Escaping Lucene Characters using Javascript Regex - Stack Overflow

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I'm using elasticsearch in a NodeJS project, which is breaking upon entering one of the Lucene keywords into the search box. I'm looking for a simple implementation to escape their special characters. Is regex the best way? I've been fiddling with the regex for a bit now, and felt as if there were probably others that have already gone through this process.

I'm using elasticsearch in a NodeJS project, which is breaking upon entering one of the Lucene keywords into the search box. I'm looking for a simple implementation to escape their special characters. Is regex the best way? I've been fiddling with the regex for a bit now, and felt as if there were probably others that have already gone through this process.

• javascript
• regex
• node.js
• lucene

Share Improve this question Follow asked Oct 17, 2014 at 19:19 user2402831user2402831 6731111 silver badges2424 bronze badges

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2 Answers 2

Sorted by: Reset to default 13

Just needed to fiddle more.

var escaped = query.replace(/([\!\*\+\&\|\(\)\[\]\{\}\^\~\?\:\"])/g, "\\$1");    

Globally replace all instances of the chars lucene would yell about with their escaped version.

I updated this to include all elasticsearch & Lucene reserved characters:

var pattern = /([\!\*\+\-\=\<\>\&\|\(\)\[\]\{\}\^\~\?\:\\/"])/g;

var str = "}the+S+entence you want]]to e*scape"

str = str.replace(pattern, "\\$1");

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