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I am learning javascript and I am analyzing existing codes.
In my JS reference book, it says to search on a single space use "\s"?
But I have came across the code
obj.match(/Kobe Bryant/);
Instead of using \s, it uses the actual space?
Why doesn't this generate an error?
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Match any specific character in a set Use square brackets [] to match any characters in a set. Use \w to match any single alphanumeric character: 0-9 , a-z , A-Z , and _ (underscore). Use \d to match any single digit. Use \s to match any single whitespace character.
\s stands for “whitespace character”. Again, which characters this actually includes, depends on the regex flavor. In all flavors discussed in this tutorial, it includes [ \t\r\n\f]. That is: \s matches a space, a tab, a carriage return, a line feed, or a form feed.
$ means "Match the end of the string" (the position after the last character in the string).
Find Whitespace Using Regular Expressions in Java The most common regex character to find whitespaces are \s and \s+ . The difference between these regex characters is that \s represents a single whitespace character while \s+ represents multiple whitespaces in a string.
The character class \s does not just contain the space character but also other Unicode white space characters. \s is equivalent to this character class:
[\t\n\v\f\r \u00a0\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u200b\u2028\u2029\u3000]
No. It is perfectly legal to include a literal space in a regex.
However, it's not equivalent - \s will include any whitespace character, including tabs, non-breaking spaces, half-width spaces and other characters, whereas a literal space will only match the regular space character.
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\s matches any whitespace character, including tabs etc. Sure you can use a literal space also without problems. Just like you can use [0-9] instead of \d to denote any digit. However, keep in mind that [0-9] is equivalent to \d whereas the literal space is a subset of \s.
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In addition to normal spaces, \s matches different kinds of white space characters, including tabs (and possibly newline characters, according to configuration). That said, matching with a normal space is certainly valid, especially in your case where it seems you want to match a name, which is normally separated by a normal space.
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