querystring.js

A query string encoder and decoder. It works like the $.param(...) function of jQuery and has the ability to decode the query string. Can be used in Node.js and browser side.

Features:

• Encode & Decode array (nested)
• Encode & Decode object (nested)

API:

• QS.encode(object, [keepArrayIndex])
• QS.decode(string)

Install

If you are using npm, just install x-query-string as a dependency.

npm i x-query-string

Otherwise, you can import the bundle file with script tag directly.

<script scr="path/to/querystring.min.js"></script>

The bundle file also can be used as an AMD module, which means it can be loaded by require.js.

Example

var QS = require('x-query-string');

// a=1&b=2
QS.encode({ a: 1, b: 2 });

// a%5B%5D=1&a%5B%5D=2&a%5B%5D=3 (a[]=1&a[]=2&a[]=3)
QS.encode({ a: [1, 2, 3] });

// a%5Bb%5D%5Bc%5D=3 (a[b][c]=3)
QS.encode({ a: { b: { c: 3 } } });

For npm users, if you just want to include only the encode or decode function, you can do this as the following example.

// include encode only
var encode = require('x-query-string/encode');

Or

// include decode only
var decode = require('x-query-string/decode');

This is helpful when you want to reduce the bundle size of your application when you just use encode or decode.

API

QS.encode(object, [keepArrayIndex])

• object {Object} The data to be encoded to query string
• boolean {keepArrayIndex} Whether to always keep array index in the query string. If the array to be encoded just has one dimension, the index can be omitted. The default value is false.
• Returns: {string} Returns the URI component encoded query string

Encode the data to query string.

var QS = require('x-query-string');

// a%5B%5D=1&a%5B%5D=2 (a[]=1&a[]=2)
QS.encode({ a: [1, 2] });

// a%5B0%5D=1&a%5B1%5D=2 (a[0]=1&a[1]=2)
QS.encode({ a: [1, 2] }, true);

QS.decode(string)

• string {string} The query string to be decoded
• Returns {Object} Returns the decoded data

Decode the query string to a data object. The values in the result data object is string or null. This method will NOT try to parse number or boolean values.

var QS = require('x-query-string');

QS.decode('a[]=1&a[]=2&b=false&c[d]=1&e=&f');
// or (The query string below is url-encoded)
QS.decode('a%5B%5D=1&a%5B%5D=2&b=false&c%5Bd%5D=1&e=&f');

result:

{
    "a": [
        "1",
        "2"
    ],
    "b": "false",
    "c": {
        "d": "1"
    },
    "e": "",
    "f": null
}

License

MIT