'use strict';
function emulatedIEMajorVersion() {
- var groups = /MSIE ([0-9.]+)/.exec(window.navigator.userAgent);
+ var groups = /MSIE ([0-9.]+)/.exec(window.navigator.userAgent)
if (groups === null) {
- return null;
+ return null
}
- var ieVersionNum = parseInt(groups[1], 10);
- var ieMajorVersion = Math.floor(ieVersionNum);
- return ieMajorVersion;
+ var ieVersionNum = parseInt(groups[1], 10)
+ var ieMajorVersion = Math.floor(ieVersionNum)
+ return ieMajorVersion
}
function actualNonEmulatedIEMajorVersion() {
// Detects the actual version of IE in use, even if it's in an older-IE emulation mode.
// IE JavaScript conditional compilation docs: http://msdn.microsoft.com/en-us/library/ie/121hztk3(v=vs.94).aspx
// @cc_on docs: http://msdn.microsoft.com/en-us/library/ie/8ka90k2e(v=vs.94).aspx
- var jscriptVersion = new Function('/*@cc_on return @_jscript_version; @*/')(); // jshint ignore:line
+ var jscriptVersion = new Function('/*@cc_on return @_jscript_version; @*/')() // jshint ignore:line
if (jscriptVersion === undefined) {
- return 11; // IE11+ not in emulation mode
+ return 11 // IE11+ not in emulation mode
}
if (jscriptVersion < 9) {
- return 8; // IE8 (or lower; haven't tested on IE<8)
+ return 8 // IE8 (or lower; haven't tested on IE<8)
}
- return jscriptVersion; // IE9 or IE10 in any mode, or IE11 in non-IE11 mode
+ return jscriptVersion // IE9 or IE10 in any mode, or IE11 in non-IE11 mode
}
- var ua = window.navigator.userAgent;
+ var ua = window.navigator.userAgent
if (ua.indexOf('Opera') > -1 || ua.indexOf('Presto') > -1) {
- return; // Opera, which might pretend to be IE
+ return // Opera, which might pretend to be IE
}
- var emulated = emulatedIEMajorVersion();
+ var emulated = emulatedIEMajorVersion()
if (emulated === null) {
- return; // Not IE
+ return // Not IE
}
- var nonEmulated = actualNonEmulatedIEMajorVersion();
+ var nonEmulated = actualNonEmulatedIEMajorVersion()
if (emulated !== nonEmulated) {
- window.alert('WARNING: You appear to be using IE' + nonEmulated + ' in IE' + emulated + ' emulation mode.\nIE emulation modes can behave significantly differently from ACTUAL older versions of IE.\nPLEASE DON\'T FILE BOOTSTRAP BUGS based on testing in IE emulation modes!');
+ window.alert('WARNING: You appear to be using IE' + nonEmulated + ' in IE' + emulated + ' emulation mode.\nIE emulation modes can behave significantly differently from ACTUAL older versions of IE.\nPLEASE DON\'T FILE BOOTSTRAP BUGS based on testing in IE emulation modes!')
}
})();