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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 cssFloat cursor direction display emptyCells filter flex flexBasis flexDirection flexFlow flexGrow flexShrink flexWrap 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


Style flex Property

Example

Let all the flexible items be the same length, regardless of its content:

for (i = 0; i < y.length; i++) {
  y[i].style.flex = "1";
}
Try it Yourself »

Definition and Usage

The flex property sets or returns the length of the item, relative to the rest of the flexible items inside the same container.

The flex property is a shorthand for the flexGrow, flexShrink, and the flexBasis properties.

Note: If the element is not a flexible item, the flex property has no effect.


Browser Support

Property
flex Yes 11.0 Yes 9.0 Yes


Syntax

Return the flex property:

object.style.flex

Set the flex property:

object.style.flex = "flex-grow flex-shrink flex-basis|auto|initial|inherit"

Property Values

Value Description
flex-grow A number specifying how much the item will grow relative to the rest of the flexible items
flex-shrink A number specifying how much the item will shrink relative to the rest of the flexible items
flex-basis The length of the item. Legal values: "auto", "inherit", or a number followed by "%", "px", "em" or any other length unit
auto Same as 1 1 auto.
initial Same as 0 1 auto. Read about initial
none Same as 0 0 auto.
inherit Inherits this property from its parent element. Read about inherit

Technical Details

Default Value: 0 1 auto
Return Value: A String, representing the flex property of an element
CSS Version CSS3

Related Pages

CSS reference: flex property

HTML DOM STYLE Reference: flexBasis property

HTML DOM STYLE Reference: flexDirection property

HTML DOM STYLE Reference: flexFlow property

HTML DOM STYLE Reference: flexGrow property

HTML DOM STYLE Reference: flexShrink property

HTML DOM STYLE Reference: flexWrap property