What are the differences between this line:
var a = parseInt("1", 10); // a === 1
and this line
var a = +"1"; // a === 1
This jsperf test shows that the unary operator is much faster in the current chrome version, assuming it is for node.js!?
If I try to convert strings which are not numbers both return NaN:
var b = parseInt("test" 10); // b === NaN
var b = +"test"; // b === NaN
So when should I prefer using parseInt over the unary plus (especially in node.js)???
edit: and what’s the difference to the double tilde operator ~~?
