I have tested with encodeURIComponent
, decodeURIComponent
and URL
constructor, and the results are
{
"pathname": {
"destroyed": " #.?",
"encoded": "\"<>`{}",
"error": {
"Invalid URL: //": "/",
"Invalid URL: /\\": "\\"
}
},
"key": {
"destroyed": "#&+="
},
"value": {
"destroyed": " #&+"
},
"hash": {
"destroyed": " ",
"encoded": "\"<>`"
},
// /[A-Za-z0-9]/ are excluded.
"notEncoded": {
"encodeURI": "!#$&'()*+,-./:;=?@_~",
"encodeURIComponent": "!'()*-._~",
"escape": "*+-./@_"
}
// encoded with `%${x.charCodeAt(0).toString(16).toUpperCase()}`
"notDecoded": {
"decodeURI": "#$&+,/:;=?@"
}
}
The test is here.
So,
- Reserved characters
;,/?:@&=+$
are not equal. Some are allowed in some scenarios, some are not. And it seems thatencodeURI
is never safe to encode a URI segment. - Path params, e.g.
/:segment/*
on the server-
.
,..
always have wrong meanings, whether percent-encoded or not. AndencodeURIComponent('.')
is indeed.
./^\.{3,}$/
are ok, though.- It seems that escaping by prefixing with
~
is enough.
- It seems that escaping by prefixing with
-
/
, even when encoded, may throw error on some server. Not sure about\
, but it seems to throw error in my test.
-
- Luckily, these are always encoded. I have seen a recent post about the errors.
"<>`{}
- Not sure if non-ASCII (
/[^\x00-\x7F]/
) needs to be encoded. You can try it in my demo, and see if it breaks.
https://encodeuri-plus.netlify.app/
So, I created a library for this,
patarapolw / encodeuri-plus
encodeURI that is safe, and doesn't do too much in a specific scenario
Republished in my blog
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