The encodeURIComponent() method encodes special characters including: , / ? : @ & = + $ # Use the decodeURIComponent() function to decode an encoded URI component. ... If you want to use W3Schools services as an educational institution, team ...

❮ Previous JavaScript Global Methods Next ❯ · Decode a URI after encoding it: let uri = "https://w3schools.com/my test.asp?name=ståle&car=saab"; let encoded = encodeURIComponent(uri); let decoded = decodeURIComponent(encoded); Try it Yourself » · The decodeURIComponent() method decodes a URI component.

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decodeURI() decodeURIComponent() encodeURI() encodeURIComponent() escape() eval() Infinity isFinite() isNaN() NaN Number() parseFloat() parseInt() String() undefined unescape() JS Intl Namespace JS Iterators

❮ JavaScript Global Functions · Encode a URI: var uri = "https://w3schools.com/my test.asp?name=ståle&car=saab"; var res = encodeURIComponent(uri); Try it Yourself » · The encodeURIComponent() function encodes a URI component. This function encodes special characters.

❮ Previous JavaScript Global Functions Next ❯ · Encode a URI: var uri = "https://w3schools.com/my test.asp?name=stÃ¥le&car=saab"; var res = encodeURIComponent(uri); Try it Yourself » · The encodeURIComponent() function encodes a URI component. This function encodes special characters.

July 8, 2025 - const name = "Ben & Jerry's"; // This is bad: const link = encodeURI(`https://example.com/?choice=${name}`); // "https://example.com/?choice=Ben & Jerry's" console.log([...new URL(link).searchParams]); // [['choice', 'Ben '], [" Jerry's", ''] // Instead: const link = encodeURI( `https://example.com/?choice=${encodeURIComponent(name)}`, ); // "https://example.com/?choice=Ben%20%26%20Jerry's" console.log([...new URL(link).searchParams]); // [['choice', "Ben & Jerry's"]]

January 25, 2015 - JavaScript Global Functions · ... res will be: http://w3schools.com/my test.asp?name=ståle&car=saab Try it Yourself » · The encodeURIComponent() function encodes a URI component....

October 30, 2025 - The encodeURIComponent() function encodes a URI by replacing each instance of certain characters by one, two, three, or four escape sequences representing the UTF-8 encoding of the character (will only be four escape sequences for characters composed of two surrogate characters).

August 19, 2022 - The encodeURIComponent function is used to encodes a Uniform Resource Identifier (URI) component by replacing each instance of certain characters by one, two or three escape sequences representing the UTF-8 encoding of the character. ...

March 15, 2026 - The encodeURIComponent() function accepts a string representing a URI component and encodes it by replacing special characters with percent-encoded sequences. This is essential for safely passing data in URLs.

encodeURIComponent(str) string — The encoded string. URIError — The input contains a lone surrogate. console.log(encodeURIComponent("a b&c=d")); Output · a b&c=d · const q = encodeURIComponent("café/parís"); console.log(q); Output · café/parís · - Escapes everything except `A-Z a-z 0-9 - _ .

The encodeURIComponent() method to encode a URI · The decodeURIComponent() method to decode a URI · decodeURI(uri) decodeURI() is an ECMAScript1 (JavaScript 1997) feature. It is supported in all browsers: ❮ JavaScript Global Methods Next ...

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In JavaScript you can use the encodeURIComponent() function.

June 17, 2026 - Here, encodeURIComponent() replaces =, &, and spaces with encoded equivalents, making it ideal for safely passing single parameters.

August 4, 2020 - When accepting query parameters that may have reserved characters. ```JS let params = encodeURIComponent('mango & pineapple') let url = "http://mysite.com/?search=" + params; //http://mysite.com/?search=mango & pineapple

The encodeURIComponent() function in JavaScript allows you to encode special characters in your query string that would otherwise change the meaning of your query string.

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