Check Browser Support

checkbrowsersupport.js

var checkSupport = function checkSupport(el) {
    if (!(el in document.documentElement.style)) {
        document.body.className+= ' NoSupport-' + el;
    };
};

var test = checkSupport('backgroundSize');

/* 
  OPTIONS
  ---
  
   alignContent 
 alignItems 
 alignSelf 
 alignmentBaseline 
 all 
 animation 
 animationDelay 
 animationDirection 
 animationDuration 
 animationFillMode 
 animationIterationCount 
 animationName 
 animationPlayState 
 animationTimingFunction 
 backfaceVisibility 
 background    
 backgroundAttachment 
 backgroundBlendMode 
 backgroundClip 
 backgroundColor 
 backgroundImage 
 backgroundOrigin 
 backgroundPosition 
 backgroundPositionX 
 backgroundPositionY 
 backgroundRepeat 
 backgroundRepeatX 
 backgroundRepeatY 
 backgroundSize    
 baselineShift    
 border    
 borderBottom    
 borderBottomColor    
 borderBottomLeftRadius    
 borderBottomRightRadius    
 borderBottomStyle    
 borderBottomWidth    
 borderCollapse    
 borderColor    
 borderImage    
 borderImageOutset    
 borderImageRepeat    
 borderImageSlice    
 borderImageSource    
 borderImageWidth    
 borderLeft    
 borderLeftColor    
 borderLeftStyle    
 borderLeftWidth    
 borderRadius    
 borderRight    
 borderRightColor    
 borderRightStyle    
 borderRightWidth    
 borderSpacing    
 borderStyle    
 borderTop    
 borderTopColor    
 borderTopLeftRadius    
 borderTopRightRadius    
 borderTopStyle    
 borderTopWidth    
 borderWidth    
 bottom    
 boxShadow    
 boxSizing    
 bufferedRendering    
 captionSide    
 clear    
 clip    
 clipPath    
 clipRule    
 color    
 colorInterpolation    
 colorInterpolationFilters    
 colorRendering    
 content    
 counterIncrement    
 counterReset    
 cursor    
 cx    
 cy    
 direction    
 display    
 dominantBaseline    
 emptyCells    
 enableBackground    
 fill    
 fillOpacity    
 fillRule    
 filter    
 flex    
 flexBasis    
 flexDirection    
 flexFlow    
 flexGrow    
 flexShrink    
 flexWrap    
 float    
 floodColor    
 floodOpacity    
 font    
 fontFamily    
 fontKerning    
 fontSize    
 fontStretch    
 fontStyle    
 fontVariant    
 fontVariantLigatures    
 fontWeight    
 glyphOrientationHorizontal    
 glyphOrientationVertical    
 height    
 imageRendering    
 isolation    
 justifyContent    
 left    
 letterSpacing    
 lightingColor    
 lineHeight    
 listStyle    
 listStyleImage    
 listStylePosition    
 listStyleType    
 margin    
 marginBottom    
 marginLeft    
 marginRight    
 marginTop    
 marker    
 markerEnd    
 markerMid    
 markerStart    
 mask    
 maskType    
 maxHeight    
 maxWidth    
 maxZoom    
 minHeight    
 minWidth    
 minZoom    
 mixBlendMode    
 objectFit    
 objectPosition    
 opacity    
 order    
 orientation    
 orphans    
 outline    
 outlineColor    
 outlineOffset    
 outlineStyle    
 outlineWidth    
 overflow    
 overflowWrap    
 overflowX    
 overflowY    
 padding    
 paddingBottom    
 paddingLeft    
 paddingRight    
 paddingTop    
 page    
 pageBreakAfter    
 pageBreakBefore    
 pageBreakInside    
 paintOrder    
 perspective    
 perspectiveOrigin    
 pointerEvents    
 position    
 quotes    
 r    
 resize    
 right    
 rx    
 ry    
 shapeImageThreshold    
 shapeMargin    
 shapeOutside    
 shapeRendering    
 size    
 speak    
 src    
 stopColor    
 stopOpacity    
 stroke    
 strokeDasharray    
 strokeDashoffset    
 strokeLinecap    
 strokeLinejoin    
 strokeMiterlimit    
 strokeOpacity    
 strokeWidth    
 tabSize    
 tableLayout    
 textAlign    
 textAnchor    
 textDecoration    
 textIndent    
 textOverflow    
 textRendering    
 textShadow    
 textTransform    
 top    
 touchAction    
 transform    
 transformOrigin    
 transformStyle    
 transition    
 transitionDelay    
 transitionDuration    
 transitionProperty    
 transitionTimingFunction    
 unicodeBidi    
 unicodeRange    
 userZoom    
 vectorEffect    
 verticalAlign    
 visibility    
 webkitAppRegion    
 webkitAppearance    
 webkitBackgroundClip    
 webkitBackgroundComposite
 webkitBackgroundOrigin
 webkitBorderAfter
 webkitBorderAfterColor
 webkitBorderAfterStyle
 webkitBorderAfterWidth
 webkitBorderBefore
 webkitBorderBeforeColor
 webkitBorderBeforeStyle
 webkitBorderBeforeWidth
 webkitBorderEnd
 webkitBorderEndColor
 webkitBorderEndStyle
 webkitBorderEndWidth
 webkitBorderHorizontalSpacing
 webkitBorderImage
 webkitBorderStart
 webkitBorderStartColor
 webkitBorderStartStyle
 webkitBorderStartWidth
 webkitBorderVerticalSpacing
 webkitBoxAlign
 webkitBoxDecorationBreak
 webkitBoxDirection
 webkitBoxFlex
 webkitBoxFlexGroup
 webkitBoxLines
 webkitBoxOrdinalGroup
 webkitBoxOrient
 webkitBoxPack
 webkitBoxReflect
 webkitClipPath
 webkitColumnBreakAfter
 webkitColumnBreakBefore
 webkitColumnBreakInside
 webkitColumnCount
 webkitColumnGap
 webkitColumnRule
 webkitColumnRuleColor
 webkitColumnRuleStyle
 webkitColumnRuleWidth
 webkitColumnSpan
 webkitColumnWidth
 webkitColumns
 webkitFilter
 webkitFontFeatureSettings
 webkitFontSizeDelta
 webkitFontSmoothing
 webkitHighlight
 webkitHyphenateCharacter
 webkitLineBoxContain    
 webkitLineBreak
 webkitLineClamp
 webkitLocale
 webkitLogicalHeight
 webkitLogicalWidth
 webkitMarginAfter
 webkitMarginAfterCollapse
 webkitMarginBefore
 webkitMarginBeforeCollapse
 webkitMarginBottomCollapse
 webkitMarginCollapse
 webkitMarginEnd
 webkitMarginStart
 webkitMarginTopCollapse
 webkitMask
 webkitMaskBoxImage
 webkitMaskBoxImageOutset
 webkitMaskBoxImageRepeat
 webkitMaskBoxImageSlice
 webkitMaskBoxImageSource
 webkitMaskBoxImageWidth
 webkitMaskClip
 webkitMaskComposite
 webkitMaskImage
 webkitMaskOrigin
 webkitMaskPosition
 webkitMaskPositionX
 webkitMaskPositionY
 webkitMaskRepeat
 webkitMaskRepeatX
 webkitMaskRepeatY
 webkitMaskSize
 webkitMaxLogicalHeight
 webkitMaxLogicalWidth
 webkitMinLogicalHeight
 webkitMinLogicalWidth
 webkitPaddingAfter
 webkitPaddingBefore
 webkitPaddingEnd
 webkitPaddingStart
 webkitPerspectiveOriginX
 webkitPerspectiveOriginY
 webkitPrintColorAdjust
 webkitRtlOrdering
 webkitRubyPosition
 webkitTapHighlightColor
 webkitTextCombine
 webkitTextDecorationsInEffect
 webkitTextEmphasis
 webkitTextEmphasisColor
 webkitTextEmphasisPosition
 webkitTextEmphasisStyle
 webkitTextFillColor
 webkitTextOrientation
 webkitTextSecurity
 webkitTextStroke
 webkitTextStrokeColor
 webkitTextStrokeWidth
 webkitTransformOriginX
 webkitTransformOriginY
 webkitTransformOriginZ
 webkitUserDrag
 webkitUserModify
 webkitUserSelect
 webkitWritingMode
 whiteSpace
 widows
 width
 willChange
 wordBreak
 wordSpacing
 wordWrap
 writingMode
 x
 y
 zIndex
 zoom
 cssText
 length
 parentRule
*/