Home arrow HTML arrow Adding Scientific Functions to a Web Page Calculator

Adding Scientific Functions to a Web Page Calculator

In this last part of our six-part series, we shall talk about adding scientific functions to our web page calculator, and then conclude. Scientific functions refer to functions like sin(?), cos(?), tan(?), and log(x). The process is not as difficult as you think. The JavaScript interpreter incorporated into many browsers has some built-in scientific functions. It has most of the functions we shall use. However, it does not have some of the functions we shall use. We shall have to code the pair of functions that JavaScript does not have.

Author Info:
By: Chrysanthus Forcha
Rating: 5 stars5 stars5 stars5 stars5 stars / 4
April 08, 2009
  1. · Adding Scientific Functions to a Web Page Calculator
  2. · Coding Summary
  3. · Details of the Scientific Function
  4. · The Global Variables

print this article

Adding Scientific Functions to a Web Page Calculator
(Page 1 of 4 )

The layout

This is the picture of our calculator with buttons for scientific functions:

Fig. 6.1 Scientific Calculator

I have included 10 scientific functions. A physical calculator has more. When you complete this series, you will be able to add the other functions. Each button for a scientific function has the identification or the abbreviated name of the particular function.

There are two rows of the scientific buttons. These rows are above the standard buttons. This is the HTML code for the scientific buttons in the calculator DIV element:

<button type="button" class="CalcBut" id="BSI" onclick="scienceFn('BSI')">sin</button><button type="button" class="CalcBut" id="BCO" onclick="scienceFn('BCO')">cos</button><button type="button" class="CalcBut" id="BTA" onclick="scienceFn('BTA')">tan</button><button type="button" class="CalcBut" id="BLN" onclick="scienceFn('BLN')">ln</button><button type="button" class="CalcBut" id="BLO" onclick="scienceFn('BLO')">log</button><br />

<button type="button" class="CalcBut" id="BYX" onclick="operator('BYX')">y<sup>x</sup></button><button type="button" class="CalcBut" id="BSQ" onclick="scienceFn('BSQ')">sqrt</button><button type="button" class="CalcBut" id="BX2" onclick="scienceFn('BX2')">x<sup>2</sup></button><button type="button" class="CalcBut" id="BEX" onclick="scienceFn('BEX')">e<sup>x</sup></button><button type="button" class="CalcBut" id="BRO" onclick="scienceFn('BRO')">Rnd</button><br />

These tags are just above the tags for the standard buttons.

blog comments powered by Disqus

- Does HTML5 Need a Main Element?
- Revisiting the HTML5 vs. Native Debate
- HTML5: Not for Phone Apps?
- HTML5 or Native?
- Job Hunting? Freelancer.com Lists This Quart...
- HTML5 in the News
- Report: HTML5 Mobile Performance Lags
- The Top HTML5 Audio Players
- Top HTML5 Video Tutorials
- HTML5: Reasons to Learn and Use It
- More of the Top Tutorials for HTML5 Forms
- MobileAppWizard Releases HTML5 App Builder
- HTML5 Boilerplate: Working with jQuery and M...
- HTML5 Boilerplate Introduction
- New API Platform for HTML5

Watch our Tech Videos 
Dev Articles Forums 
 RSS  Articles
 RSS  Forums
 RSS  All Feeds
Write For Us 
Weekly Newsletter
Developer Updates  
Free Website Content 
Contact Us 
Site Map 
Privacy Policy 

Developer Shed Affiliates


© 2003-2019 by Developer Shed. All rights reserved. DS Cluster - Follow our Sitemap
Popular Web Development Topics
All Web Development Tutorials