重写表单的onsubmit动作，调用你的函数，并在后面添加return false，即:

<form onsubmit="javascript:myfunc();return false;" >

因此，覆盖尽可能多的浏览器的最佳解决方案可能是

if (event.which === 13 || event.keyCode === 13 || event.key === "Enter")

在我看来，一个更简单有效的方法应该是:

function onPress_ENTER()
{
        var keyPressed = event.keyCode || event.which;

        //if ENTER is pressed
        if(keyPressed==13)
        {
            alert('enter pressed');
            keyPressed=null;
        }
        else
        {
            return false;
        }
}

整个文档按下回车键:

$(document).keypress(function (e) {
    if (e.which == 13) {
        alert('enter key is pressed');
    }
});

http://jsfiddle.net/umerqureshi/dcjsa08n/3/

有点简单

不要按“Enter”键发送表单:

<form id="form_cdb" onsubmit="return false">

按“Enter”键执行功能:

<input type="text" autocomplete="off" onkeypress="if(event.key === 'Enter') my_event()">

<div class="nav-search" id="nav-search">
        <form class="form-search">
            <span class="input-icon">
                <input type="text" placeholder="Search ..." class="nav-search-input" id="search_value" autocomplete="off" />
                <i class="ace-icon fa fa-search nav-search-icon"></i>
            </span>
            <input type="button" id="search" value="Search" class="btn btn-xs" style="border-radius: 5px;">
        </form>

</div>

<script type="text/javascript">
    $("#search_value").on('keydown', function(e) {
        if (e.which == 13) {
             $("#search").trigger('click');
            return false;
        }
    });
    $("#search").on('click',function(){
        alert('You press enter');
    });
</script>