在移动 Safari 中检测 iOS5（首选 JavaScript）
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Detect iOS5 within mobile Safari (javascript preferred)
提问by user969622
The new fixed positioning introduced in iOS5 corrupted my webapp and I need a way to detect iOS5 users.
iOS5 中引入的新固定定位损坏了我的 web 应用程序，我需要一种方法来检测 iOS5 用户。
How can I detect iOS5? What is the browser agent string? JavaScript preferred. Thanks!
如何检测iOS5？什么是浏览器代理字符串？首选 JavaScript。谢谢！
回答by chown
From the SO question: What is the iOS 5 user-agent string:
来自 SO 问题：What is the iOS 5 user-agent string：
iPhone:
iPhone：
Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A334 Safari/7534.48.3
Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A334 Safari/7534.48.3
iPad:
iPad：
Mozilla/5.0 (iPad; CPU OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A334 Safari/7534.48.3
Mozilla/5.0 (iPad; CPU OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A334 Safari/7534.48.3
And here is way to test for ios 5.x in javascript:
这是在 javascript 中测试 ios 5.x 的方法：
<script type="text/javascript">
if (navigator.userAgent.match(/OS 5(_\d)+ like Mac OS X/i))
// this helps detect minor versions such as 5_0_1
document.write("You have iOS 5! Aren't you special!");
</script>
回答by Pete Cook
I've developed chown's answer a bit further, with a check for any iOS5 device, be it 5 or 5.0.1 or any later versions:
我进一步开发了 chown 的答案，检查了任何 iOS5 设备，无论是 5 还是 5.0.1 或任何更高版本：
var ios5 = navigator.userAgent.match(/OS 5_[0-9_]+ like Mac OS X/i) != null;
if(ios5) {
// Now you can do specific stuff for devices on any version of iOS5
}
回答by naderf
You need to account for "CPU OS 5_0" and "CPU iPhone OS 5_0", rough and dirty regex:
您需要考虑“CPU OS 5_0”和“CPU iPhone OS 5_0”，粗糙和肮脏的正则表达式：
<script type="text/javascript">
if (navigator.userAgent.match(/(iPad|iPhone);.*CPU.*OS 5_\d/i))
{
alert("On iOS 5")
}
else
{
alert("Not on iOS 5"); //could be either 4- or 6+
}
</script>
回答by Aaron
You could be using Modernizrand detecting for Web Workersas they were not available prior to iOS 5. You need to still exclude Android as Android 2.0+ has supported them. This will give you forward compatibility with iOS6 which you aren't going to get with either of the user agent parses already provided.
您可以使用Modernizr并检测Web Workers，因为它们在 iOS 5 之前不可用。您仍然需要排除 Android，因为 Android 2.0+ 已经支持它们。这将为您提供与 iOS6 的向前兼容性，而您将无法使用已提供的任何用户代理解析。
