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
我认为这是一个简单的解决方法。将Previous按钮类型更改为button，并添加一个新的onclick属性，值为jQuery(this).attr('type'，'submit');
因此，当用户单击Previous按钮时，它的类型将被更改为submit，表单将与Previous按钮一起提交。
<form>
<!-- Put your cursor in this field and press Enter -->
<input type="text" name="field1" />
<!-- This is the button that will submit -->
<input type="button" onclick="jQuery(this).attr('type','submit');" name="prev" value="Previous Page" />
<!-- But this is the button that I WANT to submit -->
<input type="submit" name="next" value="Next Page" />
</form>
其他回答
使用JavaScript(这里是jQuery)，您可以在提交表单之前禁用prev按钮。
$('form').on('keypress', function(event) {
if (event.which == 13) {
$('input[name="prev"]').prop('type', 'button');
}
});
<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
如果默认使用的第一个按钮在各个浏览器中是一致的，那么在源代码中将它们放在正确的位置，然后使用CSS来切换它们的明显位置。
例如，将它们左右浮动以在视觉上切换它们。
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>
将之前的按钮类型更改为这样的按钮:
<input type="button" name="prev" value="Previous Page" />
现在Next按钮将是默认的，另外你也可以添加默认属性，这样你的浏览器就会高亮显示它:
<input type="submit" name="next" value="Next Page" default />
