一种完全不同的方法:

The first <button type="submit"> in the form will be activated on pressing Enter. This is true even if the button is hidden with style="display:none; The script for that button can return false, which aborts the submission process. You can still have another <button type=submit> to submit the form. Just return true to cascade the submission. Pressing Enter while the real submit button is focussed will activate the real submit button. Pressing Enter inside <textarea> or other form controls will behave as normal. Pressing Enter inside <input> form controls will trigger the first <button type=submit>, which returns false, and thus nothing happens.

因此:

<form action="...">
  <!-- insert this next line immediately after the <form> opening tag -->
  <button type=submit onclick="return false;" style="display:none;"></button>

  <!-- everything else follows as normal -->
  <!-- ... -->
  <button type=submit>Submit</button>
</form>

进入你的css，把它添加进去，然后会自动阻止公式的提交，只要你有提交输入，如果你不再需要它，你可以删除它，或者输入activate和deactivate

 input:disabled {
        background: gainsboro;
      }
      input[value]:disabled {
        color: whitesmoke;
      }

在我对其他解决方案感到沮丧之后，这在所有浏览器中都有效。name_space外层函数只是为了避免声明全局变量，这也是我推荐的。

$(function() {window.name_space = new name_space();}); //jquery doc ready
function name_space() {
    this.is_ie = (navigator.userAgent.indexOf("MSIE") !== -1);

    this.stifle = function(event) {
        event.cancelBubble;
        event.returnValue = false;
        if(this.is_ie === false) {
            event.preventDefault();
        }
        return false;
    }

    this.on_enter = function(func) {
        function catch_key(e) {
            var enter = 13;
            if(!e) {
                var e = event;
            }
            keynum = GetKeyNum(e);
            if (keynum === enter) {
                if(func !== undefined && func !== null) {
                    func();
                }
                return name_space.stifle(e);
            }
            return true; // submit
        }

        if (window.Event) {
            window.captureEvents(Event.KEYDOWN);
            window.onkeydown = catch_key;
        }
        else {
            document.onkeydown = catch_key;
        }

        if(name_space.is_ie === false) {
            document.onkeypress = catch_key;    
        }
    }
}

示例使用:

$(function() {
    name_space.on_enter(
        function () {alert('hola!');}
    );
});

一种完全不同的方法:

The first <button type="submit"> in the form will be activated on pressing Enter. This is true even if the button is hidden with style="display:none; The script for that button can return false, which aborts the submission process. You can still have another <button type=submit> to submit the form. Just return true to cascade the submission. Pressing Enter while the real submit button is focussed will activate the real submit button. Pressing Enter inside <textarea> or other form controls will behave as normal. Pressing Enter inside <input> form controls will trigger the first <button type=submit>, which returns false, and thus nothing happens.

因此:

<form action="...">
  <!-- insert this next line immediately after the <form> opening tag -->
  <button type=submit onclick="return false;" style="display:none;"></button>

  <!-- everything else follows as normal -->
  <!-- ... -->
  <button type=submit>Submit</button>
</form>

$(document).on("keydown","form", function(event)
{
   node = event.target.nodeName.toLowerCase();
   type = $(event.target).prop('type').toLowerCase();

   if(node!='textarea' && type!='submit' && (event.keyCode == 13 || event.keyCode == 169))
   {
        event.preventDefault();
        return false;
    }
});

它工作得很完美!

禁止在任何地方输入键

如果你的表单中没有<textarea>，那么只需将以下内容添加到你的<form>:

<form ... onkeydown="return event.key != 'Enter';">

或者使用jQuery:

$(document).on("keydown", "form", function(event) { 
    return event.key != "Enter";
});

这将导致表单内的每一次按键都将在该键上进行检查。如果它不是Enter，那么它将返回true，一切照常进行。如果它是Enter，那么它将返回false，任何事情都将立即停止，因此表单将不会提交。

keydown事件优先于keyup事件，因为keyup事件太晚而无法阻止表单提交。历史上也有按键，但这已弃用，KeyboardEvent.keyCode也是如此。你应该使用KeyboardEvent。键，返回所按键的名称。当选中Enter时，这将检查13(正常输入)和108 (numpad输入)。

请注意，在其他一些答案中建议的$(window)而不是$(document)在IE<=8中的keydown/keyup中不起作用，所以如果你想覆盖那些贫穷的用户，这不是一个好的选择。

只允许在文本区域输入键

如果你在你的表单中有一个<textarea>(当然应该接受Enter键)，然后添加keydown处理程序到每个不是<textarea>的单独输入元素。

<input ... onkeydown="return event.key != 'Enter';">
<select ... onkeydown="return event.key != 'Enter';">
...

为了减少样板文件，最好使用jQuery:

$(document).on("keydown", ":input:not(textarea)", function(event) {
    return event.key != "Enter";
});

如果在这些输入元素上附加了其他事件处理程序函数，出于某种原因也想在enter键上调用这些函数，那么只防止事件的默认行为，而不是返回false，这样它就可以正确地传播到其他处理程序。

$(document).on("keydown", ":input:not(textarea)", function(event) {
    if (event.key == "Enter") {
        event.preventDefault();
    }
});

允许输入键在文本区域和提交按钮

如果你想允许提交按钮上的输入键<input|button type="submit">，那么你总是可以像下面那样细化选择器。

$(document).on("keydown", ":input:not(textarea):not(:submit)", function(event) {
    // ...
});

请注意，在其他一些答案中建议的输入[type=text]不包括那些HTML5非文本输入，所以这不是一个好的选择器。