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Javascript regex returning true.. then false.. then true.. etc [duplicate]
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/^[^-_]([a-z0-9-_]{4,20})[^-_]$/gi;
You're using a g (global) RegExp. In JavaScript, global regexen have state: you call them (with exec, test etc.) the first time, you get the first match in a given string. Call them again and ...
File Upload without Form
... is being performed.
– Harry
Mar 6 '19 at 17:04
What about fetch()?
– Vitaly Zdanevich
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How can I match a string with a regex in Bash?
...efault.
– Mark K Cowan
Apr 7 '17 at 19:42
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how to read value from string.xml in android?
....my_value_in_xml)
– Noah Herron
Aug 19 '15 at 0:51
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How to extract the n-th elements from a list of tuples?
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edited Mar 6 '19 at 20:33
cs95
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How do you manage databases in development, test, and production?
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edited Jul 1 '19 at 12:20
community wiki
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How do I create a copy of an object in PHP?
...an be seen from this example: $a = new stdClass; $b =& $a; $a = 42; var_export($b); here $b is a reference to the variable $a; if you replace =& with a normal =, it is not a reference, and still points to the original object.
– IMSoP
Jun 16 '13 at 21:14...
What is a regular expression for a MAC Address?
...e whole MAC address.
– PyFox
Apr 5 '19 at 9:57
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Pandas - Get first row value of a given column
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edited Aug 3 '19 at 19:19
answered Aug 11 '14 at 23:39
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What characters are allowed in DOM IDs? [duplicate]
...ackslash ...
– Bor691
Oct 28 '13 at 19:17
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Regular expression equivalent /^[a-z]+[a-z0-9\-_:\.]*...