Function getHashParameter

getHashParameter(parameterName): string
JMap.History.getHashParameter

Returns a JS object that contains all key / value entries present in the hash of the url.

Returns an empty string if parameter's not found.
Parameters
- parameterName: string
Returns string
Throws
Error if parameterName is not a valid string

Example
```
// Ex. url = ***http://localhost:8080/services/ng#ngProjectId=0&myvar=test***

JMap.History.getHashParameter("myvar")
// returns "test"

JMap.History.getHashParameter("myvardoesntexist")
// returns ""
```