js loop though array code example

Example 1: javascript for loop

var colors=["red","blue","green"];
for (let i = 0; i < colors.length; i++) { 
  console.log(colors[i]);
}

Example 2: loop through an array javascript

let array = ['Item 1', 'Item 2', 'Item 3'];

// Here's 4 different ways
for (let index = 0; index < array.length; index++) {
  console.log(array[index]);
}

for (let index in array) {
  console.log(array[index]);
}

for (let value of array) {
  console.log(value); // Will log value in array
}

array.forEach((value, index) => {
  console.log(index); // Will log each index
  console.log(value); // Will log each value
});

Example 3: javascript for loop

for (var i; i < 10; i++) {
  
}

Example 4: javascript loop through array

var myStringArray = ["hey","World"];
var arrayLength = myStringArray.length;
for (var i = 0; i < arrayLength; i++) {
    console.log(myStringArray[i]);
    //Do something
}

Example 5: loop elements in javascript

var list = [{a:1,b:2}, {a:3,b:5}, {a:8,b:2}, {a:4,b:1}, {a:0,b:8}];

for (var i = list.length - 1, item; item = list[i]; i--) {
  console.log("Looping: index ", i, "item", item);
}

######### ES6 Update ################

for (let item of list) {
    console.log("Looping: index ", "Sorry!!!", "item" + item);
}

Example 6: for loop javascript

var listItem = [
        {name: 'myName1', gender: 'male'},
        {name: 'myName2', gender: 'female'},
        {name: 'myName3', gender: 'male'},
        {name: 'myName4', gender: 'female'},
      ]

    for (const iterator of listItem) {
        console.log(iterator.name+ ' and '+ iterator.gender);
    }