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- Unit Tests (7)

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/

^([^0-9\s_.]+)+[a-zA-Z]*((\s?)*[a-zA-Z](\s?)*)*$

/

g

^ asserts position at start of the string

1st Capturing Group

([^0-9\s_.]+)+

+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)

A repeated capturing group will only capture the last iteration. Put a capturing group around the repeated group to capture all iterations or use a non-capturing group instead if you're not interested in the data

Match a single character not present in the list below

[^0-9\s_.]

+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)

0-9 matches a single character in the range between 0 (index 48) and 9 (index 57) (case sensitive)

\s matches any whitespace character (equivalent to [\r\n\t\f\v \u00a0\u1680\u2000-\u200a\u2028\u2029\u202f\u205f\u3000\ufeff])

_.

matches a single character in the list _. (case sensitive)Match a single character present in the list below

[a-zA-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)

A-Z matches a single character in the range between A (index 65) and Z (index 90) (case sensitive)

2nd Capturing Group

((\s?)*[a-zA-Z](\s?)*)*

* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)

A repeated capturing group will only capture the last iteration. Put a capturing group around the repeated group to capture all iterations or use a non-capturing group instead if you're not interested in the data

3rd Capturing Group

(\s?)*

* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)

A repeated capturing group will only capture the last iteration. Put a capturing group around the repeated group to capture all iterations or use a non-capturing group instead if you're not interested in the data

\s

matches any whitespace character (equivalent to [\r\n\t\f\v \u00a0\u1680\u2000-\u200a\u2028\u2029\u202f\u205f\u3000\ufeff])? matches the previous token between zero and one times, as many times as possible, giving back as needed (greedy)

Match a single character present in the list below

[a-zA-Z]

a-z matches a single character in the range between a (index 97) and z (index 122) (case sensitive)

A-Z matches a single character in the range between A (index 65) and Z (index 90) (case sensitive)

4th Capturing Group

(\s?)*

* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)A repeated capturing group will only capture the last iteration. Put a capturing group around the repeated group to capture all iterations or use a non-capturing group instead if you're not interested in the data

\s

matches any whitespace character (equivalent to [\r\n\t\f\v \u00a0\u1680\u2000-\u200a\u2028\u2029\u202f\u205f\u3000\ufeff])? matches the previous token between zero and one times, as many times as possible, giving back as needed (greedy)

$ asserts position at the end of the string

Global pattern flags

g modifier: **g**lobal. All matches (don't return after first match)

Your regular expression does not match the subject string.

No Match

/

/

g

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