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JavaScript JavaScript Basics (Retired) Working With Numbers Doing Math

Posted by Ginger Ranslam
Ginger Ranslam
8,156 Points

When we are using document.write is there a way to get the answers with commas?

So in this lesson we are creating javascript equations that we can use on our webpage. I'm just wondering how we incorporate commas into larger numbers so they are easier to read. So when I use document.write to express how many seconds old I am I get 914544000 and it would be nice to know how I get that to show 914,544,000.

2 Answers

Robert Richey
Robert Richey
Courses Plus Student 16,352 Points

Hi Ginger,

From MDN, call toLocaleString() on a number object.

var number = 3500;

console.log(number.toLocaleString()); // Displays "3,500" if in U.S. English locale

Ginger Ranslam
Ginger Ranslam
8,156 Points

Thank you!

Joseph Damiani
Joseph Damiani
1,066 Points
Joseph Damiani
Joseph Damiani
1,066 Points

In this example you would write your code down like this.

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.toLocaleString() + " seconds in a day");