JavaScript global variable updated by onchange event of drop down lists

Example of Global variable in JavaScript. In this program when you select a drop down element then JavaScript function is called and the select element is passed to the function and function updates the global variable inside the function and add the select element’s option element’s value to the global variable and the output is displayed.


Three column fluid layout- middle column centered between 2 columns

The Case Study : This is a simple CSS style sheet code of Kolkata CSS web page layout expert Mr. B Choudhury where he explains the CSS- “three column liquid layout” where the mid column will be centered between left and right columns. Here % width has been used for the columns.