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

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
}

其他回答

如果你真的只是想让它像安装对话框一样工作,只需要关注“Next”按钮OnLoad。

这样,如果用户点击Return,表单就会提交并继续。如果他们想返回,他们可以按Tab键或点击按钮。

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>

要做到这一点,只需改变制表符顺序即可。保持简单。

另一个简单的选项是将返回按钮放在HTML代码中的提交按钮之后,但将其浮动到左侧,以便它在页面上出现在提交按钮之前。

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>