How do I test for no whitespaces in a string, using regex? I'm using JQuery
var postcode = $(this), val = postcode.val();
if(val.test(NO WHITESPACE)){
...
}
Any help is appreciated, Thanks
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1If you were just looking for space characters, it would have saved some time and confusion if you had been more specific in the question.Pointy– Pointy2011-04-07 15:55:48 +00:00Commented Apr 7, 2011 at 15:55
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5 Answers
if (/\s/.test(string)) alert("OH NO THERE IS FILTHY WHITESPACE IN THAT STRING");
The "\s" ... uhh, thing, in a regex means "any whitespace character". Specifically, it means the same as this:
[ \f\n\r\t\v\u00A0\u2028\u2029]
which is to say, space, form feed, line feed, carriage return, tab, vertical tab, and some space-like characters from extended Latin and Unicode.
Comments
If it's only spaces, you don't need a RegExp: no spaces = val.indexOf(' ') < 0
2 Comments
Dirk Schumacher
What about other forms of Whitespace like Tab characters, newlines, ...?
KooiInc
In that case a regular expression is the better tool: no whitespace in string =>
val.match(/\s/g) === nullJust use:
if(!val.match(/\s/)) {
...
}
Comments
Use the following code this would replace all the blank spaces..
string.replace(/^\s+|\s+$/g,'')
In fact it would remove even newline characters
The spaces are actually removed by \s
1 Comment
Toto
This will not remove
all the white spaces but only those at the begining and at the end of the string. And more, this doesn't answer the question.var valid = !/\s/.test('IHaveNoWhiteSpace')
valid ; //# => true
var valid = !/\s/.test('I Have WhiteSpace')
valid ; //# => false
var isValidPostCode = /^[a-z]{2}\d{3}[a-z]{2}$/i.test('TN809EX');
isValidPostCode ; //# => false
