I found the same situation using a submit button in a form using a bootstrap (v4.4.1) class. The problem arose as I was building a single-page user interface using JavaScript to manipulate all the required changes to the DOM. The form data was submitted to the server via 'fetch' using a JSON string rather than a HTTP POST request. Note that usually the form's default behaviour is to reload the document, and normally this would refresh the button, however the form's default behaviour was prevented by using e.preventDefault() in the listener function for the form's submit event (it is a single-page UI so the document is never reloaded and traffic to the server is minimised to data only). Given the document was not reloaded the button appeared to stay depressed until the user clicked elsewhere in the window. This is what I had (with the problem):

<输入类型=“submit”类=“btn btn-primary”>

这是我用来解决按钮一直按下的问题:

<input type=“submit” class=“btn btn-primary” onmouseup=“this.blur（）”>

有点核，但这是我在Angular 9上工作的简单方法。使用与因果关系，因为它影响每个html元素。

*:focus {
  outline: 0 !important;
}

我找到了解决办法。 当我们聚焦时，bootstrap使用box-shadow，所以我们只是禁用它(声誉不够，无法上传图像:)。

我添加

.btn:focus{
    box-shadow:none !important;
}

它的工作原理。

I found the same situation using a submit button in a form using a bootstrap (v4.4.1) class. The problem arose as I was building a single-page user interface using JavaScript to manipulate all the required changes to the DOM. The form data was submitted to the server via 'fetch' using a JSON string rather than a HTTP POST request. Note that usually the form's default behaviour is to reload the document, and normally this would refresh the button, however the form's default behaviour was prevented by using e.preventDefault() in the listener function for the form's submit event (it is a single-page UI so the document is never reloaded and traffic to the server is minimised to data only). Given the document was not reloaded the button appeared to stay depressed until the user clicked elsewhere in the window. This is what I had (with the problem):

<输入类型=“submit”类=“btn btn-primary”>

这是我用来解决按钮一直按下的问题:

<input type=“submit” class=“btn btn-primary” onmouseup=“this.blur（）”>

如果以上方法对你不起作用，试试下面的方法:

.btn:焦点{轮廓:无;框影:无;边框:2px实体 透明;}

正如user1933897所指出的，这可能是针对MacOS和Chrome的。

与TS溶液反应

  const btnRef = useRef<HTMLButtonElement | null>(null);
  const handleOnMouseUp = () => {
    btnRef.current?.blur();
  };
  
  <button
    ref={btnRef}
    onClick={handleOnClick}
    onMouseUp={handleOnMouseUp}
  >
    <span className="icon-plus"></span> Add Page
  </button>