模仿Javascript'警报'阻止性质 [英] Emulate Javascript 'alert' blocking nature

问题描述

是否有可能创建一个自定义模态消息，阻止脚本的执行直到用户输入？

Is it possible to create a custom modal message which 'blocks' the execution of the script until a user input?

例如，如何在不执行此操作的情况下实现此目的使用本机窗口警报/提示功能？

For example, how can you achieve this without using the native window alert / prompt functions?

setInterval(function(){ 
     alert('Click OK to Continue');  // timing stops until user hits ok
},4000);

我知道你可以让你的自定义对话框调用用户输入的回调函数，但我很感兴趣能够强制执行此阻止行为

I know you could have your custom dialog invoke a callback function on user input, but I'm interested in being able to force this blocking behaviour

推荐答案

是否可以创建自定义模式消息阻止脚本执行直到用户输入？

Is it possible to create a custom modal message which 'blocks' the execution of the script until a user input?

否。没有办法像执行弹出窗口一样有效地阻止执行或用户交互（因为使用自定义弹出窗口，用户在技术上总是能够使用开发人员工具来摆脱它）。

No. There is no way to block either execution or user interaction as effectively as a native popup (since with custom popups the user is always technically capable of using developer tools to get out of it).

然而，正如pst在关于这个问题的评论中所说，异步灯箱并不繁琐，并且几乎在阻止用户交互方面与弹出窗口一样有效，所以我建议找一个提供灯箱的库你喜欢并运行它。

However, as pst says in the comments on the question, asynchronous lightboxes are not onerous, and are almost as effective at blocking user interaction as popups, so I recommend finding a library that provides lightboxes you like and running with that.

例如，如何在不使用本机窗口警报/提示功能的情况下实现这一目标？

For example, how can you achieve this without using the native window alert / prompt functions?

您不能使用该代码执行您所说的 with 本机窗口警报/提示功能（请参阅这个小提琴 - 在关闭弹出窗口前等待4秒钟。您需要以下内容：

You can't use that code to do what you say it will even with native window alert / prompt functions (see this fiddle - wait 4 seconds before closing popup). You'd need the following:

function timeoutFunction() {
    alert('Click OK to Continue');  // timing ACTUALLY stops until user hits ok
    setTimeout(timeoutFunction, 4000);
}
setTimeout(timeoutFunction,4000);

在没有原生弹出窗口的情况下，你无法实现这一点（确切地说 - 参见上面的灯箱）。

Which is something that you can't implement (precisely - see above on lightboxes) without native popups.

甚至而（true）循环通常不会像弹出一样阻止 - firefox至少有一个停止脚本消息在消息过长之后弹出，我相当确定其他主流浏览器也会这样做。

Even while(true) loops won't generally block as well as a popup - firefox at least has a "stop script" message that pops up after it's been going too long, and I'm fairly sure other major browsers do too.

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