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JavaScript decodeURI()

Example

Decode a URI after encoding it:

let uri = "my test.asp?name=ståle&car=saab";

let encoded = encodeURI(uri);

let decoded = decodeURI(encoded);

Definition and Usage

The decodeURI() method decodes a URI.

Note

Use the encodeURI() method to encode a URI

See Also:

The encodeURIComponent() method to encode a URI

The decodeURIComponent() method to decode a URI

Syntax

decodeURI(uri)

Parameters

Parameter Description

uri                 Required.

The URI to decode.

Return Value

Type Description

A string The decoded URI.

Browser Support

decodeURI() is an ES1 feature (JavaScript 1997). It is fully supported in all browsers:

Chrome

IE           Yes

Edge   Yes

Firefox   Yes

Safari   Yes

Opera        Yes

all are browsers supported

1. Overview of encodeURI() function

The encodeURI() function is used to encode a URI.

This function encodes special characters, except: , / ? : @ & = + $ # (Use encodeURIComponent() to encode these characters).

Note : Use the decodeURI() function to decode an encoded URI.

2. Overview of decodeURI() function

The decodeURI() function is used to decode a URI.

Note: Use the encodeURI() function to encode a URI.

3. encodeURI() and decodeURI() function 

example

Let's first encode using encodeURI() method and then decode it using decodeURI() function.

var uri = 'https://javaguides.net/?x=шеллы';

console.log("before encode :: " + uri);

var encoded = encodeURI(uri);

console.log("after encode :: " + encoded);

try {

    var decoded = decodeURI(encoded);

    console.log();

    console.log("after decode :: " + decoded);

} catch(e) { // catches a malformed URI

    console.error(e);

}

Output:

before encode :: https://javaguides.net/?x=шеллы

after encode :: https://javaguides.net/?x=%D1%88%D0%B5%D0%BB%D0%BB%D1%8B

after decode :: https://javaguides.net/?x=шеллы

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