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encodeURI Function (JavaScript)

Encodes a text string as a valid Uniform Resource Identifier (URI)

encodeURI(URIString)

The required URIString argument is a value representing an encoded URI.

The encodeURI function returns an encoded URI. If you pass the result to decodeURI, the original string is returned. The encodeURI function does not encode the following characters: ":", "/", ";", and "?". Use encodeURIComponent to encode these characters.

The following code first encodes and then decodes a URI.

var uriEncode = encodeURI ("http://www.Not a URL.com");
var uriDecode = decodeURIComponent(uriEncode);

document.write(uriEncode);
document.write("<br/>");
document.write(uriDecode);

// Output:
// http://www.Not%20a%20URL.com
// http://www.Not a URL.com

Supported in the following document modes: Quirks, Internet Explorer 6 standards, Internet Explorer 7 standards, Internet Explorer 8 standards, Internet Explorer 9 standards, Internet Explorer 10 standards, Internet Explorer 11 standards. Also supported Store apps (Windows 8 and Windows Phone 8.1). See Version Information.

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