How to make a calculator using Javascript

We are going to create a calculator. We need to create a basic structure using HTML, style it using CSS3 and make it work using JavaScript.

Learn to make a cool looking calculator using Javascript and CSS3.

CSS3 box shadows are used to create the 3D effect and transitions are used for the smooth press effect. Basic regex is used for validations and text replacements.

For every button(number or operator) pressed, the value is appended to an equation string displayed on the calculator screen which is later used in the JS eval function to generate the output.

The Calculator preview-

Source code download link from Dropbox- Click Here (Size:  5.38 KB)

Thanks.