<form name="searchForm" id="searchForm" onsubmit="doSomething(event)">
   <input type="text" name="search" id="search">
</form>
<script>
   function doSomething(event){
      let $val = $('form#searchForm input[name="search"]').val();
        console.log($val);
      event.preventDefault();
    }
</script>
 One simple way it can be done in this way. Enter text or number, hit enter key and get the entered input value.

我无法让按键事件为进入按钮开火，挠了我的头一段时间，直到我阅读jQuery文档:

当浏览器注册键盘输入时，按键事件被发送给元素。这与按下键事件类似，除了修改器和非打印键(如Shift、Esc和delete)触发按下事件，而不是按下键事件。”(https://api.jquery.com/keypress/)

我必须使用keyup或keydown事件来捕捉按下enter按钮。

您可以连接您自己的自定义事件

$('textarea').bind("enterKey",function(e){
   //do stuff here
});
$('textarea').keyup(function(e){
    if(e.keyCode == 13)
    {
        $(this).trigger("enterKey");
    }
});

http://jsfiddle.net/x7HVQ/

HTML代码:

<input type="text" name="txt1" id="txt1" onkeypress="return AddKeyPress(event);" />      

<input type="button" id="btnclick">

Java脚本代码

function AddKeyPress(e) { 
        // look for window.event in case event isn't passed in
        e = e || window.event;
        if (e.keyCode == 13) {
            document.getElementById('btnEmail').click();
            return false;
        }
        return true;
    }

您的表单没有默认提交按钮

   $('#textbox').on('keypress', function (e) {
         if(e.which === 13){

            //Disable textbox to prevent multiple submit
            $(this).attr("disabled", "disabled");

            //Do Stuff, submit, etc..

            //Enable the textbox again if needed.
            $(this).removeAttr("disabled");
         }
   });

<form name="searchForm" id="searchForm" onsubmit="doSomething(event)">
   <input type="text" name="search" id="search">
</form>
<script>
   function doSomething(event){
      let $val = $('form#searchForm input[name="search"]').val();
        console.log($val);
      event.preventDefault();
    }
</script>
 One simple way it can be done in this way. Enter text or number, hit enter key and get the entered input value.