Using if – else in Javascript
22 Sep
Posted by admin as Javascript Codes, Technology Tips, Trainings
The following if – else conditions in javascript:
if statement – simple if statement, executed when condition is true
if…else statement – statements are executed when condition is true or false
if…else if….else statement - nested if – else statement which can b used for multiple blocks of code
switch statement - simplified nested if – else statement
Syntax
if statment:
if [...]
Here is a sample code on how to extract the mac address of a computer using the powerful javascript. The code will only work for internet explorer only.
<html>
<head>
<meta http-equiv=”Content-Type” content=”text/html; charset=utf-8″ />
<title>Getting MAC Address From Javascript(IE Only)</title>
<script language=”javascript”>
function showMacAddress(){
var obj = new ActiveXObject(“WbemScripting.SWbemLocator”);
var s = obj.ConnectServer(“.”);
var properties = s.ExecQuery(“SELECT * FROM Win32_NetworkAdapterConfiguration”);
var e = new [...]
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