Node.js v26.8.2 documentation

Query string#

The node:querystring module provides utilities for parsing and formatting URL query strings. It can be accessed using:

const querystring = require('node:querystring');
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querystring is more performant than <URLSearchParams> but is not a standardized API. Use <URLSearchParams> when performance is not critical or when compatibility with browser code is desirable.

querystring.decode()#

The querystring.decode() function is an alias for querystring.parse().

querystring.encode()#

The querystring.encode() function is an alias for querystring.stringify().

querystring.escape(str)#

• str <string>

The querystring.escape() method performs URL percent-encoding on the given str in a manner that is optimized for the specific requirements of URL query strings.

The querystring.escape() method is used by querystring.stringify() and is generally not expected to be used directly. It is exported primarily to allow application code to provide a replacement percent-encoding implementation if necessary by assigning querystring.escape to an alternative function.

querystring.parse(str[, sep[, eq[, options]]])#

• str <string> The URL query string to parse
• sep <string> The substring used to delimit key and value pairs in the query string. Default: