Practice Set - Basic Math and String Operations

by russduza

HTML

<h3>Basic Math and String Operations</h3>
<h4>4 Tasks for this Practice Set:</h4>
<ol>
    <li>
        Write a script to add two numbers and output the sum to the console</li><li>
    Write a script that prompts for input, adds one to whatever number was input and outputs the sum to the console. Use the increment operator.  Assume that the input will be a number (no type-checking is required for this exercise).
    </li><li>
    Look up the Math object, and use one of its methods to do <i>something</i> to a number and output the result to the console (you pick: square it, round a decimal number up or down, do a trig function...whatever) Make sure the you comment your code or use console output to describe what you’re doing.
</li><li>
    Prompt for input and assign the result to a variable. Then, look up the String object, and use one of its properties to output the length of the string variable to the console.
    </li>
</ol>

JavaScript

// Insert your code for #1 here

var myAge = 33;
var retirementAge = 65;

var howLongTilThen = retirementAge - myAge;

console.log(howLongTilThen);


// Insert your code for #2 here

var age = prompt("What is your age in years?");

age = ++age;

console.log("Next year I will be" + age);

// Insert your code for #3 here
var x = Math.sqrt(16);

console.log("The square root of 16 equals " + x);


// Insert your code for #4 here

var dadsName = prompt("What is your dads name?");

console.log ("Your dads name has" + (dadsName.length) + "characters")