querystring

• const decode: typeof parse

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

• const encode: typeof stringify

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

• function escape(

  str: string

  ): 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.
• function parse(

  str: string,

  sep?: string,

  eq?: string,

  options?: ParseOptions

  ): ParsedUrlQuery;

  The querystring.parse() method parses a URL query string (str) into a collection of key and value pairs.

  For example, the query string 'foo=bar&abc=xyz&abc=123' is parsed into:

  {
    "foo": "bar",
    "abc": ["xyz", "123"]
  }
  

  The object returned by the querystring.parse() method does not prototypically inherit from the JavaScript Object. This means that typical Object methods such as obj.toString(), obj.hasOwnProperty(), and others are not defined and will not work.

  By default, percent-encoded characters within the query string will be assumed to use UTF-8 encoding. If an alternative character encoding is used, then an alternative decodeURIComponent option will need to be specified:

  // Assuming gbkDecodeURIComponent function already exists...
  
  querystring.parse('w=%D6%D0%CE%C4&foo=bar', null, null,
                    { decodeURIComponent: gbkDecodeURIComponent });
  

  @param str

  The URL query string to parse

  @param sep

  The substring used to delimit key and value pairs in the query string.

  @param eq

  The substring used to delimit keys and values in the query string.

• function stringify(

  obj?: ParsedUrlQueryInput,

  sep?: string,

  eq?: string,

  options?: StringifyOptions

  ): string;

  The querystring.stringify() method produces a URL query string from a given obj by iterating through the object's "own properties".

  It serializes the following types of values passed in obj: string | number | bigint | boolean | string[] | number[] | bigint[] | boolean[] The numeric values must be finite. Any other input values will be coerced to empty strings.

  querystring.stringify({ foo: 'bar', baz: ['qux', 'quux'], corge: '' });
  // Returns 'foo=bar&baz=qux&baz=quux&corge='
  
  querystring.stringify({ foo: 'bar', baz: 'qux' }, ';', ':');
  // Returns 'foo:bar;baz:qux'
  

  By default, characters requiring percent-encoding within the query string will be encoded as UTF-8. If an alternative encoding is required, then an alternative encodeURIComponent option will need to be specified:

  // Assuming gbkEncodeURIComponent function already exists,
  
  querystring.stringify({ w: '中文', foo: 'bar' }, null, null,
                        { encodeURIComponent: gbkEncodeURIComponent });
  

  @param obj

  The object to serialize into a URL query string

  @param sep

  The substring used to delimit key and value pairs in the query string.

  @param eq

  . The substring used to delimit keys and values in the query string.

• function unescape(

  str: string

  ): string;

  The querystring.unescape() method performs decoding of URL percent-encoded characters on the given str.

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

  By default, the querystring.unescape() method will attempt to use the JavaScript built-in decodeURIComponent() method to decode. If that fails, a safer equivalent that does not throw on malformed URLs will be used.

Type definitions

• interface ParsedUrlQuery

• interface ParsedUrlQueryInput

• interface ParseOptions

  • decodeURIComponent?: (str: string) => string

    The function to use when decoding percent-encoded characters in the query string.

  • maxKeys?: number

    Specifies the maximum number of keys to parse. Specify 0 to remove key counting limitations.

• interface StringifyOptions

  • encodeURIComponent?: (str: string) => string

    The function to use when converting URL-unsafe characters to percent-encoding in the query string.