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JavaScript JavaScript Basics (Retired) Working With Numbers Doing Math

Posted by Hae Choi
Hae Choi
Courses Plus Student 1,506 Points

Is this right?

var secondsPerMin = 60; var minsPerHour = 60; var hoursPerDay = 24; var daysPerWeek = 7; var weeksPerYear = 52; var secondsPerDay = secondsPerMin * minsPerHour * hoursPerDay; document.write("There are " + secondsPerDay + " seconds in a day ");

var yearsAlive = 26 var secAlive = yearsAlive * secondsPerDay * 365; document.write("I've been alive for more than " + secAlive + " seconds.");

3 Answers

Juan Lopez
.a{fill-rule:evenodd;}techdegree seal-36
Juan Lopez
Treehouse Project Reviewer

Great Job. Everything looks great. Might be a copy/paste typo but you're missing a semicolon after var yearsAlive = 26

virus200
virus200
6,583 Points
virus200
virus200
6,583 Points

This was how I did mine. Yours works to and I am no expert but multiplying by 365 directly I believe is called hardcoding a number and I think generally people try to avoid doing that. 

var yearsAlive = 27;
var secondsAlive = secondsPerDay * daysPerWeek * weeksPerYear * yearsAlive;
document.write('I have been alive for' + secondsAlive + ' seconds');
hapaman
seal-mask
.a{fill-rule:evenodd;}techdegree
hapaman
Full Stack JavaScript Techdegree Student 3,026 Points
hapaman
.a{fill-rule:evenodd;}techdegree
hapaman
Full Stack JavaScript Techdegree Student 3,026 Points 
var secondsPerMinute = 60;
var minutesPerHour = 60;
var hoursPerDay = 24;
var daysPerWeek = 7;
var weeksPerYear = 52;
var daysPerYear = 365;

var secondsPerDay = secondsPerMinute * minutesPerHour * hoursPerDay; 
document.write("There are " + secondsPerDay + " seconds per day.<br>");

var myAge = 99;
var dougYearsAlive = secondsPerDay * daysPerYear * myAge;
document.write("I've been alive for " + dougYearsAlive + " seconds!");