Eh... I'm getting tired of this "x is faster than y" business. JavaScript might be fast in these examples, but that doesn't mean it's faster at everything. Comparing programming languages is fruitless. X might be faster than Y at Z, but that does not mean X is better suited than Y for all applications.
JavaScript is faster than MatLAB etc in these examples, but as mentioned already it's slower at matrix multiplication and I'm sure that's just one example.
Does JavaScript have tonnes of libs? Does it have type-checking? Does it have all those other things that I would be desperate for if I was performing important calculations? Can I distribute the computing easily? Etc, etc.
Let's stop comparing programming languages as if they're one tool to do one job. Different programming languages have different applications and are suited for different jobs.
JavaScript is faster than MatLAB etc in these examples, but as mentioned already it's slower at matrix multiplication and I'm sure that's just one example.
Does JavaScript have tonnes of libs? Does it have type-checking? Does it have all those other things that I would be desperate for if I was performing important calculations? Can I distribute the computing easily? Etc, etc.
Let's stop comparing programming languages as if they're one tool to do one job. Different programming languages have different applications and are suited for different jobs.