The IE cheatsheet

Only in IE7+

Selectors:

• > (descendant)
• [attr] (attribute)
• .class1.class2 (multiple classes)
• ~ (sibling)

CSS properties:

• max-width
• position: fixed

Only in IE8+

Selectors/pseudos:

• + (adjacent)
• :first-child (unless for static elements)
• :focus
• :before, :after (single colon only)

CSS properties:

• outline
• display: inline-block (unless on <span>)
• display: table
• whitespace: pre-wrap
• whitespace: pre-line
• border-collapse, border-spacing, table-layout, ...
• box-sizing

Features:

• PNG alpha transparency
• data: URI

JS features:

• JSON parsing
• Cross-origin resource sharing

Only in IE9+

Selectors/pseudos:

• :first-of-type, :last-of-type
• :last-child
• :empty
• :enabled, :disabled, :checked
• :not()
• :nth-child(), :nth-last-child(),
• :nth-of-type(), :nth-last-of-type(), :only-of-type()
• :only-child()
• :target
• ::selection

CSS properties:

• background-clip
• background-origin
• background-size
• background: x, y, z (multiple backgrounds)
• opacity
• border-radius
• box-shadow
• rgba()
• -ms-transform

CSS features:

• @media queries

HTML5 features:

• <canvas>
• <svg>
• <img src='image.svg'>

Only in IE10+

CSS features:

• -ms-animation
• transition
• linear-gradient()

Features:

• <input placeholder='..'>
• <input type='range'>

HTML5 features:

• Web sockets

Not in IE10 (or below) at all

CSS properties:

• text-shadow (polyfill)

Polyfills

Always install these in every project:

• selectivizr for selectors
• html5shiv for new HTML tags
• json2 for JSON parsing (IE7-)

You may also need these:

• [modernizr] for feature detection
• css3pie for CSS3 decorations

Also see:

• Cross-browser polyfills list

Misc

• "Static" = doesn't work for elements inserted via JS