小编God*_*ftw的帖子

我最近在一家新公司找到了一份工作，他们的政策是<script>为每个新的 Javascript 功能使用一个新标签，当我问到它时，他们说这是为了防止错误破坏整个页面。

它似乎确实可以防止异常破坏所有其他 Javascript，但我以前从未见过它。这是一种常见的做法，这样做有什么问题吗？

在我的laravel 5应用程序中,有一个功能允许具有admin角色的用户重置任何非管理员的密码,但是这并不会强制该用户注销并再次登录.一旦密码更改,我该如何强制用户注销？我没有对中间件进行任何更改来验证用户或任何东西.

我正在使用以下解决方案：如何检查画布是否为空白？但它不起作用。我的空白画布 URL 与新创建的画布 URL 不匹配，我无法弄清楚原因。它们是相同的尺寸，但它们的 .toDataURL 返回不同的东西，所以我无法判断它是否已被绘制。下面是我在空白画布上执行 .toDataURL 和在 .toDataURL 上执行时发生的情况的示例新创建的画布，如您所见，随着您继续前进，它们会有所不同。

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参考这里是功能：

function isCanvasBlank(canvas) {
    var blank = document.createElement('canvas');
    blank.width = canvas.width;
    blank.height = canvas.height;

    return canvas.toDataURL() == blank.toDataURL();
}