假设您在HTML表单中创建了一个向导。一个按钮后退，一个按钮前进。因为当您按Enter键时，返回按钮首先出现在标记中，它将使用该按钮提交表单。
例子:
< >形式 <！—将光标移至该字段，按“Enter”。—> <input type="text" name="field1" /> <！这是提交的按钮——> <input type="submit" name="prev" value="Previous Page" /> <！——但这是我想提交的按钮——> <input type="submit" name="next" value=" next Page" /> > < /形式
我想要确定当用户按Enter键时使用哪个按钮提交表单。这样，当您按下Enter键时，向导将移动到下一页，而不是上一页。你必须使用tabindex来做这个吗?
当前回答
用你给的例子:
<form>
<input type="text" name="field1" /><!-- Put your cursor in this field and press Enter -->
<input type="submit" name="prev" value="Previous Page" /> <!-- This is the button that will submit -->
<input type="submit" name="next" value="Next Page" /> <!-- But this is the button that I WANT to submit -->
</form>
如果您点击“上一页”，只会提交“prev”的值。如果你点击“下一页”，只有“下一页”的值会被提交。
但是，如果您在表单的某个地方按下Enter键，则“上一页”和“下一页”都不会提交。
所以使用伪代码你可以做到以下几点:
If "prev" submitted then
Previous Page was click
Else If "next" submitted then
Next Page was click
Else
No button was click
其他回答
我将使用JavaScript提交表单。该函数将由表单元素的OnKeyPress事件触发，并检测是否选择了Enter键。如果是这种情况，它将提交表单。
这里有两页给出了如何做到这一点的技巧:1、2。基于这些，下面是一个用法示例(基于这里):
<SCRIPT TYPE="text/javascript">//<!--
function submitenter(myfield,e) {
var keycode;
if (window.event) {
keycode = window.event.keyCode;
} else if (e) {
keycode = e.which;
} else {
return true;
}
if (keycode == 13) {
myfield.form.submit();
return false;
} else {
return true;
}
}
//--></SCRIPT>
<INPUT NAME="MyText" TYPE="Text" onKeyPress="return submitenter(this,event)" />
如果你在一个页面上有多个活动按钮，你可以这样做:
将您想要在Enter键上触发的第一个按钮标记为表单上的默认按钮。对于第二个按钮，将其关联到键盘上的退格键。Backspace eventcode是8。
$(document).on("keydown", function(event) { if (event.which.toString() == "8") { var findActiveElementsClosestForm = $(document.activeElement).closest("form"); if (findActiveElementsClosestForm && findActiveElementsClosestForm.length) { $("form#" + findActiveElementsClosestForm[0].id + " .secondary_button").trigger("click"); } } }); <script src="https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.2.1.min.js"></script> <form action="action" method="get" defaultbutton="TriggerOnEnter"> <input type="submit" id="PreviousButton" name="prev" value="Prev" class="secondary_button" /> <input type="submit" id='TriggerOnEnter' name="next" value="Next" class="primary_button" /> </form>
可以使用Tabindex来解决这个问题。此外，改变按钮的顺序将是实现这一目标的更有效方法。
更改按钮的顺序，并添加浮动值，将它们分配到您希望在HTML视图中显示的所需位置。
<input type="submit" name="prev" value="Previous Page">
<input type="submit" name="prev" value="Next Page">
保持所有提交按钮的名称相同:“prev”。
唯一的区别是具有唯一值的value属性。在创建脚本时，这些惟一的值将帮助我们确定按下了哪个提交按钮。
并编写以下代码:
btnID = ""
if Request.Form("prev") = "Previous Page" then
btnID = "1"
else if Request.Form("prev") = "Next Page" then
btnID = "2"
end if
我用这种方法解决了一个非常相似的问题:
If JavaScript is enabled (in most cases nowadays) then all the submit buttons are "degraded" to buttons at page load via JavaScript (jQuery). Click events on the "degraded" button typed buttons are also handled via JavaScript. If JavaScript is not enabled then the form is served to the browser with multiple submit buttons. In this case hitting Enter on a textfield within the form will submit the form with the first button instead of the intended default, but at least the form is still usable: you can submit with both the prev and next buttons.
工作的例子:
<html> <head> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script> </head> <body> <form action="http://httpbin.org/post" method="post"> If JavaScript is disabled, then you CAN submit the form with button1, button2 or button3. If you press enter on a text field, then the form is submitted with the first submit button. If JavaScript is enabled, then the submit typed buttons without the 'defaultSubmitButton' style are converted to button typed buttons. If you press Enter on a text field, then the form is submitted with the only submit button (the one with class defaultSubmitButton) If you click on any other button in the form, then the form is submitted with that button's value. <br /> <input type="text" name="text1" ></input> <button type="submit" name="action" value="button1" >button 1</button> <br /> <input type="text" name="text2" ></input> <button type="submit" name="action" value="button2" >button 2</button> <br /> <input type="text" name="text3" ></input> <button class="defaultSubmitButton" type="submit" name="action" value="button3" >default button</button> </form> <script> $(document).ready(function(){ /* Change submit typed buttons without the 'defaultSubmitButton' style to button typed buttons */ $('form button[type=submit]').not('.defaultSubmitButton').each(function(){ $(this).attr('type', 'button'); }); /* Clicking on button typed buttons results in: 1. Setting the form's submit button's value to the clicked button's value, 2. Clicking on the form's submit button */ $('form button[type=button]').click(function( event ){ var form = event.target.closest('form'); var submit = $("button[type='submit']",form).first(); submit.val(event.target.value); submit.click(); }); }); </script> </body> </html>
