按下按钮后更改焦点
我有一个简单的按钮，它调用例程 onClick。 我用来
document.getElementById('Start').disabled=true;
禁用该按钮，这样就无法再次按下它。之后大多数事情都没有问题。在一种情况下，我需要检测按键按下，或者更确切地说，单击按钮后按键释放。我用来
document.onkeyup=WichKeyPressed;
检测按键按下。如果我不禁用该按钮，则效果很好，但如果禁用该按钮，则不起作用。
应该是对焦问题。如果我在屏幕上的空白区域上单击鼠标，无论是否禁用按钮都会检测到按键按下。我尝试过将焦点转移到其他几个元素，但到目前为止还没有成功。我什至给了 BODY 一个 id 并尝试将焦点转移到它，但结果保持不变。
我将不胜感激有关该主题的任何想法。 谢谢。
I have a simple button that calls a routine onClick.
I use
document.getElementById('Start').disabled=true;
to disable the button so it can not be pressed again. On most things there is no problem after that. In one instance I need to detect key presses, or rather key releases once the button is klicked.I use
document.onkeyup=WichKeyPressed;
to detect the key press. This works fine if I do not disable the button, but it does not work if I disable the button.
It must be a focus problem. If I click the mouse on a blank area on the screen, the key press is detected with or without disabling the button. I have tried changing the focus to several other elements, but so far no go. I have even given the BODY an id and tried to change focus to it, but the results remain the same.
I would appreciate any ideas on the subject.
Thank you.
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您可以添加一个 CSS 类并设置一个标志，以防止单击按钮时再次发生该操作，而不是禁用该按钮。
Instead of disabling the button, you could just add a CSS class and set a flag preventing the action from happening again when the button is clicked.