Differences between string() and tostring() methods

String() and toString() It is the most commonly used conversion in our daily life js How to get , I don't try to distinguish the difference when I use it at ordinary times , Today I met the record .

Different 1（ Yes undefined and null To deal with ）

Use String Method pair undefined and null Handle , The result will be in string form undefined and null, But use toString The method will directly report an error .

Different 2（ Binary processing of numeric strings ）

toString Method can fill in a parameter , This parameter is a hexadecimal number , for example ：

(10).toString(2)  ==>  '1010'
(10).toString(8)  ==>  '12'