已禁用按钮仍会侦听单击事件 [英] Disabled button still listens to click event

问题描述

我在表单中遇到问题，我会进行一些jquery验证。如果未填写特定输入字段，则应通过添加禁用属性来禁用前进按钮：

I have a problem in a form where I do some jquery validations. If a specific input field is not filled out, it should disable a "step forward" button by adding a disabled attribute:

if errors
  $('.btn-move-forward').attr("disabled", true)

有效，但我在该按钮上也有一个点击事件：
（coffeescript）

that works but I also have a click event on that button: (coffeescript)

$('.btn-move-forward').click ->
  $('#step2, #step3').toggle()

我希望 .btn-move-forward 在按钮被禁用时不会触发点击事件但它确实!!

I expect .btn-move-forward to not fire the click event when the button is disabled but it does!!

首先：我不明白为什么，因为每个浏览器规范都定义了这不应该发生。无论如何，我试图通过以下方式绕过它：

First: I don't understand why because every browser spec defines that this should not happen. Anyways, I tried to bypass it by doing the following stuff:

$('.btn-move-forward').click ->
  if !$(this).is(:disabled)
    $('#step2, #step3').toggle()

或者

$('.btn-move-forward').click ->
  if $(this).prop("disabled", false)
    $('#step2, #step3').toggle()

或组合这样的事件监听器：

or combining the event listeners like this:

$('.btn-move-forward').on 'click', '.btn-move-forward:enabled', ->
   $('#step2, #step3').toggle()

不，全部这将无法正常工作。该按钮仍然可以作为前进按钮。

No, all of this won't work properly. The button still behaves as a move-forward button.

我想要的是按钮不听 onclick 如果它已被禁用。

All I want is the button not listening to onclick if it is disabled.

推荐答案

已禁用属性仅适用于表单元素。这意味着除非 .btn-move-forward 元素是< button> 或< input type =button> 然后已禁用属性将无效。

The disabled property only applies to form elements. This means that unless the .btn-move-forward element is a <button> or <input type="button"> then the disabled attribute will have no effect.

你可以在这里看到一个使用按钮的工作示例：

You can see a working example using a button here:

$('.btn-move-forward').prop("disabled", true).click(function() {
  console.log('Moving forward...');
})

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<button class="btn-move-forward">Move forward</button>

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