各种奇妙的hack

Android

Selector Hacks

WebKit

.selector:not(*:root) {}

Chrome *
Safari *
Opera ≥ 14
Android *

JavaScript Hacks

var isChromium = !!window.chrome;

Chrome *
Opera ≥ 14
Android 4.0.4

Media Query Hacks

@media screen and (min-width:0\0) {}

Internet Explorer ≥ 9
Safari 4
Android ≥ 2.3

Chrome

Selector Hacks

WebKit

.selector:not(*:root) {}

Chrome *
Safari *
Opera ≥ 14
Android *

Supports Hacks

@supports (-webkit-appearance:none) {}

Chrome ≥ 28
Opera ≥ 14

Property/Value Hacks

.selector { (;property: value;); }.selector { [;property: value;]; }

Chrome ≤ 28
Safari ≤ 7
Opera ≥ 14

JavaScript Hacks

var isChromium = !!window.chrome;

Chrome *
Opera ≥ 14
Android 4.0.4

Webkit

var isWebkit = ‘WebkitAppearance‘ in document.documentElement.style;

Chrome *
Safari ≥ 3
Opera ≥ 14

var isChrome = !!window.chrome && !!window.chrome.webstore;

Chrome ≥ 14

Media Query Hacks

@media \\0 screen {}

Chrome 22-28
Safari ≥ 7

@media all and (-webkit-min-device-pixel-ratio:0) and (min-resolution: .001dpcm) { .selector {} }

Chrome ≥ 29
Opera ≥ 16

Firefox

Selector Hacks

body:empty .selector {}

firefox 1.5/2

body:last-child .selector, x:-moz-any-link {}

firefox ≥ 2

body:last-child .selector, x:-moz-any-link, x:default {}

firefox ≥ 3

body:not(:-moz-handler-blocked) .selector {}

firefox ≥ 3.5

_::-moz-progress-bar, body:last-child .selector {}

firefox ≥ 6

_::-moz-range-track, body:last-child .selector {}

firefox ≥ 21

_:-moz-tree-row(hover), .selector {}

firefox *

Everything but Firefox and Internet Explorer ≤8

_::selection, .selector:not([attr*=‘‘]) {}

Internet Explorer ≤ 8
firefox *

Supports Hacks

@supports (-moz-appearance:meterbar) {}

firefox ≥ 16

@supports (-moz-appearance:meterbar) and (display:flex) {}

firefox ≥ 22

@supports (-moz-appearance:meterbar) and (cursor:zoom-in) {}

firefox ≥ 24

@supports (-moz-appearance:meterbar) and (background-attachment:local) {}

firefox ≥ 25

@supports (-moz-appearance:meterbar) and (image-orientation:90deg) {}

firefox ≥ 26

@supports (-moz-appearance:meterbar) and (all:initial) {}

firefox ≥ 27

@supports (-moz-appearance:meterbar) and (list-style-type:japanese-formal) {}

firefox ≥ 28

@supports (-moz-appearance:meterbar) and (background-blend-mode:difference,normal) {}

firefox ≥ 30

JavaScript Hacks

var isFF = !!window.sidebar;

firefox *

var isFF = ‘MozAppearance‘ in document.documentElement.style;

firefox *

var isFF = !!navigator.userAgent.match(/firefox/i);

firefox *

var isFF = typeof InstallTrigger !== ‘undefined‘;

firefox ≥ 1.5

var isFF = !!window.globalStorage;

firefox 2-13

var isFF = /a/[-1]==‘a‘;

firefox 2-3

var isFF = (function x(){})[-6]==‘x‘;

firefox 2

var isFF = (function x(){})[-5]==‘x‘;

firefox 3

Media Query Hacks

@media \0 all {}

firefox ≤ 3

@media screen and (-moz-images-in-menus:0) {}

firefox ≥ 3.6

@media screen and (min--moz-device-pixel-ratio:0) {}

firefox ≥ 4

@media all and (min--moz-device-pixel-ratio:0) and (min-resolution: .001dpcm) {}@media all and (-moz-images-in-menus:0) and (min-resolution: .001dpcm) {}

firefox ≥ 8

@media all and (min--moz-device-pixel-ratio:0) { @media (min-width: 0px) {} }@media all and (-moz-images-in-menus:0) { @media (min-width: 0px) {} }

firefox ≥ 11

@media all and (min--moz-device-pixel-ratio:0) and (min-resolution: 3e1dpcm) {}

firefox ≥ 29

Miscellaneous

@-moz-document url-prefix() {}

firefox ≥ 3

Internet Explorer

Selector Hacks

.unused-class can be any unused class

* html .selector {}.unused-class.selector {}

Internet Explorer ≤ 6

Everything but Internet Explorer 6

html > body .selector {}

Internet Explorer 6

.selector, {}

Internet Explorer ≤ 7

*:first-child+html .selector {}.selector, x:-IE7 {}*+html .selector {}body*.selector {}

Internet Explorer 7

.selector\ {}

Internet Explorer ≤ 7

Everything but Internet Explorer ≤7

html > /**/ body .selector {}head ~ /**/ body .selector {}

Internet Explorer ≤ 7

Everything but Firefox and Internet Explorer ≤8

_::selection, .selector:not([attr*=‘‘]) {}

Internet Explorer ≤ 8
firefox *

Everything but Internet Explorer ≤8

:root .selector {}body:last-child .selector {}body:nth-of-type(1) .selector {}body:first-of-type .selector {}.selector:not([attr*=‘‘]) {}

Internet Explorer ≤ 8

Everything but Internet Explorer ≤9

html[lang=‘\en‘] .selector {}

Internet Explorer ≤ 9

_:-ms-input-placeholder, :root .selector {}

Internet Explorer ≥ 10

_:-ms-fullscreen, :root .selector {}

Internet Explorer ≥ 11

Property/Value Hacks

.selector { _property: value; }.selector { -property: value; }

Internet Explorer 6

.selector { property: value\9; }.selector { property/*\**/: value\9; }

Internet Explorer 6-8

Any combination of these characters: ! $ & * ( ) = % + @ , . / ` [ ] # ~ ? : < > |

.selector { !property: value; }.selector { $property: value; }.selector { &property: value; }.selector { *property: value; }.selector { )property: value; }.selector { =property: value; }.selector { %property: value; }.selector { +property: value; }.selector { @property: value; }.selector { ,property: value; }.selector { .property: value; }.selector { /property: value; }.selector { `property: value; }.selector { ]property: value; }.selector { #property: value; }.selector { ~property: value; }.selector { ?property: value; }.selector { :property: value; }.selector { |property: value; }

Internet Explorer ≤ 7

Acts as an !important; string after ! can be anything

.selector { property: value !ie; }

Internet Explorer ≤ 7

JavaScript Hacks

Check for Internet Explorer version

var ieVersion = /*@cc_on (function() {switch(@_jscript_version) {case 1.0: return 3; case 3.0: return 4; case 5.0: return 5; case 5.1: return 5; case 5.5: return 5.5; case 5.6: return 6; case 5.7: return 7; case 5.8: return 8; case 9: return 9; case 10: return 10;}})() || @*/ 0;

Internet Explorer 3-10

var isIE = document.all && !window.XMLHttpRequest;

Internet Explorer ≤ 6

var isIE = document.all && document.compatMode;

Internet Explorer 6-10

var isIE = !!window.ActiveXObject;

Internet Explorer 6-10

var isIE = document.all && !document.querySelector;

Internet Explorer ≤ 7

var isIE = document.all && window.XMLHttpRequest && !document.querySelector;

Internet Explorer 7

var isIE = document.all && window.XMLHttpRequest;

Internet Explorer 7-10

var isIE = navigator.appVersion.indexOf("MSIE 7.") !== -1;

Internet Explorer 7

var isIE = document.all && document.querySelector;

Internet Explorer 8-10

var isIE = document.all && !document.addEventListener;

Internet Explorer ≤ 8

var isIE = document.all && document.querySelector && !document.addEventListener;

Internet Explorer 8

var isIE = ‘\v‘==‘v‘;

Internet Explorer ≤ 8

var isIE = !+‘\v1‘;

Internet Explorer ≤ 8

var isIE = document.all && !window.atob;

Internet Explorer ≤ 9

var isIE = document.all && document.addEventListener && !window.atob;

Internet Explorer 9

var isIE = document.all && document.addEventListener;

Internet Explorer 9-10

var isIE = document.all && window.atob;

Internet Explorer 10

var isIE = /*@cc_on!@*/false;

Internet Explorer ≤ 10

Check for Internet Explorer version

var ieVersion = (function() { if (new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})").exec(navigator.userAgent) != null) { return parseFloat( RegExp.$1 ); } else { return false; } })();

Internet Explorer ≤ 10

var isIE = eval("/*@cc_on!@*/false") && document.documentMode === 10;

Internet Explorer 10

var isIE = document.body.style.msTouchAction !== undefined;

Internet Explorer ≥ 10

var isIE = window.navigator.msPointerEnabled;

Internet Explorer ≥ 10

var isIE = ‘behavior‘ in document.documentElement.style && ‘-ms-user-select‘ in document.documentElement.style;

Internet Explorer 10

var isIE = ‘-ms-scroll-limit‘ in document.documentElement.style && ‘-ms-ime-align‘ in document.documentElement.style;

Internet Explorer 11

Media Query Hacks

@media screen\9 {}

Internet Explorer ≤ 7

@media \0screen\,screen\9 {}

Internet Explorer ≤ 8

@media \0screen {}

Internet Explorer 8

@media screen and (min-width:0\0) {}

Internet Explorer ≥ 9
Safari 4
Android ≥ 2.3

@media screen and (-ms-high-contrast: active), (-ms-high-contrast: none) {}

Internet Explorer ≥ 10

Everything but Internet Explorer and Safari ≤6

@media screen { @media (min-width: 0px) {} }

Internet Explorer *
Safari ≤ 6

Conditional comments

<!--[if IE 6]> Internet Explorer 6 <![endif]--><!--[if IE 7]> Internet Explorer 7 <![endif]--><!--[if IE 8]> Internet Explorer 8 <![endif]--><!--[if IE 9]> Internet Explorer 9 <![endif]-->

Internet Explorer 6-9

<!--[if lte IE 6]> Internet Explorer 6 or less <![endif]--><!--[if lte IE 7]> Internet Explorer 7 or less <![endif]--><!--[if lte IE 8]> Internet Explorer 8 or less <![endif]--><!--[if lte IE 9]> Internet Explorer 9 or less <![endif]-->

Internet Explorer 6-9

<!--[if gte IE 6]> Internet Explorer 6 or greater <![endif]--><!--[if gte IE 7]> Internet Explorer 7 or greater <![endif]--><!--[if gte IE 8]> Internet Explorer 8 or greater <![endif]--><!--[if gte IE 9]> Internet Explorer 9 or greater <![endif]-->

Internet Explorer 6-9

<!--[if IE]> Internet Explorer 9- <![endif]-->

Internet Explorer ≤ 9

Everything but Internet Explorer ≤9

<!--[if !IE]><!--> Everything but Internet Explorer ≤9 <!--<![endif]-->

Internet Explorer ≤ 9

Opera

Selector Hacks

*|html[xmlns*=""] .selector {}

Safari 2/3.1
Opera 9.25

html:first-child .selector {}

Opera ≤ 9.27
Safari 2

_:-o-prefocus, body:last-child .selector {}

Opera ≥ 9.5

@media all and (-webkit-min-device-pixel-ratio:10000), not all and (-webkit-min-device-pixel-ratio:0) {}

Opera ≤ 11

WebKit

.selector:not(*:root) {}

Chrome *
Safari *
Opera ≥ 14
Android *

Supports Hacks

@supports (-webkit-appearance:none) {}

Chrome ≥ 28
Opera ≥ 14

Property/Value Hacks

.selector { (;property: value;); }.selector { [;property: value;]; }

Chrome ≤ 28
Safari ≤ 7
Opera ≥ 14

JavaScript Hacks

var isOpera = /^function \(/.test([].sort);

Opera ≤ 9.64

Replace X by the version

var isOpera = window.opera && window.opera.version() == X;

Opera ≤ 12

var isOpera = !!window.opera;

Opera ≤ 12.16

var isChromium = !!window.chrome;

Chrome *
Opera ≥ 14
Android 4.0.4

Webkit

var isWebkit = ‘WebkitAppearance‘ in document.documentElement.style;

Chrome *
Safari ≥ 3
Opera ≥ 14

var isOpera = !!window.opera || /opera|opr/i.test(navigator.userAgent);

Opera *

Media Query Hacks

@media (min-resolution: .001dpcm) { _:-o-prefocus, .selector {} }

Opera ≥ 12

@media all and (-webkit-min-device-pixel-ratio:0) and (min-resolution: .001dpcm) { .selector {} }

Chrome ≥ 29
Opera ≥ 16

Opera Mini

JavaScript Hacks

var isOperaMini = Object.prototype.toString.call(window.operamini) === ‘[object OperaMini]‘;

Opera Mini *

var isOperaMini = (navigator.userAgent.indexOf(‘Opera Mini‘) > -1);

Opera Mini *

Safari

Selector Hacks

WebKit

.selector:not(*:root) {}

Chrome *
Safari *
Opera ≥ 14
Android *

html:first-child .selector {}

Opera ≤ 9.27
Safari 2

html[xmlns*=""] body:last-child .selector {}html[xmlns*=""]:root .selector {}

Safari 2-3

*|html[xmlns*=""] .selector {}

Safari 2/3.1
Opera 9.25

_::-moz-svg-foreign-content, :root .selector {}

Safari 5.1-6

Property/Value Hacks

.selector { (;property: value;); }.selector { [;property: value;]; }

Chrome ≤ 28
Safari ≤ 7
Opera ≥ 14

JavaScript Hacks

Webkit

var isWebkit = ‘WebkitAppearance‘ in document.documentElement.style;

Chrome *
Safari ≥ 3
Opera ≥ 14

var isSafari = /a/.__proto__==‘//‘;

Safari ≤ 5

var isSafari = /constructor/i.test(window.HTMLElement);

Safari *

var isSafari = !!navigator.userAgent.match(/safari/i) && !navigator.userAgent.match(/chrome/i) && typeof document.body.style.webkitFilter !== "undefined" && !window.chrome;

Safari 6

Media Query Hacks

@media screen and (min-width:0\0) {}

Internet Explorer ≥ 9
Safari 4
Android ≥ 2.3

Everything but Internet Explorer and Safari ≤6

@media screen { @media (min-width: 0px) {} }

Internet Explorer *
Safari ≤ 6

@media \\0 screen {}

Chrome 22-28
Safari ≥ 7