Practice Set - Basic Math and String Operations

by Deandra Carroll

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

//Note: I'm getting an error in the console regarding iframe allow-scripts/allow-same-origin and sandboxing - I do not understand this error therefore I was not sure how to fix it.

// Insert your code for #1 here
var myAge = 37;
var tenYears = 10;
var tenYearsFromNow = myAge + tenYears;
console.log(tenYearsFromNow);

// Insert your code for #2 here
var year = prompt("What is the current year?");
console.log(++year);

// Insert your code for #3 here
var round = 54.6;
console.log(Math.round(round));

// Insert your code for #4 here
var faveNum = prompt("What is your fave number?");
//var result = faveNum;
//console.log(string);