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Why do we use encodeURIComponent?
encodeURIComponent should be used to encode a URI Component – a string that is supposed to be part of a URL. encodeURI should be used to encode a URI or an existing URL.
Is encodeURIComponent necessary?
9 Answers. It depends on what you are actually wanting to do. encodeURI assumes that the input is a complete URI that might have some characters which need encoding in it. If you’re encoding a string to put in a URL component (a querystring parameter), you should call encodeURIComponent .
How do you use encodeURI?
The encodeURI() function is used to encode a URI. This function encodes special characters, except: , / ? : @ & = + $ # (Use encodeURIComponent() to encode these characters). Tip: Use the decodeURI() function to decode an encoded URI.
What is encodeURI () function?
The encodeURI() 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).
When do you use encodeURI in JavaScript?
When accepting an input that may have spaces. When building a URL from query string parameters. When accepting query parameters that may have reserved characters. If you have a complete URL, use encodeURI. But if you have a part of a URL, use encodeURIComponent.
Which is the correct way to encode an URL in JavaScript?
There is a nice explanation of the difference between encodeURI () and encodeURIComponent () elsewhere. If you want to encode something so that it can safely be included as a component of a URI (e.g. as a query string parameter), you want to use encodeURIComponent ().
When to escape characters in an URL encode?
Special characters such as &, space, ! when entered in a url need to be escaped, otherwise they may cause unpredictable situations. User has submitted values in a form that may be in a string format and need to be passed in, such as URL fields. Need to accept query string parameters in order to make GET requests.
How to prepare encoded post data on JavaScript?
A common bug is to use it to create html attributes such as href=’MyUrl’, which could suffer an injection bug. If you are constructing html from strings, either use ” instead of ‘ for attribute quotes, or add an extra layer of encoding (‘ can be encoded as %27).