只需从onsubmit处理程序返回false

<form onsubmit="return false;">

或者如果你想要一个中间的处理程序

<script>
var submitHandler = function() {
  // do stuff
  return false;
}
</script>
<form onsubmit="return submitHandler()">

防止“ENTER”提交表单可能会给一些用户带来不便。所以你最好按照下面的步骤来做:

在你的表单标签中写入'onSubmit'事件:

<form name="formname" id="formId" onSubmit="return testSubmit()" ...>
 ....
 ....
 ....
</form>

编写Javascript函数如下:

function testSubmit(){
  if(jQuery("#formId").valid())
      {
        return true;
      }
       return false;

     } 

     (OR)

不管是什么原因，如果你想阻止按Enter键提交表单，你可以用javascript写下面的函数:

    $(document).ready(function() {
          $(window).keydown(function(event){
          if(event.keyCode == 13) {
               event.preventDefault();
               return false;
              }
           });
         });

谢谢。

在我的案例中，这个jQuery JavaScript解决了这个问题

jQuery(function() {
            jQuery("form.myform").submit(function(event) {
               event.preventDefault();
               return false;
            });
}

以下是我的做法:

window.addEventListener('keydown', function(event)
{
    if (event.key === "Enter" && event.target.tagName !== 'TEXTAREA')
    {
        if(event.target.type !== 'submit')
        {
            event.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.

我花了一些时间制作这款跨浏览器，适用于IE8、9、10、Opera 9+、Firefox 23、Safari(PC)和Safari(MAC)

示例:http://jsfiddle.net/greatbigmassive/ZyeHe/

基本代码-通过“onkeypress”附加到您的窗体和传递窗口调用此函数。事件”。

function stopEnterSubmitting(e) {
    if (e.keyCode == 13) {
        var src = e.srcElement || e.target;
        if (src.tagName.toLowerCase() != "textarea") {
            if (e.preventDefault) {
                e.preventDefault();
            } else {
                e.returnValue = false;
            }
        }
    }
}