Inline forms. Use following multiple check box selection example to study the Multiple Checkboxes validation in JavaScript. Examples for different form elements including: text input, checkbox, combo box, radio buttons and checkbox arrays. JavaScript / Ajax / DHTML Forums on Bytes. Hi, I am trying to validate a checkbox selection but my code doesn't work. This document provides an overview of many of the new features for ASP.NET that are included in the.NET Framework 4 and in Visual Studio 2010. Form validation using JavaScript ... " ... //even if a single value is in the msg array CheckBox Validation Using javaScript Checkbox validation: Example