Apparently, this is harder to find than I thought it would be. And it even is so simple...
Is there a function equivalent to PHP's htmlspecialchars built into Javascript? I know it's fairly easy to implement that yourself, but using a built-in function, if available, is just nicer.
For those unfamiliar with PHP, htmlspecialchars translates stuff like <htmltag/>
into <htmltag/>
I know that escape()
and encodeURI()
do not work this way.
In my html source code I have some special symbols like the copyright one <meta content="© Copyright... />
For some text editors these are shown correctly as above, but on VS Code I see it as � and after I save the file, the symbol will be shown as � and � on other editors.
If I explicitly paste the © on VS Code and save it, then on another text editor it will be saved as ©.
How can I solve this? What should I do?
How do I write the CC logo in HTML, is there something like ©
(which gives ©)?
(CC stands for Creative Commons).
I am migrating a Framework v3.5 version to v4.5 and updating the System.Data.OracleClient
with ODP.NET from Oracle.
In one part of the app, it is getting some value from QueryString, doing a Server.HtmlEncode
and pushing into an oracle select statement where clause and running the statement through ODP.NET.
Now the problem is, it was working previously with the System.Data.OracleClient
, but getting invalid identifier from Oracle with ODP.NET. Runs fine if I remove the Server.HtmlEncode
but I am not allowed to expose the raw data to Oracle for security.
Need help!
Imports Oracle.DataAccess.ClientstrStateIDs = Trim(Server.HtmlEncode(Context.Request.QueryString("STATE_IDS")))strLVQuery = "SELECT <some columns> WHERE <some condition> AND <some column> IN (" & strInitStateIDs & ") ORDER BY <some columns>"OracleDA.SelectCommand.CommandType = CommandType.TextOracleDA.Fill(dataTable)
Sample Data in strStateIDs
:
Without Server.HtmlEncode
:
'ABC','XYZ','BLAH_BLAH'
After Server.HtmlEncode
:
'ABC','XYZ','BLAH_BLAH'
SOLUTION:
Posting it as it might help someone later.. As Antonio Bakula pointed out, HtmlEncode
encodes single quotes since ASP.NET 4.0
So, I did strStateIDs = strStateIDs.Replace("'", "'")
after HtmlEncode
to work around this issue.
Every time a user posts something containing <
or >
in a page in my web application, I get this exception thrown.
I don't want to go into the discussion about the smartness of throwing an exception or crashing an entire web application because somebody entered a character in a text box, but I am looking for an elegant way to handle this.
Trapping the exception and showing
An error has occurred please go back and re-type your entire form again, but this time please do not use <
doesn't seem professional enough to me.
Disabling post validation (validateRequest="false"
) will definitely avoid this error, but it will leave the page vulnerable to a number of attacks.
Ideally: When a post back occurs containing HTML restricted characters, that posted value in the Form collection will be automatically HTML encoded.So the .Text
property of my text-box will be something & lt; html & gt;
Is there a way I can do this from a handler?
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