Regular Expressions 101

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/
(\w+)="(.*?)(?<!\\)"
/
gs
1st Capturing Group
(\w+)
\w
matches any word character (equivalent to [a-zA-Z0-9_])
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
="
matches the characters =" literally (case sensitive)
2nd Capturing Group
(.*?)
.
matches any character
*? matches the previous token between zero and unlimited times, as few times as possible, expanding as needed (lazy)
Negative Lookbehind
(?<!\\)
Assert that the Regex below does not match
\\ matches the character \ with index 9210 (5C16 or 1348) literally (case sensitive)
" matches the character " with index 3410 (2216 or 428) literally (case sensitive)
Global pattern flags
g modifier: global. All matches (don't return after first match)
s modifier: single line. Dot matches newline characters
Your regular expression does not match the subject string.Try launching the debugger to find out why.

Regular Expression
No Match

/
/
gs

Test String