// parsing:
parseInt("20px"); // 20
parseInt("10100", 2); // 20
parseInt("2e1"); // 2
parseInt(0b10100) // explicit binary 20
// type conversion
Number("20px"); // NaN
Number("2e1"); // 20, exponential notation
Number("010"); // 10
Number("0o10") // 8, explicit octal
parseInt("010"); // 8, implicit octal
parseInt("010", 10); // 10, decimal radix used
// In addition, a widely used construct to perform Numeric type conversion, is the Unary + Operator (p. 72), it is equivalent to using the Number constructor as a function:
+"2e1"; // 20
+"0xF"; // 15
+"010"; // 10
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