#Javascript calculation examples how to
#Javascript calculation examples code

To find its area, you might write the function as follows: function getArea( a, b, c ) // Note the semi-colon here, it's mandatory. But no matter, letвЂ™s continue on and consider how youвЂ™d build some calculations around this вЂњtriangleвЂќ. This simply isnвЂ™t as clear or as usable as it could be. var sideA = 3 ДЄnd there you go, youвЂ™ve got a triangle! But not really, right? YouвЂ™ve really just created three variables that you need to keep track of separately, and a comment to remind yourself what you were thinking. JavaScript Java program to calculate area of Square. You know that triangles in general have three sides, so to deal with a specific triangle the obvious thing to do is to create three variables: // This is a triangle. For example, the following function returns the square of its argument, x, where x is a.

#Javascript calculation examples code

As a trivial example, consider how youвЂ™d write code that did some sort of work with a triangle. The single most important reason to care about objects is their capacity to improve your codeвЂ™s representation of the data and processes youвЂ™re implementing. This code is built up in the explanations below. Note: There is an example available for you to download or run live, which contains code to calculate the area of a triangle, both with and without objects. You might not have noticed it, but youвЂ™ve been implicitly exposed to objects throughout this series at this point in the Web Standards Curriculum, IвЂ™ll give you a more explicit understanding of how objects work in JavaScript, and explain how you can increase the expressiveness and reusability of your code by exploiting them. This ability has very practical impacts upon the code youвЂ™re able to write, even if it sounds a little abstract at the moment.

#Javascript calculation examples how to

This tutorial will show you how to use different form elements like drop-down list, radio button, check box and text box in a calculation. It is quite often required to do calculations online in order forms, request quote forms and the like. Click the Custom calculation script option, and then click the Edit button. Objects enable you to gather together the related bundles of functionality you define as functions, and bind them into a coherent package that you can pass around and refer to as a single item. In this tutorial, we will learn how to perform calculations using JavaScript. On the Forms ribbon, in the Form Fields group, click Text Field. Now that youвЂ™re comfortable with these essential components of JavaScript programming, IвЂ™d like to expand upon their application by introducing objects. The functions article that this follows introduced the concept of functions, teaching you how to better organize and reuse your code by grouping individual activities into logical chunks that you can call whenever you like. This article takes the concept of functions further, looking at how you can encapsulate functions and variables into reusable packages of functionality called objects.