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Not only it incorporates more enjoyable design, it is also equipped with error handling logic. In the meantime, let’s walk through some specific code areas to get a better understanding of how this calculator actually works: My code comments should help you understand this code better.

This section defines your HTML document and specifies CSS styling options for your form, form elements, subheadings fonts, and paragraph formatting.

I will refer you to W3 Schools for further reference.

I am not a designer, and you should be able to come up with your own unique design for this exercise.

The Java Script class presented here makes the form validations many times easier.

The script has a catalog of almost all the common validation types built-in.

We start with BMICalculate function, which grabs our input variables entered on the form (weight in pounds, height in feet, and height in inches), and performs actual BMI calculation.

For ‘selections’ like drop down and radio group, use an appropriate validation like ‘dontselect’ or ‘selone_radio’.How difficult would it be to rewrite that calculator in Java Script to embed it on any webpage for people to use?Not that difficult , thought I, remembering happy days of browsing the original, NOT corporate owned, HTML Goodies website in search of the coolest JS mouse-over effects, some 15 years ago.The user should select an option other than this ‘Select One’ item.We already created a BMI (Body Mass Index) Calculator using Excel VBA last month.

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