cesarkohl

var names = ['adam', 'brian', 'charles'];
names.forEach (function (name) {
 console.log (name);
});
// adam, brian, charles

cesarkohl

var names = ['adam', 'brian', 'charles'];
function printsName (name) {
 console.log (name);
}
names.forEach (printName);

cesarkohl

var channels = ["A", "B", "C"];
channels.forEach(function(channel) {
  channels.push("D"); // this item will be ignored
  console.log(channel);
})

cesarkohl

var channels = ["A", "B", "C"];
channels.forEach (function (channel) {
 channels.push ("D"); // this item will be ignored
 console.log (channel);
})
console.log (channels);

// ['A', 'B', 'C', 'D', 'D', 'D']

cesarkohl

var numbers = [1,2,3];
double var = [];
for (var i = 0; i <numbers.length; i ++) {
  double.push (numbers [i] * 2);
}
console.log (numbers); // [1,2,3]
console.log (double); // [2,4,6]

cesarkohl

var numbers = [1,2,3];
double var = numbers.map (function (number) {
  return number * 2;
});
console.log (numbers); // [1,2,3]
console.log (double); // [2,4,6]

cesarkohl

var students = [
 {name: 'adam', age: 15},
 {name: 'brian', age: 18},
 {name: 'charles', age: 20}
];
varLarest students = [];
for (var i = 0; i <students.length; i ++) {
 if (students [i] age> = 18) {
 MajorStudents.push (students [i]);
 }

cesarkohl

var students = [
 {name: 'adam', age: 15},
 {name: 'brian', age: 18},
 {name: 'charles', age: 20}
];
varLarest students = students.filter (function (student) {
 return student.ity> = 18;
});
console.log (MajorStudents);
// [{name: 'adam', age: 18}, {name: 'brian', age: 20}]

cesarkohl

var students = [
 {name: 'adam'},
 {name: 'brian'},
 {name: 'charles'}
];
var student;
for (var i = 0; i <students.length; i ++) {
 if (students [i] .name === 'brian') {
 student = students [i];
 break; // avoid scrolling through the rest of the list

cesarkohl

var students = [
 {name: 'adam'},
 {name: 'brian'},
 {name: 'charles'}
];
var student = students.find (function (student) {
 return student.name === 'brian';
});
console.log (student); // {"name": "brian"}