how to create a for loop in javascript code example

Example 1: javascript loop through array

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

Example 2: for loop javascript

var i;
for (i = 0; i < 10 ; i++) {
  //do something
}