Restrict input for some characters through HTML onkeypress

Question

I am trying to restrict user's input if user is trying to type some characters (like space). To do so I found this post.

But I wanted to make it through HTML's onkeypress attribute. And faced with problem, that if I specify function to return false, then nothing will happen, but if I return false right in HTML's attribute - input won't happen.

I can't understand what am I doing wrong. Can you please tell me how to solve this?

function doMatch() {
  return false;  
}

$('#test').keypress(function() {
  //return false;   
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<input type="text" onkeypress="doMatch();" id="test"/>

Buzinas · Accepted Answer · 2015-10-02 11:38:34Z

1

But I wanted to make it through HTML's onkeypress attribute.

I recommend you to not do that, since it's better to keep the Javascript behavior out of your HTML code. The name os this technique is Unobstrusive Javascript.

But if you really want to do that, you must use the return keyword to make it work:

<input type="text" onkeypress="return doMatch();" id="test"/>

answered Oct 2, 2015 at 11:38

Buzinas

11.8k2 gold badges38 silver badges59 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Ripun · Accepted Answer · 2015-10-02 11:39:12Z

0

You just need to add return before doMatch();

function doMatch() {
  return false;  
}

$('#test').keypress(function() {
  //return false;   
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<input type="text" onkeypress="return doMatch();" id="test"/>

answered Oct 2, 2015 at 11:39

Ripun

2105 silver badges16 bronze badges

Collectives™ on Stack Overflow

Restrict input for some characters through HTML onkeypress

2 Answers 2

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related