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alignContent alignItems alignSelf animation animationDelay animationDirection animationDuration animationFillMode animationIterationCount animationName animationTimingFunction animationPlayState background backgroundAttachment backgroundColor backgroundImage backgroundPosition backgroundRepeat backgroundClip backgroundOrigin backgroundSize backfaceVisibility 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 captionSide caretColor clear clip color columnCount columnFill columnGap columnRule columnRuleColor columnRuleStyle columnRuleWidth columns columnSpan columnWidth counterIncrement counterReset cursor direction display emptyCells filter flex flexBasis flexDirection flexFlow flexGrow flexShrink flexWrap cssFloat font fontFamily fontSize fontStyle fontVariant fontWeight fontSizeAdjust height isolation justifyContent left letterSpacing lineHeight listStyle listStyleImage listStylePosition listStyleType margin marginBottom marginLeft marginRight marginTop maxHeight maxWidth minHeight minWidth objectFit objectPosition opacity order orphans outline outlineColor outlineOffset outlineStyle outlineWidth overflow overflowX overflowY padding paddingBottom paddingLeft paddingRight paddingTop pageBreakAfter pageBreakBefore pageBreakInside perspective perspectiveOrigin position quotes resize right scrollBehavior tableLayout tabSize textAlign textAlignLast textDecoration textDecorationColor textDecorationLine textDecorationStyle textIndent textOverflow textShadow textTransform top transform transformOrigin transformStyle transition transitionProperty transitionDuration transitionTimingFunction transitionDelay unicodeBidi userSelect verticalAlign visibility width wordBreak wordSpacing wordWrap widows zIndex

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CSSStyleDeclaration JS Conversion

HTML DOM compareDocumentPosition() Method

Element Object


Find out where one paragraph is positioned compared to another paragraph:

var p1 = document.getElementById("p1");
var p2 = document.getElementById("p2");
var x = p1.compareDocumentPosition(p2);
Try it Yourself »

Definition and Usage

The compareDocumentPosition() method compares two nodes, and returns an integer describing where they are positioned in the document.

Look at the example above. The possible return values would specify:

1: No relationship, the two nodes do not belong to the same document.

2: The first node (p1) is positioned after the second node (p2).

4: The first node (p1) is positioned before the second node (p2).

8: The first node (p1) is positioned inside the second node (p2).

16: The second node (p2) is positioned inside the first node (p1).

32: No relationship, or the two nodes are two attributes on the same element.

Note: The return value could also be a combination of values. I.e. the returnvalue 20 means that p2 is inside p1 (16) AND p1 is positioned before p2 (4).

Browser Support

The numbers in the table specify the first browser version that fully supports the method.

compareDocumentPosition() Yes 9.0 Yes Yes Yes



Parameter Values

Parameter Type Description
node Node object Required. Specifies the node to compare with the current node

Technical Details

Return Value: A Number, representing where two nodes are positioned compared to each other.

Possible return values:

1 (No relationship, the two nodes do not belong to the same document)

2 (The first node (p1) is positioned after the second node (p2))

4 (The first node (p1) is positioned before the second node (p2))

8 (The first node (p1) is positioned inside the second node (p2))

16 (The second node (p2) is positioned inside the first node (p1))

32 (No relationship, or the two nodes are two attributes on the same element)

DOM Version Core Level 1 Node Object

Element Object