diff options
Diffstat (limited to 'vendor/twbs/bootstrap/site/assets/js/ie-emulation-modes-warning.js')
-rw-r--r-- | vendor/twbs/bootstrap/site/assets/js/ie-emulation-modes-warning.js | 52 |
1 files changed, 0 insertions, 52 deletions
diff --git a/vendor/twbs/bootstrap/site/assets/js/ie-emulation-modes-warning.js b/vendor/twbs/bootstrap/site/assets/js/ie-emulation-modes-warning.js deleted file mode 100644 index d11ec1c5a..000000000 --- a/vendor/twbs/bootstrap/site/assets/js/ie-emulation-modes-warning.js +++ /dev/null @@ -1,52 +0,0 @@ -// NOTICE!! DO NOT USE ANY OF THIS JAVASCRIPT -// IT'S ALL JUST JUNK FOR OUR DOCS! -// ++++++++++++++++++++++++++++++++++++++++++ - -// Intended to prevent false-positive bug reports about Bootstrap not working properly in old versions of IE due to folks testing using IE's unreliable emulation modes. -(function () { - 'use strict' - - function emulatedIEMajorVersion() { - var groups = /MSIE ([\d.]+)/.exec(window.navigator.userAgent) - if (groups === null) { - return null - } - - 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: https://msdn.microsoft.com/library/121hztk3%28v=vs.94%29.aspx - // @cc_on docs: https://msdn.microsoft.com/library/8ka90k2e%28v=vs.94%29.aspx - var jscriptVersion = new Function('/*@cc_on return @_jscript_version; @*/')() // eslint-disable-line no-new-func - if (typeof jscriptVersion === 'undefined') { - return 11 // IE11+ not in emulation mode - } - - if (jscriptVersion < 9) { - 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 - } - - var ua = window.navigator.userAgent - if (ua.indexOf('Opera') > -1 || ua.indexOf('Presto') > -1) { - return // Opera, which might pretend to be IE - } - - var emulated = emulatedIEMajorVersion() - if (emulated === null) { - return // Not IE - } - - var nonEmulated = actualNonEmulatedIEMajorVersion() - - if (emulated !== nonEmulated) { - // eslint-disable-next-line no-alert - 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!') - } -})() |