Difference between .split(/\s+/) and .split(“ ”)?

Question

:) First of all, sorry my bady english :p I was taking a look to the next js code fragment:

var classes = element.className.split(/\\s+/);

That c

Answer 1

No, .split(/\s+/), and .split(" ") are different ones. \s+ matches one or more space characters including line breaks where " " matches a single horizontal space character. So .split(/\s+/) splits the input according to one or more space characters and .split(" ") splits the input according to a single space.

Example:

> "foo   bar".split(/\s+/)
[ 'foo', 'bar' ]
> "foo   bar".split(" ")
[ 'foo', '', '', 'bar' ]