

//Some

console.log(people.some(function(person){
    return person.name.length > 4;
}));

//Every

console.log(people.every(function(person){
    return person.name.length > 4;
}));

//Filter
console.log(people.filter(function(person){
    return person.name.length > 4;
}));

//Map
console.log(people.map(function(person){
    return person.name.split('').reverse().join('');
}));