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    <p>Update:</p> <p>According to <a href="http://jsonpath.googlecode.com/svn/trunk/tests/jsonpath-test-js.html" rel="nofollow noreferrer">the unit tests</a> and <a href="https://stackoverflow.com/a/2003741/278976">this answer</a>, you can embed a regex literal in the expression and it will be evaled. The following is the example from the unit test.</p> <pre><code>$.menu.items[?(@ &amp;&amp; @.label &amp;&amp; /SVG/.test(@.label))].id </code></pre> <p>So, for your example, it would be:</p> <pre><code>$.store.book[ ?( @ &amp;&amp; @.title &amp;&amp; /ord/.test(@.title) ) ].isbn </code></pre> <p>I've used jsonPath for some pretty large json files (2-3MB) and they were the cause of our application slow down. If you're concerned at all about performance, I'd suggest creating a supplementary index for each field the you'd like to search on. Doing this also allows you to weight the relevance value of each field, which is pretty important for getting good search results.</p> <p>Or better yet, if you anticipate that your application may grow, you may want to entertain a server-side search engine (<a href="http://sphinxsearch.com/" rel="nofollow noreferrer">http://sphinxsearch.com/</a> or the SAAS version <a href="http://indexden.com/" rel="nofollow noreferrer">http://indexden.com/</a>).</p> <p>As for you specific problem, the like operator is supposed to be supported. However, I've been able to achieve pretty good performance with just an array of strings (eg. the titles in your data structure) and using plain javascript regex (<a href="http://www.w3schools.com/jsref/jsref_obj_regexp.asp" rel="nofollow noreferrer">http://www.w3schools.com/jsref/jsref_obj_regexp.asp</a>).</p>
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    1. COthanks for your reply. But I could not find a "like" operator in jsonpath? Dis you mean it is not supported?
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    2. COI was wrong. Apparently the LIKE operator wasn't supported. I did, however, find the usage of a regex literal in the jsonPath unit tests. I've updated the answer to link to that usage.
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    3. COPlease be aware that this is using eval to process this solution. So, if you're using user-submitted data for search, which would likely be the case, you're going to have to worry about properly filtering and escaping the input so that malicious users couldn't execute code on other users behalf (or if this jsonPath is running on the server-side via node.js or something).
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