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Mastering ServiceNow by Martin Wood

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Rhino – the JavaScript engine powering ServiceNow

JavaScript needs to be interpreted and executed in order for it to do useful work. The functionality that does this in each web browser is the JavaScript engine; it understands the code written on the web page, and executes it to provide the functionality that the developer expects.

The speed and efficiency at which JavaScript engines do this has rapidly increased. Optimizations such as the Just in Time compilation and caching have meant that each browser reacts to events quicker and draws pages faster, providing a slicker, more interactive experience to the user. No one likes to click and wait! Each browser developer is battling to prove themselves as the fastest; at present, Chrome's V8 is the ...

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