Microsoft Edge is the new default Windows 10 browser and the company seems to be making great efforts to improve this application. Of course, the ultimate goal is to develop a better browser than the main competing products. 
Recent reports indicate that these efforts seem to be paying off, at least as far as the JavaScript.
One of the main focus points in its development Edge Microsoft was to make JavaScript the fastest in the company mentioned in one Publication today. The company explains that Chakra JavaScript engine it's faster than any other 64-bit browser currently on the market.
To determine how fast Edge is, Microsoft tested its new browser on two different benchmarks, Octane 2.0 and Jet Stream. The tests showed that at both benchmarks, Edge works surprisingly well, scoring better than Firefox and Chrome, but also Internet Explorer.
According to Microsoft's test results, Edge is more than 1,6 times faster than Apple's Jet Stream benchmark, but also 2.25 times faster than Google Chrome in essay of Octane 2.0.
The company also reports that it has run Chrome Channary testing as it thinks its Edge is also beta.
Please note that these tests were performed by Microsoft itself, it only examines JavaScript, not the overall performance. We will probably have to wait for upcoming third party tests before making any conclusions.
Nevertheless, the news is quite encouraging for the difference speedbetween Edge and Internet Explorer only. It seems that with Windows 10, browsing the web can be remarkably faster than if you were using Internet Explorer before.
