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Are you referring to using the input pattern attribute or do you want to actually prevent those char's from even displaying - i.e. use a JavaScript keydown function to cancel the event if it is one of those characters?
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Are you referring to using the input pattern attribute or do you want to actually prevent those char's from even displaying - i.e. use a JavaScript keydown function to cancel the event if it is one of those characters?

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Dear Julian,<br />
JavaScript keydown function would be great? how can I do that?<br />
how can I my users do not enter Ç,ş,ğ characters?
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Dear Julian,
JavaScript keydown function would be great? how can I do that?
how can I my users do not enter Ç,ş,ğ characters?

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can I also use html input pattern regex for preventing this?
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can I also use html input pattern regex for preventing this?

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I can also use a php replace function to change the characters...<br />
what do you suggest I should do?
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I can also use a php replace function to change the characters...
what do you suggest I should do?

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<div class="content wysiwyg-content">
Dear Experts,<br />
<br />
How can I prevent my users entering ç,ı,Ş,ş,Ç these characters into my text box?<br />
what pattern should I use?<br />
I'm using html5<br />
<br />
&lt;input type=&quot;text&quot; name=&quot;test&quot; id=&quot;test&quot;&gt;
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Dear Experts,

How can I prevent my users entering ç,ı,Ş,ş,Ç these characters into my text box?
what pattern should I use?
I'm using html5

<input type="text" name="test" id="test">

html5 input pattern for some characters

Web development includes all aspects of presenting content on intranets and the Internet, including delivery development, protocols, languages and standards, server software, browser clients, databases and multimedia generation.

Web Development

HTML (HyperText Markup Language) is the main markup language for creating web pages and other information to be displayed in a web browser, providing both the structure and content for what is sent from a web server through the use of tags. The current implementation of the HTML specification is HTML5.