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* Classicifation (JS) Use addClass instead of attr( 'class' ) whenever possible. addClass will manipulate the properties directly instead of (re-)setting an attribute which (most) browsers then sync with the properties. Difference between: elem.className and elem.setAttribute( 'class', .. ); Just like .checked, .value, .disabled and other interactive properties, the HTML attributes should only be used for initial values from the html document. When in javascript, only set properties. Attributes are either ignored or slow. * Styling (JS) Use .css() instead of attr( 'style' ). Again, setting properties instead of attributes is much faster, easier and safer. And this way it takes care of cross-browser issues where applicable, and less prone to error due to dealing with key-value pairs instead of css strings. Difference between: elem.style.foo = 'bar'; and elem.setAttribute( 'style', 'foo: bar;' ); * Finding (JS) Use .find( 'foo bar' ) instead of .find( 'foo' ).find( 'bar' ). It is CSS! * Vendor prefixes (CSS) It is important to always list newer (standards-compliant) versions *after* the older/prefixed variants. See also http://css-tricks.com/ordering-css3-properties/ So the following three: -webkit-gradient (Chrome, Safari 4) -webkit-linear-gradient (Chrome 10, Safari 5+) linear-gradient (CSS3 standard) ... must be in that order. Notes: - "-moz-opacity" is from before Mozilla 1.7 (Firefox < 0.8) Has not been renamed to "opacity" since Firefox 0.9. - Removed redundant "-moz-opacity" - Added "filter: alpha(opacity=**);" where missing - Fixed order of css3 properties (old to new) - Add standardized css3 versions where missing (some 'border-radius' groups didn't have the non-prefixed version) - Spacing - @embed - Shorten hex colors where possible (#dddddd -> #ddd) $ ack '#([0-9a-f])\1{5}' --css $ ack '#([0-9a-f])\1{2};' --css Change-Id: I386fedb9058c2567fd0af5f55291e9859a53329d |
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