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jgarber623/complicated_regex_example.js

Created December 1, 2011 19:48
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An obtuse Regular Expression that'll replace indices in input @name and @id attributes in multi-model Rails forms
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complicated_regex_example.js
// RegExplanation: Match last occurrence of "_<string>_" and replace with "_<new_string>_"
some_string.replace( /^(.*)_.+_(.*?)$/, "$1_" + new_fields_index + "_$2" ),
// RegExplanation: Match last occurrence of "][<string>][" and replace with "][<new_string>]["
some_string.replace( /^(.*)\]\[.+\]\[(.*?)$/, "$1\]\[" + new_fields_index + "\]\[$2" )
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