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KrashLeviathan/regex-negative-lookahead-with-wildcard.md

Created September 1, 2023 13:25
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Regex use case: Locating an HTML element that does NOT contain a given attribute
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regex-negative-lookahead-with-wildcard.md

Negative Lookahead with Wildcard

This regular expression looks for <input> elements in HTML that do not contain the string "fieldSize". Presumably, you might want to look where all such elements are located in a code base so that you can add that attribute to each of them. This could be extended to other use cases as well.

<input(?![\s\S]+fieldSize)[^>]+>
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