A UUID function for web developers

Is it possible to introduce a function for getting a system generated UUID through javascript? It has been a long time coming. I am of the opinion this function should be fast-tracked into browsers, since it has been a lingering and deepening hole in the feature set of browsers. 

Maybe at the next meeting of groups of developers of different browsers, a consensus can be made regarding how to add this function, and they can immediately set out to independently roll it out. Having it become a part of an official standards document is a secondary concern.