Useful JS Tips

#23 - Converting to number fast way

2016-01-23 by @sonnyt

Converting strings to numbers is extremely common. The easiest and fastest (jsPerf) way to achieve that would be using the + (plus) operator.

var one = '1';

var numberOne = +one; // Number 1

You can also use the - (minus) operator which type-converts the value into number but also negates it.

var one = '1';

var negativeNumberOne = -one; // Number -1