How to detect pressing Enter on keyboard using jQuery?

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I would like to detect whether the user has pressed Enter using jQuery.

How is this possible? Does it require a plugin?

EDIT: It looks like I need

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18条回答

抹茶落季

2020-11-22 11:29

I wrote a small plugin to make it easier to bind the "on enter key pressed" a event:

$.fn.enterKey = function (fnc) {
    return this.each(function () {
        $(this).keypress(function (ev) {
            var keycode = (ev.keyCode ? ev.keyCode : ev.which);
            if (keycode == '13') {
                fnc.call(this, ev);
            }
        })
    })
}

Usage:

$("#input").enterKey(function () {
    alert('Enter!');
})

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误落风尘

2020-11-22 11:31

I used $(document).on("keydown").

On some browsers keyCode is not supported. The same with which so if keyCode is not supported you need to use which and vice versa.

$(document).on("keydown", function(e) {
  const ENTER_KEY_CODE = 13;
  const ENTER_KEY = "Enter";
  var code = e.keyCode || e.which
  var key = e.key
  if (code == ENTER_KEY_CODE || key == ENTER_KEY) {
    console.log("Enter key pressed")
  }
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>

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天涯浪人

2020-11-22 11:33
You can do this using the jquery 'keydown' event handle
```
   $( "#start" ).on( "keydown", function(event) {
      if(event.which == 13) 
         alert("Entered!");
    });
```
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天命终不由人

2020-11-22 11:36

In some cases, you may need to suppress the ENTER key for a certain area of a page but not for other areas of a page, like the page below that contains a header <div> with a SEARCH field.

It took me a bit to figure out how to do this, and I am posting this simple yet complete example up here for the community.

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
  <title>Test Script</title>
  <script src="/lib/js/jquery-1.7.1.min.js" type="text/javascript"></script>
  <script type="text/javascript">
    $('.container .content input').keypress(function (event) {
      if (event.keyCode == 10 || event.keyCode == 13) {
        alert('Form Submission needs to occur using the Submit button.');
        event.preventDefault();
      }
    });
  </script>
</head>
  <body>
    <div class="container">
      <div class="header">
        <div class="FileSearch">
          <!-- Other HTML here -->
        </div>
      </div>
      <div class="content">
        <form id="testInput" action="#" method="post">
        <input type="text" name="text1" />
        <input type="text" name="text2" />
        <input type="text" name="text3" />
        <input type="submit" name="Submit" value="Submit" />
        </form>
      </div>
    </div>
  </body>
</html>

Link to JSFiddle Playground: The [Submit] button does not do anything, but pressing ENTER from one of the Text Box controls will not submit the form.

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臣服心动

2020-11-22 11:37

The easy way to detect whether the user has pressed enter is to use key number the enter key number is =13 to check the value of key in your device

$("input").keypress(function (e) {
  if (e.which == 32 || (65 <= e.which && e.which <= 65 + 25)
                    || (97 <= e.which && e.which <= 97 + 25)) {
    var c = String.fromCharCode(e.which);
    $("p").append($("<span/>"))
          .children(":last")
          .append(document.createTextNode(c));
  } else if (e.which == 8) {
    // backspace in IE only be on keydown
    $("p").children(":last").remove();
  }
  $("div").text(e.which);
});

by pressing the enter key you will get result as 13 . using the key value you can call a function or do whatever you wish

        $(document).keypress(function(e) {
      if(e.which == 13) {
console.log("User entered Enter key");
          // the code you want to run 
      }
    });

if you want to target a button once enter key is pressed you can use the code

    $(document).bind('keypress', function(e){
  if(e.which === 13) { // return
     $('#butonname').trigger('click');
  }
});

Hope it help

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深忆病人

2020-11-22 11:38
Try this to detect the Enter key pressed.
```
$(document).on("keypress", function(e){
    if(e.which == 13){
        alert("You've pressed the enter key!");
    }
});
```
See demo @ detect enter key press on keyboard
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