Practice Set - Arrays and Loops

by subsari

HTML

<h3>Arrays &amp; Looping</h3>
<h4>4 Tasks for this Practice Set:</h4>
<ol>
    <li>
        Make an Array of strings and assign it to a variable. You may make the strings a list of anything you like and use a variable name of your choice.</li>
    <li>
        Use one of the methods of the Array object to insert a new element to the beginning of your array. Looking through the methods on the Array reference page at <a href="http://www.w3schools.com/jsref/">W3Schools</a> may be helpful. 
    </li>
    <li>
    Using the Array you made in the previous steps, iterate over its elements and write each one to the console.
    </li>
    <li>
        Loop through the integers from 1 to 100 and write each to the console only if it is odd.
    </li>
</ol>

JavaScript

"use strict"; 

// Insert your code for #1 here
var arr = ["hello", "world"];

// Insert your code for #2 here
function addToArray(_arr){
 _arr.unshift("Starting");
 console.log(_arr);
}
addToArray(arr);

// Insert your code for #3 here
function consoleArray(_arr){
	for (var i = 0; i < _arr.length; i++){
		console.log(_arr[i]);
	}
}
consoleArray(arr);

// Insert your code for #4 here
function consoleLogIfOdd(start, end){
	for (var i = start; i <= end; i++){
		var isEven = i % 2 == 0;
		if (!isEven){
			console.log(i);
		}
	}
}
consoleLogIfOdd(1,100);