isIOS9

function isIOS9() {
//获取固件版本
var getOsv = function () {
var reg = /OS ((\d+_?){2,3})\s/;
if (navigator.userAgent.match(/iPad/i) || navigator.platform.match(/iPad/i) || navigator.userAgent.match(/iP(hone|od)/i) || navigator.platform.match(/iP(hone|od)/i)) {
var osv = reg.exec(navigator.userAgent);
if (osv.length > 0) {
return osv[0].replace('OS', '').replace('os', '').replace(/\s+/g, '').replace(/_/g, '.');
}
}
return '';
};
var osv = getOsv();
var osvArr = osv.split('.');
//初始化显示ios9引导
if (osvArr && osvArr.length > 0) {
if (parseInt(osvArr[0]) >= 9) {
return true
}
}

return false
}