JQuery 2.0 will not support IE 6/7/8
JQuery developers have published a plan for the release of new versions of the library.
The goal is that 1.9 and 2.0 should be interchangeable within the supported API sets. When jQuery 2.0 comes out, developers will have a choice of which version to use: do they need IE 6/7/8 support? The jQuery 2.0 version will be smaller and with better performance.
Alternatively, you can go directly to jQuery 2.0, but enable jQuery 1.9 download for visitors with old IE.
There will be no oldIE plug-in for jQuery 2.0, this makes the library code too complicated.
- jQuery 1.8 : will be released within a month.
- jQuery 1.9 (beginning of 2013) : removes many interfaces that are obsolete in version 1.8; some of them will remain as plugins or alternative APIs. Support for IE 6/7/8 is preserved.
- jQuery 1.9.x (during 2013 and beyond) : version with adding patches, fixing bugs, support for new browsers, etc.
- jQuery 2.0 (beginning of 2013, shortly after 1.9) : supports the same APIs as in jQuery 1.9, but deletes the weirdness of IE 6/7/8, such as the event model, “attroperties” in IE7, HTML5shim, etc. .
The goal is that 1.9 and 2.0 should be interchangeable within the supported API sets. When jQuery 2.0 comes out, developers will have a choice of which version to use: do they need IE 6/7/8 support? The jQuery 2.0 version will be smaller and with better performance.
Alternatively, you can go directly to jQuery 2.0, but enable jQuery 1.9 download for visitors with old IE.
<!--[if lt IE 9]> <script src="jquery-1.9.0.js"></script> <![endif]--> <!--[if gte IE 9]><!--> <script src="jquery-2.0.0.js"><</script> <!--<![endif]--> There will be no oldIE plug-in for jQuery 2.0, this makes the library code too complicated.
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Source: https://habr.com/ru/post/146758/
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