我在这里或其他帖子中找到的所有关于这个主题的答案都有一个缺点，那就是它阻止了表单元素上的实际更改触发器。所以如果你运行这些解决方案，onchange事件也不会被触发。为了克服这个问题，我修改了这些代码，并为自己开发了以下代码。我希望这对其他人有用。 我给了一个类我的表单“prevent_auto_submit”，并添加以下JavaScript:

$(document).ready(function() 
{
    $('form.prevent_auto_submit input,form.prevent_auto_submit select').keypress(function(event) 
    { 
        if (event.keyCode == 13)
        {
            event.preventDefault();
            $(this).trigger("change");
        }
    });
});

你会发现这更简单和有用:D

$(document).on('submit', 'form', function(e){
    /* on form submit find the trigger */
    if( $(e.delegateTarget.activeElement).not('input, textarea').length == 0 ){
        /* if the trigger is not between selectors list, return super false */
        e.preventDefault();
        return false;
    } 
});

I Have come across this myself because I have multiple submit buttons with different 'name' values, so that when submitted they do different things on the same php file. The enter / return button breaks this as those values aren't submitted. So I was thinking, does the enter / return button activate the first submit button in the form? That way you could have a 'vanilla' submit button that is either hidden or has a 'name' value that returns the executing php file back to the page with the form in it. Or else a default (hidden) 'name' value that the keypress activates, and the submit buttons overwrite with their own 'name' values. Just a thought.

你将不得不调用这个函数，它将取消表单的默认提交行为。您可以将它附加到任何输入字段或事件。

function doNothing() {  
var keyCode = event.keyCode ? event.keyCode : event.which ? event.which : event.charCode;
    if( keyCode == 13 ) {


    if(!e) var e = window.event;

    e.cancelBubble = true;
    e.returnValue = false;

    if (e.stopPropagation) {
        e.stopPropagation();
        e.preventDefault();
    }
}

//Turn off submit on "Enter" key

$("form").bind("keypress", function (e) {
    if (e.keyCode == 13) {
        $("#btnSearch").attr('value');
        //add more buttons here
        return false;
    }
});

为了防止在文本区域或输入字段中按enter键时提交表单，请检查submit事件以查找发送该事件的元素类型。

示例1

HTML

<button type="submit" form="my-form">Submit</button>
<form id="my-form">
...
</form>

jQuery

$(document).on('submit', 'form', function(e) {
    if (e.delegateTarget.activeElement.type!=="submit") {
        e.preventDefault();
    }
});

更好的解决方案是，如果没有提交按钮，而使用普通按钮触发事件。这是因为在第一个示例中触发了2个提交事件，而在第二个示例中只触发了1个提交事件。

示例2

HTML

<button type="button" onclick="$('#my-form').submit();">Submit</button>
<form id="my-form">
...
</form>

jQuery

$(document).on('submit', 'form', function(e) {
    if (e.delegateTarget.activeElement.localName!=="button") {
        e.preventDefault();
    }
});