下面是一个回答这个问题的JSFIDLE:
var standalone = window.navigator.standalone,
userAgent = window.navigator.userAgent.toLowerCase(),
safari = /safari/.test( userAgent ),
ios = /iphone|ipod|ipad/.test( userAgent );
if( ios ) {
if ( !standalone && safari ) {
document.getElementById( 'where-am-i' ).textContent = 'browser';
} else if ( standalone && !safari ) {
document.getElementById( 'where-am-i' ).textContent = 'standalone';
} else if ( !standalone && !safari ) {
document.getElementById( 'where-am-i' ).textContent = 'uiwebview';
};
} else {
document.getElementById( 'where-am-i' ).textContent = 'not iOS';
};
https://jsfiddle.net/ThinkingStiff/6qrbn/