![]() JavaScript provides us with several methods to easily transfer a string to a primitive number. There are two ways of invoking this method. Using the parseInt method to convert a string to number. When it comes to performance you can use any of the multiply operator or - or +. Unary plus does the exact same steps as normal number coercion used by most built-in methods expecting numbers. ![]() ![]() '00100' < '1' // trueĪs they are both strings so only the first zero of '00100' is compared to '1' and because it's charCode is lower, it evaluates as lower.Īs the RHS is a number, the LHS is converted to number before the comparision. toString () The toString () method takes an integer or floating point number and converts it into a String type. These are ways in JavaScript to convert a string to a number value. Although unary negation ( -) also can convert non-numbers, unary plus is the fastest and preferred way of converting something into a number, because it does not perform any other operations on the number. You should always compare number with number and string with string as the algorithm for dealing with mixed types not easy to remember. Checking that strings are integers is separate to comparing if one is greater or lesser than another. ![]()
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