function isIPhoneX(fn){
var u = navigator.userAgent;
var isIOS = !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/); //ios终端
if (isIOS) {
if (screen.height == 812 && screen.width == 375){
//是iphoneX
}else{
//不是iphoneX
}
}
}
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引用：https://blog.csdn.net/weixin_39924326/article/details/80352929
