The methods listed above are synchronous, that is they will block until the result is returned. Just as I summarised the find section above, tools such as lodash can do far more, but in most cases, JavaScript’s built-in filter method will be all you need. MongoDB Documentation Node.js 3. If you want to follow along, this is the example data I will be using.ĭata.json Īs you can see, filter returns an array and it contains both records with the name field that contains the Doe Filter Summary It takes 3 arguments and they are query (also known as a condition), query projection (used for mentioning which fields to include or exclude from the query), and the last argument is the general query options (like limit, skip, etc). Refresh the page, check Medium ’s site status, or find something interesting to read. The find () function is used to find particular data from the MongoDB database. Example Get your own Node. The first argument of the find () method is a query object, and is used to limit the search. filter will return multiple values: all matching values Securing a Full-Stack Node.js and Angular Application with JWT and MongoDB by Roy Levy Mar, 2023 Towards Dev Write Sign up Sign In 500 Apologies, but something went wrong on our end. Node.js MongoDB Query Previous Next Filter the Result When finding documents in a collection, you can filter the result by using a query object.find will return a single value: the first matching value found.Just to be clear finding and filtering produce different results.
If you need to search or filter an array of objects, then this article will show you the most common ways of doing so using JavaScript’s built-in functions. Find and filter arrays in JavaScript and Node.js
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