CODEWITHSUNDEEP
javascriptregex
romeuBraga
romeuBraga

Reputation: 2165

Regexp - only complete words and not after a specific character

I'm trying to find complete words in a string, but I'm having trouble where the word occurs after hyphen. How do I create the regex to ignore the words that occur after hyphen?

var text = "google e-google alphagooglebeta google google";
var word = "google";
var regex = new RegExp("\\b" + word + "\\b", "g");
var result = text.replace(regex, "SUCCESS");

output: "SUCCESS e-SUCCESS alphagooglebeta SUCCESS SUCCESS"
expected output: "SUCCESS e-google alphagooglebeta SUCCESS SUCCESS"

Upvotes: 1

Views: 50

Answers (1)

anubhava
anubhava

Reputation: 785256

You can use:

var text = "google e-google alphagooglebeta google google";
var word = "google";
var regex = new RegExp("(^|\\s)" + word + "(?=\\s|$)", "g");
var result = text.replace(regex, "$1SUCCESS");

console.log(result);
//=> SUCCESS e-google alphagooglebeta SUCCESS SUCCESS

Regex /(^|\s)google(?=\s|$)/ matches google if it is preceded by start or whitespace. We capture this part in a capturing group.

(?=\s|$) is zero-width lookahead assertion that asserts that we have a whitespace or line end ahead.

Upvotes: 2

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