Javascript encodeURI()

Introduction

The Javascript encodeURI() encodes a URI. 

encodeURI(URI)
ParametersMeaning
URI A complete URI.

The encodeURI() function does not encode characters with special meaning for a URI.

encodeURI() escapes all characters except: 

A-Z a-z 0-9 ; , / ? : @ & = + $ - _ . ! ~ * ' ( ) #

The following code shows the difference between encodeURI() and encodeURIComponent(): 

var set1 = ";,/?:@&=+$#"; // Reserved Characters
var set2 = "-_.!~*'()";   // Unreserved Marks
var set3 = "ABC abc 123"; // Alphanumeric Characters + Space

console.log(encodeURI(set1));//w  w w  .  j  av  a2  s.  c  o  m
console.log(encodeURI(set2));
console.log(encodeURI(set3));

console.log(encodeURIComponent(set1));
console.log(encodeURIComponent(set2));
console.log(encodeURIComponent(set3));

Javascript encodeURI() can encode URIs.

It replaces all invalid characters with a special UTF-8 encoding.

The encodeURI() method is designed to work on an entire URI.

encodeURI() does not encode special characters that are part of a URI, such as the colon, forward slash, question mark, and pound sign. 

let uri = "http:// www.java2s.com/illegal value.js#start";
console.log(encodeURI(uri));// w w  w .ja  v  a  2s  .c  o  m
console.log(encodeURIComponent(uri));

The URI methods encodeURI(), encodeURIComponent(), decodeURI(), and decodeURIComponent() replace the escape() and unescape() methods, which are deprecated in the ECMA-262 third edition.




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