在Safari，iOS上使用History API后发出警报，确认并提示不起作用 [英] Alert, confirm, and prompt not working after using History API on Safari, iOS
问题描述
在iOS上的Safari中调用history.pushState后，使用浏览器的后退按钮改回时，将无法再使用alert()，confirm()或prompt().
After calling history.pushState in Safari on iOS, it's no longer possible to use alert(), confirm() or prompt(), when using the browser back button to change back.
这是iOS错误吗?有任何已知的解决方法吗?
Is this an iOS bug? Are there any known workarounds?
重现此行为的简单示例:
Simple example to reproduce this behavior:
<html>
<body>
<ul>
<li>Step 1: <button onclick="alert(Math.random())">Confirm Alert is working</button></li>
<li>Step 2: <button onclick="history.pushState(null, null, '/debug/'+Math.random());">Change History</button></li>
<li>Step 3: use your browser back button, to go back</li>
<li>Step 4: <button onclick="alert(Math.random())">Alert is not working anymore</button></li>
</ul>
</body>
</html>
您可以在此处在线试用: goo.gl/faFW6o .
You can try it online here: goo.gl/faFW6o.
推荐答案
这是因为Safari中的后退缓存.
This is because of the back-forward cache in Safari.
您可以使用以下代码在按下后退按钮时强制重新加载.
You can use the following code to force a reload when the back-button is pressed.
window.onpageshow = function(e) { // e -> event
if (e.persisted) {
window.location.reload();
}
};
此外，如果您使用的是jQuery ...
Additionally, if you are using jQuery ...
$(window).bind("pageshow", function(e) { // e -> event
if (e.originalEvent.persisted) {
window.location.reload();
}
});
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