Converting to number fast way
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
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