:left
Read More at MDN DocsView SpecSafe to Use
:left is considered safe to use.
It’s supported by 92% of global browsers.
Browsers
ChromeSep 2, 2010v6.0.0
26%╱100%
100% of Chrome users are running a supported version.
SafariJun 7, 2010v5.0.05%╱100%
100% of Safari users are running a supported version.
EdgeJul 28, 2015v12.0.05%╱100%
100% of Edge users are running a supported version.
FirefoxUnsupportedFirefox does not support this feature.
Version Breakdown
Support
Adoption
Chrome
Sep 2, 2010 v6.0.0
26%╱100%
100% of Chrome users are running a supported version.
Sep 2, 2010 – Latest
v6.0.0+
26%╱100%
Full Support
Chrome Android
Jun 27, 2012 v18.0.0
36%╱100%
100% of Chrome Android users are running a supported version.
Jun 27, 2012 – Latest
v18.0.0+
36%╱100%
Full Support
Edge
Jul 28, 2015 v12.0.0
5%╱100%
100% of Edge users are running a supported version.
Jul 28, 2015 – Latest
v12.0.0+
5%╱100%
Full Support
Firefox
Unsupported
Firefox does not support this feature.
No Support
Firefox for Android
Unsupported
Firefox for Android does not support this feature.
No Support
Internet Explorer
Mar 19, 2009 v8.0.0
0%╱100%
100% of Internet Explorer users are running a supported version.
Mar 19, 2009 – Latest
v8.0.0+
0%╱100%
Full Support
Unknown v5.0.0
Quest Browser supports this feature.
Unknown
v5.0.0+
Full Support
Opera
Apr 11, 2007 v9.2.0
1%╱100%
100% of Opera users are running a supported version.
Apr 11, 2007 – Latest
v9.2.0+
1%╱100%
Full Support
Opera Android
Nov 9, 2010 v10.1.0
Opera Android supports this feature.
Nov 9, 2010 – Latest
v10.1.0+
Full Support
Safari
Jun 7, 2010 v5.0.0
5%╱100%
100% of Safari users are running a supported version.
Jun 7, 2010 – Latest
v5.0.0+
5%╱100%
Full Support
Safari on iOS
Nov 22, 2010 v4.2.0
17%╱100%
100% of Safari on iOS users are running a supported version.
Nov 22, 2010 – Latest
v4.2.0+
17%╱100%
Full Support
Samsung Internet
Apr 27, 2013 v1.0.0
2%╱100%
100% of Samsung Internet users are running a supported version.
Apr 27, 2013 – Latest
v1.0.0+
2%╱100%
Full Support
WebView Android
Sep 3, 2014 v37.0.0
WebView Android supports this feature.
Sep 3, 2014 – Latest
v37.0.0+
Full Support