Regular Expressions 101

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/
q[a-z]*
/
m
q matches the character q with index 11310 (7116 or 1618) literally (case sensitive)
Match a single character present in the list below
[a-z]
* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
a-z matches a single character in the range between a (index 97) and z (index 122) (case sensitive)
Global pattern flags
m modifier: multi line. Causes ^ and $ to match the begin/end of each line (not only begin/end of string)
Your regular expression does not match the subject string.Try launching the debugger to find out why.

Regular Expression
No Match

/
/
m

Test String