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:) 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 code will split the full classname of and element into an array containing every class... but, what's the difference between using .split(/\s+/), and using .split(" ")? i see the same result...
I tested this with the next simple code in Chrome:
<!DOCTYPE html>
<html>
<body>
<div id="cono" class="clase1 clase2 clase3-xD">
</div>
<script>
var d = document.getElementById("cono");
console.log(d.className);
var classes = d.className.split(" ");
for (i in classes) {
console.log(classes[i]);
}
</script>
</body>
</html>
I have the same result whether i use .split(" ") or .split(/\s+/):
clase1 clase2 clase3-xD
clase1
clase2
clase3-xD
Do they have any relevant difference?
488
The difference between .split(" ") and .split(/\s+/) is:
The regex " "
The regex /\s+/
Short:
" " splits the array at one single space character./\s/ splits the array at every kind of whitespace character+ Matches between one and unlimitted times
152
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' ]
\s captures more types of whitespace than space
From https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions:
Matches a single white space character, including space, tab, form feed, line feed. Equivalent to [ \f\n\r\t\v\u00a0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u2028\u2029\u202f\u205f\u3000].
Also the + means it will match on multiple spaces. So foo bar will produce a different result:
js> 'foo bar'.split(' ')
["foo", "", "", "", "", "", "bar"]
js> 'foo bar'.split(/\s+/)
["foo", "bar"]
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