Javascript. Javascript must be enabled on the user’s computer in order for users to take advantage of some software features.
Javascript. JavaScript tends to cause older browsers to behave unpredictably and in many cases crash, and there is delicate technology in place to implement the Site Sampler functionality. As a result, the implementation of Java Script in Site Samplers is not an option at this time. - DELIVERY. Content providers should email files to Netscape at destxxxxxxxxxxxx@xxxxxxxx.xxx. Xx you are providing multiple files, you should place them in a folder labeled with the content provider's name. For the best possible results, deliver Site Samplers that are already integrated into a copy of the Net Search page. - FORMAT. All content providers need to provide HTML files that include the layout for their materials. All HTML should be uppercase. Please include the TARGET="_top" attribute in all HREF tags. Height and width tags need to be specified for all images. Graphics files should be in GIF format; all other formats should be cleared with the Destinations production manager at destxxxxxxxxxxxx@xxxxxxxx.xxx. - GRAPHICS. By limiting the number of individual graphics (server calls) in your Site Sampler, you will improve overall page performance and allow the page to load more quickly. Cropping as close as possible to the image, leaving no white space around them, will also allow the page to load more quickly. To minimize dithering and insure that the users across all platforms see what you expect them to see, we recommend use of the Netscape Color Palette.
Javascript. Javascript is a single-threaded language, and the ability to parallelize tasks at the application level is given by the workers. Workers were designed to take advantage of the multicore capabilities of the lower layers. Workers provide parallelism in Javascript by creating threads at the SO level. There is no access to the DOM or any external component to the worker, so it is necessary a communication mechanism to send information between them. The information exchanged by workers is sent by value, so each party works with a copy of the information. This way, there is no need to handle concurrency issues, since the memory is not shared. Workers have event onMessage to communicate, launched by postMessage. It is possible to use addEventListener(), in that case it´s necessary to use the method start() in the port of web worker.
Javascript. To enable a dynamic interaction for the otherwise static (HTML presented) UI, JavaSript (JS)9 is used. JS is a scripting language that enables web browsers to execute client-side scripts which give users dynamic interaction possibilities with the UI. JS provides the functionality to initiate a WebSocket connection, therefore acting as a WebSocket client, which is used to present new information to the end-user without the need of reloading the whole UI but only updating distinct parts of it. Furthermore, with the introduction and implementation of the webRTC (web real time communication10) protocol, it is now possible to use VoIP directly in a browser, without the need for a 3rd party software (usually called a softphone). As this communication path is handled through Javascript, it is possible to embed the calling functionality directly within the user interface, which is a huge improvement to previous approaches via 3rd party software. Finally, as an outlook for future developments, the webRTC protocol also enables the possibility of video data transfer, making it possible to have a live video chat with another party from within the user interface and again, without the need of additional software. 7 xxxx://xxx.x0.xxx/TR/html5/ 8 xxxx://xxx.x0.xxx/TR/CSS/ 10 xxxx://x0x.xxxxxx.xx/webrtc-pc/
6.1 Introduction to this chapter
