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

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>

其他回答

从https://html.spec.whatwg.org/multipage/forms.html implicit-submission

表单元素的默认按钮是树中的第一个提交按钮 它的表单所有者是该表单元素。 如果用户代理支持让用户隐式提交表单 (例如,在某些平台上,在输入文本时按下“enter”键 字段被隐式聚焦提交表单)…

将下一个输入设置为type="submit",并将前一个输入更改为type="button",应该会得到所需的默认行为。

<form>
   <input type="text" name="field1" /> <!-- put your cursor in this field and press Enter -->

   <input type="button" 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>

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 />

纯HTML无法做到这一点。要做到这一点,必须依赖JavaScript。

但是,如果在HTML页面上放置两个表单,则可以做到这一点。

Form1将拥有前面的按钮。

Form2将有任何用户输入+下一个按钮。

当用户在Form2中按下Enter键时,Next提交按钮将触发。

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>

我只是让按钮向右浮动。

这样,Prev按钮在Next按钮的左边,但在HTML结构中Next在前面:

.f { 浮:正确; } .clr { 明确:; } <form action="action" method="get"> <input type="text" name="abc"> < div id = "按钮" > <input type="submit" class="f" name="next" value=" next" > <input type="submit" class="f" name="prev" value=" prev" > < div class = " clr " > < / div > < !这个div可以防止后面的元素随按钮一起浮动。保持他们“内部”div#按钮—> < / div > > < /形式

优于其他建议的优点:没有JavaScript代码,可访问,两个按钮都保持type="submit"。