Security should always be the priority of every developer no matter what their programming language they are working on. But security has been on the special focus for JavaScript developers because of the security flaws reported on JavaScript and other Ajax based applications. Although the client side is always susceptible to different type of attacks, none of the client side programming languages have the same trouble compared to JavaScript. You can blame the openness of the programming language in terms of development for its insecurity but this is the sole reason why Ajax has become so popular in just a short amount of time. One of the security measures a developer coul