我真的找不到我要找的东西,所以我从这个页面和网络上的其他页面中汲取了一些想法,然后想出了这个。希望其他人也会发现它很有用。
function iOS_version() {
if(navigator.userAgent.match(/ipad|iphone|ipod/i)){ //if the current device is an iDevice
var ios_info ={};
ios_info.User_Agent=navigator.userAgent;
ios_info.As_Reported=(navigator.userAgent).match(/OS (\d)?\d_\d(_\d)?/i)[0];
ios_info.Major_Release=(navigator.userAgent).match(/OS (\d)?\d_\d(_\d)?/i)[0].split('_')[0];
ios_info.Full_Release=(navigator.userAgent).match(/OS (\d)?\d_\d(_\d)?/i)[0].replace(/_/g,".");
ios_info.Major_Release_Numeric=+(navigator.userAgent).match(/OS (\d)?\d_\d(_\d)?/i)[0].split('_')[0].replace("OS ","");
ios_info.Full_Release_Numeric=+(navigator.userAgent).match(/OS (\d)?\d_\d(_\d)?/i)[0].replace("_",".").replace("_","").replace("OS ",""); //converts versions like 4.3.3 to numeric value 4.33 for ease of numeric comparisons
return(ios_info);
}
}
它允许您以字符串或 iOS 数字的形式获取主要版本和完整版本号。
示例用户代理字符串:
Mozilla/5.0(iPhone;CPU iPhone OS 6_1_3,如 Mac OS X)AppleWebKit/536.26(KHTML,如 Gecko)Mobile/10B329
用法:
var iOS=iOS_version();
console.log(iOS.Full_Release); //returns values in form of "OS 6.1.3"
console.log(iOS.Full_Release_Numeric); //returns values in form of 6.13
//useful for comparisons like if(iOS.Full_Release_Numeric >6.2)
console.log(iOS.Major_Release); //returns values in form of "OS 6"
console.log(iOS.Major_Release_Numeric); //returns values in form of 6
//useful for comparisons like if(iOS.Major_Release_Numeric >7)
console.log(iOS.As_Reported); //returns values in form of "OS 6_1_3"
console.log(iOS.User_Agent); //returns the full user agent string
对于此页面上的原始问题,您可以按以下方式使用此代码:
var iOS=iOS_version();
$(document).bind("scroll", function() {
if(iOS){if(iOS.Major_Release_Numeric <5) {}
else {changeFooterPosition();}
}
});