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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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<a> <abbr> <address> <area> <article> <aside> <audio> <b> <base> <bdo> <blockquote> <body> <br> <button> <canvas> <caption> <cite> <code> <col> <colgroup> <datalist> <dd> <del> <details> <dfn> <dialog> <div> <dl> <dt> <em> <embed> <fieldset> <figcaption> <figure> <footer> <form> <head> <header> <h1> - <h6> <hr> <html> <i> <iframe> <img> <ins> <input> button <input> checkbox <input> color <input> date <input> datetime <input> datetime-local <input> email <input> file <input> hidden <input> image <input> month <input> number <input> password <input> radio <input> range <input> reset <input> search <input> submit <input> text <input> time <input> url <input> week <kbd> <label> <legend> <li> <link> <map> <mark> <menu> <menuitem> <meta> <meter> <nav> <object> <ol> <optgroup> <option> <output> <p> <param> <pre> <progress> <q> <s> <samp> <script> <section> <select> <small> <source> <span> <strong> <style> <sub> <summary> <sup> <table> <tbody> <td> <tfoot> <th> <thead> <tr> <textarea> <time> <title> <track> <u> <ul> <var> <video>

Other References

CSSStyleDeclaration JS Conversion


HTML DOM Document cookie

Example

Get all cookies associated with this document:

let allCookies = document.cookie;
Try it Yourself »

Definition and Usage

The cookie property sets or returns a semicolon-separated list of key=value pairs (document cookies).

An example of creating a cookie:

document.cookie="username=John Doe; expires=Thu, 18 Dec 2013 12:00:00 UTC; path=/";

Note

Cookies cannot contain commas, semicolons or whitespaces.

The encodeURIComponent() Method ensures they don't.

See Also:

JavaScript Cookies Tutorial

Advice:

Somtimes the Storage API is a better tool:

The localStorage Property

The sessionStorage Property



Syntax

Return the cookie:

document.cookie

Set the cookie:

document.cookie = newCookie

Parameter

A semicolon-separated list of name=value pairs, followed with any of thise optional values:

expires=date
A date in GMT format (Use the Date.toUTCString method).
Default value: The cookie is deleted when the browser is closed.

max-age=seconds
The max age before the cookie is deleted.
If to 0 or a date in the past, the cookie is deleted.

path=path
An absoulute path to the directory the cookie belongs to ('/dir').
Default value: Current directory.

domain=domainname
The domain of the site ('example.com').
Default value: The domain of the document.

secure
Use a secure protocol (https) for sending the cookie to the server.

Return Value

Type Description
StringA semicolon-separated list of key=value pairs (document cookies).

Cookies vs Local Storage

Cookies are for client-server (browser-server) applications.

Local storage are for client (browser) applications.

Cookies are associated with websites. If the data is for client use, sending cookies in every HTTP header is waist of bandwith.

Some users have cookies disabled as a rule in their browsers.

A Cookie has a size limit of 4 Kilobytes. Local Storage has a limit of 5 Megabytes per domain.

A Cookie have expiration date. Local Storage has not.


Browser Support

document.cookie is a DOM Level 2 (2001) feature.

It is fully supported in all browsers:

Chrome IE Edge Firefox Safari Opera
Yes 9-11 Yes Yes Yes Yes