Agreed. I don't think I've ever come anywhere near an application which was significantly slowed down because it did too many float-to-int conversions. Thankful

Agreed. I don't think I've ever come anywhere near an application which was significantly slowed down because it did too many float-to-int conversions. Thankfully, JSLint will complain about people using the bitshift operators in practice. Actually, that's a bit of a lie: when I wrote SHA3 candidates in JS, they were bitwise-operation-heavy and they probably did have slow [ToInt32] calls in the middle of performance-critical loops. But you see my point: I've never seen or written code whose performance would be significantly impacted by writing x | 0 in place of Math.floor(x). Maybe the number of keystrokes is saved, that might be a good argument, but the performance?