welsonjs/node_modules/modernizr/feature-detects/history.js

53 lines
1.7 KiB
JavaScript

/*!
{
"name": "History API",
"property": "history",
"caniuse": "history",
"tags": ["history"],
"authors": ["Hay Kranen", "Alexander Farkas"],
"notes": [{
"name": "W3C Spec",
"href": "https://www.w3.org/TR/html51/browsers.html#the-history-interface"
}, {
"name": "MDN Docs",
"href": "https://developer.mozilla.org/en-US/docs/Web/API/window.history"
}],
"polyfills": ["historyjs", "html5historyapi"]
}
!*/
/* DOC
Detects support for the History API for manipulating the browser session history.
*/
define(['Modernizr'], function(Modernizr) {
Modernizr.addTest('history', function() {
// Issue #733
// The stock browser on Android 2.2 & 2.3, and 4.0.x returns positive on history support
// Unfortunately support is really buggy and there is no clean way to detect
// these bugs, so we fall back to a user agent sniff :(
var ua = navigator.userAgent;
// Some browsers allow to have empty userAgent.
// Therefore, we need to check ua before using "indexOf" on it.
if(!ua) {
return false;
}
// We only want Android 2 and 4.0, stock browser, and not Chrome which identifies
// itself as 'Mobile Safari' as well, nor Windows Phone (issue #1471).
if ((ua.indexOf('Android 2.') !== -1 ||
(ua.indexOf('Android 4.0') !== -1)) &&
ua.indexOf('Mobile Safari') !== -1 &&
ua.indexOf('Chrome') === -1 &&
ua.indexOf('Windows Phone') === -1 &&
// Since all documents on file:// share an origin, the History apis are
// blocked there as well
location.protocol !== 'file:'
) {
return false;
}
// Return the regular check
return (window.history && 'pushState' in window.history);
});
});