Question

Could someone please help me do the following with JavaScript:

• I have an array (array1) that contains strings
• I need to loop through each element of the initial array (array1)
• then I need to get the value of each index in array1, and add a letter to each value
• and finally to write the modified value of each index from array1 into array2.

Thank you.

Answer 1

//declares the array and initializes it with strings
var array1 = ["one", "two", "three", "four"];

//declares the second array
var array2 = []; 

//this line begins the loop. Everything inside the { } will run once for every single item inside array1
for (var i = 0; i < array1.length; i++) 
{
    //this gets the contents of the array at each interval
    var string = array1[i]; 

    //here we take the original string from the array1 and add a letter to it.
    var combo = string + "A"; 

    //this line takes the new string and puts it into the 2nd array
    array2.push(combo); 
}

//displays a message box that shows the contents of the 2nd array
alert(array2);