Javascript, abbreviated as JS, is a computer language created by the Netscape computer programming company. Javascript is a computer code of numbers and symbols that cause different functions when used in the compilation of web pages. Javascript can be written into the HTML code of a web browser window or website in order to perform numerous different tasks.

There are different types of JS that perform different functions. Different types of javascript are created when it is combined with other languages, such as when cascading style sheets are combined with javascript to form CSS javascript. The new combination is able to create bold effects when used in dynamic HTML active scripting. A second example of this is PHP javascript; when javascript is combined with a hypertext preprocessor script. The disadvantage of this type is that the javascript leaves no room for error, and will only be displayed correctly if all information is input correctly.

JS menus are activated when the person surfing the internet interacts with the webpages they are viewing. These interactions can include clicking on active links or scrolling over highlighted phrases or words. Javascript allows the clickable link to direct the user to a new page that contains the information they desire. Javascript is also used to activate popup windows and popup ads when the user browses web pages.

Being able to disable popups and the associated javascript can be very useful for many reasons. One is the fact that it can help keep down the amount of viruses that can infect a user’s computer. If a virus is maliciously written and hidden into the HTML code, such as when JS is needed to close a pop up box, then disabling javascript will stop the virus from infecting the user’s computer. This new trend of dropping a virus on a computer is called click-jacking. The virus is written into the script and is activated when the user attempts to close the popup ad window. Disabling the javascript for this reason alone can be extremely useful. Disabling javascript can, of course, stop pop ups from opening in the first place. This is not only perfect for those times that a virus could infect the computer, but also to keep the amount of browser windows that open automatically down to a minimum.

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