How do I use the division sign.

Question

0.00/5 (No votes)

See more:

In Javascript all the variables exist with values associated with them.

My question is if the division sign is incorrect for Javascript because I am getting no result.

JavaScript

var JD = Math.floor(365.25 * (yr + 4716)) + Math.floor(30.6001 * (mo + 1)) + dy + (2 - Math.floor(yr / 100) + Math.floor(Math.floor(yr / 100) / 4)) - 1524.5 + (hr24 + mn / 60 + (sc) / 3600 - (tz + dst)) / 24;

What I have tried:

I have tried using the "%" in place of:

JavaScript

var JD = Math.floor(365.25 * (yr + 4716)) + Math.floor(30.6001 * (mo + 1)) + dy + (2 - Math.floor(yr % 100) + Math.floor(Math.floor(yr % 100) % 4)) - 1524.5 + (hr24 + mn % 60 + (sc) % 3600 - (tz + dst)) % 24;

I have also used the "%" just in Math and if statements. Are these correct?

Posted 7-Jul-18 5:55am

teledexterus

Updated 7-Jul-18 6:29am

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Richard MacCutchan · Answer 1 · 2018-07-07T06:03:00

Solution 1

It is clearly documented here: JavaScript Operators[^].

Posted 7-Jul-18 6:03am

Richard MacCutchan

OriginalGriff · Answer 2 · 2018-07-07T06:29:00

The division sign is correct, but your equation or values may not be.
Try breaking the calculation up into sections:

var temp1 = Math.floor(365.25 * (yr + 4716));
var temp2 = Math.floor(30.6001 * (mo + 1));
var temp3 = 2 - Math.floor(yr / 100);
var temp4 = Math.floor(Math.floor(yr / 100) / 4)
var temp5 = hr24 + mn / 60 + (sc) / 3600 - (tz + dst);
varJD = temp1 + temp2 + dy + temp3 + temp4 - 1524.5 + temp5 / 24;

Then either use a debugger to look at the values, or output them to your page so you can see exactly what is going on.

I have no idea what that calculation is supposed to give you, or a clue as to the values you are feeding it, so I can't fix it for you!