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
有时palotasb提供的解决方案是不够的。有一些用例，例如“Filter”提交按钮被放置在“Next和Previous”按钮之上。我找到了一个解决办法:复制提交按钮，这需要作为默认提交按钮在一个隐藏的div，并把它放在任何其他提交按钮上面的表单。
从技术上讲，当按下Enter时，它将由不同的按钮提交，而不是单击可见的Next按钮。但是由于名称和值是相同的，所以结果没有区别。
<html> <head> <style> div.defaultsubmitbutton { display: none; } </style> </head> <body> <form action="action" method="get"> <div class="defaultsubmitbutton"> <input type="submit" name="next" value="Next"> </div> <p><input type="text" name="filter"><input type="submit" value="Filter"></p> <p>Filtered results</p> <input type="radio" name="choice" value="1">Filtered result 1 <input type="radio" name="choice" value="2">Filtered result 2 <input type="radio" name="choice" value="3">Filtered result 3 <div> <input type="submit" name="prev" value="Prev"> <input type="submit" name="next" value="Next"> </div> </form> </body> </html>
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>
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>
当用鼠标点击按钮时(最好是通过触摸)，它会记录X,Y坐标。当表单调用它时，情况并非如此，这些值通常为零。
所以你可以这样做:
function(e) {
const isArtificial = e.screenX === 0 && e.screenY === 0
&& e.x === 0 && e.y === 0
&& e.clientX === 0 && e.clientY === 0;
if (isArtificial) {
return; // DO NOTHING
} else {
// OPTIONAL: Don't submit the form when clicked
// e.preventDefault();
// e.stopPropagation();
}
// ...Natural code goes here
}
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
