I am looking for a function that will return true / false if the string in question is complied of any number of spaces. The common method of doing this is `if (string == " ")` but this only works for one space. I need a function that would resolve any number of spaces to a return statement.

example 

```
if (string == " ")
if (string == "  ")
if (string == "   ")
if (string == "    ")
if (string == "     ")

```

What is the best way to do this?