abbr th Alternative label to use for the header cell when referencing the cell in other contexts Text* accept input Hint for expected file type in file upload controls Set of comma-separated tokens* consisting of valid MIME type strings with no parameters or audio/*, video/*, or image/* accept-charset form Character encodings to use for form submission ASCII case-insensitive match for "UTF-8" accesskey HTML elements Keyboard shortcut to activate or focus element Ordered set of unique space-separated tokens, none of which are identical to another, each consisting of one code point in length action form URL to use for form submission Valid non-empty URL potentially surrounded by spaces allow iframe Permissions policy to be applied to the iframe's contents Serialized permissions policy allowfullscreen iframe Whether to allow the iframe's contents to use requestFullscreen() Boolean attribute alpha input Allow the color's alpha component to be set Boolean attribute alt area; img; input Replacement text for use when images are not available Text* as link Potential destination for a preload request (for rel="preload" and rel="modulepreload") Potential destination, for rel="preload"; script-like destination, for rel="modulepreload" async script Execute script when available, without blocking while fetching Boolean attribute autocapitalize HTML elements Recommended autocapitalization behavior (for supported input methods) "on"; "off"; "none"; "sentences"; "words"; "characters" autocomplete form Default setting for autofill feature for controls in the form "on"; "off" autocomplete input; select; textarea Hint for form autofill feature Autofill field name and related tokens* autocorrect HTML elements Recommended autocorrection behavior (for supported input methods) "on"; "off" autofocus HTML elements Automatically focus the element when the page is loaded Boolean attribute autoplay audio; video Hint that the media resource can be started automatically when the page is loaded Boolean attribute blocking link; script; style Whether the element is potentially render-blocking Unordered set of unique space-separated tokens* charset meta Character encoding declaration "utf-8" checked input Whether the control is checked Boolean attribute cite blockquote; del; ins; q Link to the source of the quotation or more information about the edit Valid URL potentially surrounded by spaces class HTML elements Classes to which the element belongs Set of space-separated tokens closedby dialog Which user actions will close the dialog "any"; "closerequest"; "none"; color link Color to use when customizing a site's icon (for rel="mask-icon") CSS <color> colorspace input The color space of the serialized color "limited-srgb"; "display-p3" cols textarea Maximum number of characters per line Valid non-negative integer greater than zero colspan td; th Number of columns that the cell is to span Valid non-negative integer greater than zero command button Indicates to the targeted element which action to take. "toggle-popover"; "show-popover"; "hide-popover"; "close"; "show-modal"; a custom command keyword commandfor button Targets another element to be invoked. ID* content meta Value of the element Text* contenteditable HTML elements Whether the element is editable "true"; "plaintext-only"; "false" controls audio; video Show user agent controls Boolean attribute coords area Coordinates for the shape to be created in an image map Valid list of floating-point numbers* crossorigin audio; img; link; script; video How the element handles crossorigin requests "anonymous"; "use-credentials" data object Address of the resource Valid non-empty URL potentially surrounded by spaces datetime del; ins Date and (optionally) time of the change Valid date string with optional time datetime time Machine-readable value Valid month string, valid date string, valid yearless date string, valid time string, valid local date and time string, valid time-zone offset string, valid global date and time string, valid week string, valid non-negative integer, or valid duration string decoding img Decoding hint to use when processing this image for presentation "sync"; "async"; "auto" default track Enable the track if no other text track is more suitable Boolean attribute defer script Defer script execution Boolean attribute dir HTML elements The text directionality of the element "ltr"; "rtl"; "auto" dir bdo The text directionality of the element "ltr"; "rtl" dirname input; textarea Name of form control to use for sending the element's directionality in form submission Text* disabled button; input; optgroup; option; select; textarea; form-associated custom elements Whether the form control is disabled Boolean attribute disabled fieldset Whether the descendant form controls, except any inside legend, are disabled Boolean attribute disabled link Whether the link is disabled Boolean attribute download a; area Whether to download the resource instead of navigating to it, and its filename if so Text draggable HTML elements Whether the element is draggable "true"; "false" enctype form Entry list encoding type to use for form submission "application/x-www-form-urlencoded"; "multipart/form-data"; "text/plain" enterkeyhint HTML elements Hint for selecting an enter key action "enter"; "done"; "go"; "next"; "previous"; "search"; "send" fetchpriority img; link; script Sets the priority for fetches initiated by the element "auto"; "high"; "low" for label Associate the label with form control ID* for output Specifies controls from which the output was calculated Unordered set of unique space-separated tokens consisting of IDs* form button; fieldset; input; object; output; select; textarea; form-associated custom elements Associates the element with a form element ID* formaction button; input URL to use for form submission Valid non-empty URL potentially surrounded by spaces formenctype button; input Entry list encoding type to use for form submission "application/x-www-form-urlencoded"; "multipart/form-data"; "text/plain" formmethod button; input Variant to use for form submission "GET"; "POST"; "dialog" formnovalidate button; input Bypass form control validation for form submission Boolean attribute formtarget button; input Navigable for form submission Valid navigable target name or keyword headers ; The header cells for this cell Unordered set of unique space-separated tokens consisting of IDs* height canvas; embed; iframe; img; input; object; source (in picture); video Vertical dimension Valid non-negative integer hidden HTML elements Whether the element is relevant "until-found"; "hidden"; the empty string high meter Low limit of high range Valid floating-point number* href a; area Address of the hyperlink Valid URL potentially surrounded by spaces href link Address of the hyperlink Valid non-empty URL potentially surrounded by spaces href base Document base URL Valid URL potentially surrounded by spaces hreflang a; link Language of the linked resource Valid BCP 47 language tag http-equiv meta Pragma directive "content-type"; "default-style"; "refresh"; "x-ua-compatible"; "content-security-policy" id HTML elements The element's ID Text* imagesizes link Image sizes for different page layouts (for rel="preload") Valid source size list imagesrcset link Images to use in different situations, e.g., high-resolution displays, small monitors, etc. (for rel="preload") Comma-separated list of image candidate strings inert HTML elements Whether the element is inert. Boolean attribute inputmode HTML elements Hint for selecting an input modality "none"; "text"; "tel"; "email"; "url"; "numeric"; "decimal"; "search" integrity link; script Integrity metadata used in Subresource Integrity checks [SRI] Text is HTML elements Creates a customized built-in element Valid custom element name of a defined customized built-in element ismap img Whether the image is a server-side image map Boolean attribute itemid HTML elements Global identifier for a microdata item Valid URL potentially surrounded by spaces itemprop HTML elements Property names of a microdata item Unordered set of unique space-separated tokens consisting of valid absolute URLs, defined property names, or text* itemref HTML elements Referenced elements Unordered set of unique space-separated tokens consisting of IDs* itemscope HTML elements Introduces a microdata item Boolean attribute itemtype HTML elements Item types of a microdata item Unordered set of unique space-separated tokens consisting of valid absolute URLs* kind track The type of text track "subtitles"; "captions"; "descriptions"; "chapters"; "metadata" label optgroup; option; track User-visible label Text lang HTML elements Language of the element Valid BCP 47 language tag or the empty string list input List of autocomplete options ID* loading iframe; img Used when determining loading deferral "lazy"; "eager" loop audio; video Whether to loop the media resource Boolean attribute low meter High limit of low range Valid floating-point number* max input Maximum value Varies* max meter; progress Upper bound of range Valid floating-point number* maxlength input; textarea Maximum length of value Valid non-negative integer media link; meta; source; style Applicable media Valid media query list method form Variant to use for form submission "GET"; "POST"; "dialog" min input Minimum value Varies* min meter Lower bound of range Valid floating-point number* minlength input; textarea Minimum length of value Valid non-negative integer multiple input; select Whether to allow multiple values Boolean attribute muted audio; video Whether to mute the media resource by default Boolean attribute name button; fieldset; input; output; select; textarea; form-associated custom elements Name of the element to use for form submission and in the form.elements API Text* name details Name of group of mutually-exclusive details elements Text* name form Name of form to use in the document.forms API Text* name iframe; object Name of content navigable Valid navigable target name or keyword name map Name of image map to reference from the usemap attribute Text* name meta Metadata name Text* name slot Name of shadow tree slot Text nomodule script Prevents execution in user agents that support module scripts Boolean attribute nonce HTML elements Cryptographic nonce used in Content Security Policy checks [CSP] Text novalidate form Bypass form control validation for form submission Boolean attribute open details Whether the details are visible Boolean attribute open dialog Whether the dialog box is showing Boolean attribute optimum meter Optimum value in gauge Valid floating-point number* pattern input Pattern to be matched by the form control's value Regular expression matching the JavaScript Pattern production ping a; area URLs to ping Set of space-separated tokens consisting of valid non-empty URLs placeholder input; textarea User-visible label to be placed within the form control Text* playsinline video Encourage the user agent to display video content within the element's playback area Boolean attribute popover HTML elements Makes the element a popover element "auto"; "manual"; popovertarget button; input Targets a popover element to toggle, show, or hide ID* popovertargetaction button; input Indicates whether a targeted popover element is to be toggled, shown, or hidden "toggle"; "show"; "hide" poster video Poster frame to show prior to video playback Valid non-empty URL potentially surrounded by spaces preload audio; video Hints how much buffering the media resource will likely need "none"; "metadata"; "auto" readonly input; textarea Whether to allow the value to be edited by the user Boolean attribute readonly form-associated custom elements Affects willValidate, plus any behavior added by the custom element author Boolean attribute referrerpolicy a; area; iframe; img; link; script Referrer policy for fetches initiated by the element Referrer policy rel a; area Relationship between the location in the document containing the hyperlink and the destination resource Unordered set of unique space-separated tokens* rel link Relationship between the document containing the hyperlink and the destination resource Unordered set of unique space-separated tokens* required input; select; textarea Whether the control is required for form submission Boolean attribute reversed ol Number the list backwards Boolean attribute rows textarea Number of lines to show Valid non-negative integer greater than zero rowspan td; th Number of rows that the cell is to span Valid non-negative integer sandbox iframe Security rules for nested content Unordered set of unique space-separated tokens, ASCII case-insensitive, consisting of
allow-downloads"allow-forms"allow-modals"allow-orientation-lock"allow-pointer-lock"allow-popups"allow-popups-to-escape-sandbox"allow-presentation"allow-same-origin"allow-scripts"allow-top-navigation"allow-top-navigation-by-user-activation"allow-top-navigation-to-custom-protocols"scope th Specifies which cells the header cell applies to "row"; "col"; "rowgroup"; "colgroup" selected option Whether the option is selected by default Boolean attribute shadowrootclonable template Sets clonable on a declarative shadow root Boolean attribute shadowrootcustomelementregistry template Enables declarative shadow roots to indicate they will use a custom element registry Boolean attribute shadowrootdelegatesfocus template Sets delegates focus on a declarative shadow root Boolean attribute shadowrootmode template Enables streaming declarative shadow roots "open"; "closed" shadowrootserializable template Sets serializable on a declarative shadow root Boolean attribute shape area The kind of shape to be created in an image map "circle"; "default"; "poly"; "rect" size input; select Size of the control Valid non-negative integer greater than zero sizes link Sizes of the icons (for rel="icon") Unordered set of unique space-separated tokens, ASCII case-insensitive, consisting of sizes* sizes img; source Image sizes for different page layouts Valid source size list slot HTML elements The element's desired slot Text span col; colgroup Number of columns spanned by the element Valid non-negative integer greater than zero spellcheck HTML elements Whether the element is to have its spelling and grammar checked "true"; "false"; the empty string src audio; embed; iframe; img; input; script; source (in video or audio); track; video Address of the resource Valid non-empty URL potentially surrounded by spaces srcdoc iframe A document to render in the iframe The source of an iframe srcdoc document* srclang track Language of the text track Valid BCP 47 language tag srcset img; source Images to use in different situations, e.g., high-resolution displays, small monitors, etc. Comma-separated list of image candidate strings start ol Starting value of the list Valid integer step input Granularity to be matched by the form control's value Valid floating-point number greater than zero, or "any" style HTML elements Presentational and formatting instructions CSS declarations* tabindex HTML elements Whether the element is focusable and sequentially focusable, and the relative order of the element for the purposes of sequential focus navigation Valid integer target a; area Navigable for hyperlink navigation Valid navigable target name or keyword target base Default navigable for hyperlink navigation and form submission Valid navigable target name or keyword target form Navigable for form submission Valid navigable target name or keyword title HTML elements Advisory information for the element Text title abbr; dfn Full term or expansion of abbreviation Text title input Description of pattern (when used with pattern attribute) Text title link Title of the link Text title link; style CSS style sheet set name Text translate HTML elements Whether the element is to be translated when the page is localized "yes"; "no" type a; link Hint for the type of the referenced resource Valid MIME type string type button Type of button "submit"; "reset"; "button" type embed; object; source Type of embedded resource Valid MIME type string type input Type of form control input type keyword type ol Kind of list marker "1"; "a"; "A"; "i"; "I" type script Type of script "module"; a valid MIME type string that is not a JavaScript MIME type essence match usemap img Name of image map to use Valid hash-name reference* value button; option Value to be used for form submission Text value data Machine-readable value Text* value input Value of the form control Varies* value li Ordinal value of the list item Valid integer value meter; progress Current value of the element Valid floating-point number width canvas; embed; iframe; img; input; object; source (in picture); video Horizontal dimension Valid non-negative integer wrap textarea How the value of the form control is to be wrapped for form submission "soft"; "hard" writingsuggestions HTML elements Whether the element can offer writing suggestions or not. "true"; "false"; the empty string
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