Detect enter key pressed using javascript

Question

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Javascript capture key

I'm working on reply function using mysql and php.

My MySQL db:

reply:
  rid - id;
  topicid - under which topic;
  uid - id of the guy who replies;
  content - what did the guy said.

Here's my html code:

<form id="replyform">
  <textarea name="rplcont" placeholder="Press enter to submit your reply."><textarea>
</form>

My question is: How do I know if enter button is pressed?

Many thanks.

/----------------------------------------------/

here's my codes that work:

html:

<textarea id="reply" name="reply" onKeyPress="enterpressalert(event, this)"></textarea>

js:

function enterpressalert(e, textarea){
var code = (e.keyCode ? e.keyCode : e.which);
if(code == 13) { //Enter keycode
 alert('enter press');
}
}

and it works.

Thanks for everyone who concerns this topic!

Dups everywhere! http://stackoverflow.com/search?q=enter+key+javascript — elclanrs, Jan 10 '13 at 05:58
You will find related info here: http://stackoverflow.com/questions/239082/javascript-login-form-doesnt-submit-when-user-hits-enter — Vishal Suthar, Jan 10 '13 at 06:12
@VishalSuthar: Thanks, u are really generous. I'm reading it right now.. — Matt, Jan 10 '13 at 06:30
if(code == 13) { alert('You pressed Enter, the unlucky number!') } — Supercolbat, Dec 26 '16 at 01:11

score 64 · Accepted Answer · edited Mar 08 '16 at 18:20

64

var code = (e.keyCode ? e.keyCode : e.which);
if(code == 13) { //Enter keycode
    alert('enter press');
}

edited Mar 08 '16 at 18:20

Mathew Berg

answered Jan 10 '13 at 05:59

Arun Killu

thanks for reply! I edit your code a little bit.. function doit(e, textarea){ ... // your code } – Matt Jan 10 '13 at 07:22
13

`e.keyCode` is now deprecated. Mozilla recommends using `if (e.code === "Enter")`, even though Microsoft browsers lack support. https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/code – Tomaso Albinoni Nov 16 '19 at 18:25

1 Answers1