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em element | em object

[This documentation is preliminary and is subject to change.]

Emphasizes text, usually by rendering it in italic type.

Standards information

HTML 4.01 Specification, Section 9.2.1

HTML information

Closing Tag	required
CSS Display	inline

DOM Information

Inheritance Hierarchy

Node

Element

Members

The em object has these types of members:

Events
Methods
Properties

Events

The em object has these events.

Event	Description
onabort	Fires when the user aborts the download.
onactivate	Fires when the object is set as the active element.
onafterupdate	Fires on a databound object after successfully updating the associated data in the data source object.
onbeforeactivate	Fires immediately before the object is set as the active element.
onbeforecopy	Fires on the source object before the selection is copied to the system clipboard.
onbeforecut	Fires on the source object before the selection is deleted from the document.
onbeforedeactivate	Fires immediately before the activeElement is changed from the current object to another object in the parent document.
onbeforeeditfocus	Fires before an object contained in an editable element enters a UI Activation state or when an editable container object is control selection.
onbeforepaste	Fires on the target object before the selection is pasted from the system clipboard to the document.
onbeforeupdate	Fires on a databound object before updating the associated data in the data source object.
onblur	Fires when the object loses the input focus.
oncellchange	Fires when data changes in the data provider.
onchange	Fires when the contents of the object or selection have changed.
onclick	Fires when the user clicks the left mouse button on the object.
oncontextmenu	Fires when the user clicks the right mouse button in the client area, opening the context menu.
oncontrolselect	Fires when the user is about to make a control selection of the object.
oncut	Fires on the source element when the object or selection is removed from the document and added to the system clipboard.
ondataavailable	Fires periodically as data arrives from data source objects that asynchronously transmit their data.
ondatasetchanged	Fires when the data set exposed by a data source object changes.
ondatasetcomplete	Fires to indicate that all data is available from the data source object.
ondblclick	Fires when the user double-clicks the object.
ondeactivate	Fires when the activeElement is changed from the current object to another object in the parent document.
ondrag	Fires on the source object continuously during a drag operation.
ondragend	Fires on the source object when the user releases the mouse at the close of a drag operation.
ondragenter	Fires on the target element when the user drags the object to a valid drop target.
ondragleave	Fires on the target object when the user moves the mouse out of a valid drop target during a drag operation.
ondragover	Fires on the target element continuously while the user drags the object over a valid drop target.
ondragstart	Fires on the source object when the user starts to drag a text selection or selected object.
ondrop	Fires on the target object when the mouse button is released during a drag-and-drop operation.
onerror	Fires when an error occurs during object loading.
onerrorupdate	Fires on a databound object when an error occurs while updating the associated data in the data source object.
onfilterchange	Fires when a visual filter changes state or completes a transition.
onfocus	Fires when the object receives focus.
onfocusin	Fires for an element just prior to setting focus on that element.
onfocusout	Fires for the current element with focus immediately after moving focus to another element.
onhelp	Fires when the user presses the F1 key while the client is the active window.
oninput	Occurs when the text content of an element is changed through the user interface.
onkeydown	Fires when the user presses a key.
onkeypress	Fires when the user presses an alphanumeric key.
onkeyup	Fires when the user releases a key.
onlayoutcomplete	Fires when the print or print preview layout process finishes filling the current LayoutRect object with content from the source document.
onload	Fires immediately after the client loads the object.
onlosecapture	Fires when the object loses the mouse capture.
onmousedown	Fires when the user clicks the object with either mouse button.
onmouseenter	Fires when the user moves the mouse pointer into the object.
onmouseleave	Fires when the user moves the mouse pointer outside the boundaries of the object.
onmousemove	Fires when the user moves the mouse over the object.
onmouseout	Fires when the user moves the mouse pointer outside the boundaries of the object.
onmouseover	Fires when the user moves the mouse pointer into the object.
onmouseup	Fires when the user releases a mouse button while the mouse is over the object.
onmousewheel	Fires when the wheel button is rotated.
onmove	Fires when the object moves.
onmoveend	Fires when the object stops moving.
onmovestart	Fires when the object starts to move.
onpaste	Fires on the target object when the user pastes data, transferring the data from the system clipboard to the document.
onpropertychange	Fires when a property changes on the object.
onreadystatechange	Fires when the state of the object has changed.
onreset	Fires when the user resets a form.
onresize	Fires when the size of the object is about to change.
onresizeend	Fires when the user finishes changing the dimensions of the object in a control selection.
onresizestart	Fires when the user begins to change the dimensions of the object in a control selection.
onrowenter	Fires to indicate that the current row has changed in the data source and new data values are available on the object.
onrowexit	Fires just before the data source control changes the current row in the object.
onrowsdelete	Fires when rows are about to be deleted from the recordset.
onrowsinserted	Fires just after new rows are inserted in the current recordset.
onscroll	Fires when the user repositions the scroll box in the scroll bar on the object.
onselect	Fires when the current selection changes.
onselectstart	Fires when the object is being selected.

Methods

The em object has these methods.

Method	Description
addBehavior	Attaches a behavior to the element. This method is not supported for Metro style apps using JavaScript.
appendChild	Appends an element as a child to the object.
applyElement	Makes the element either a child or parent of another element.
attachEvent	Binds the specified function to an event, so that the function gets called whenever the event fires on the object.
blur	Causes the element to lose focus and fires the onblur event.
clearAttributes	Removes all attributes and values from the object.
click	Simulates a click by causing the onclick event to fire.
cloneNode	Copies a reference to the object from the document hierarchy.
componentFromPoint	Returns the component located at the specified coordinates via certain events.
contains	Checks whether the given element is contained within the object.
detachEvent	Unbinds the specified function from the event, so that the function stops receiving notifications when the event fires.
doScroll	Simulates a click on a scroll bar component.
fireEvent	Fires a specified event on the object.
focus	Causes the element to receive the focus and executes the code specified by the onfocus event.
getAdjacentText	Returns the adjacent text string.
getAttribute	Retrieves the value of the specified attribute.
getAttributeNode	Retrieves an attribute object referenced by the attribute.name property.
getAttributeNodeNS	Gets an attribute object that matches the specified namespace and name.
getAttributeNS	Gets the value of the specified attribute within the specified namespace.
getBoundingClientRect	Retrieves an object that specifies the bounds of a collection of TextRectangle objects.
getClientRects	Retrieves a collection of rectangles that describes the layout of the contents of an object or range within the client. Each rectangle describes a single line.
getElementsByClassName	Gets a collection of objects that are based on the value of the CLASS attribute.
getElementsByTagName	Retrieves a collection of objects based on the specified element name.
getElementsByTagNameNS	Gets a collection of objects that are based on the specified element names within a specified namespace.
hasAttribute	Determines whether an attribute with the specified name exists.
hasAttributeNS	Determines whether an attribute that has the specified namespace and name exists.
hasAttributes	Determines whether one or more attributes exist for the object.
hasChildNodes	Returns a value that indicates whether the object has children.
insertAdjacentElement	Inserts an element at the specified location.
insertAdjacentHTML	Inserts the given HTML text into the element at the location.
insertAdjacentText	Inserts the given text into the element at the specified location.
insertBefore	Inserts an element into the document hierarchy as a child node of a parent object.
mergeAttributes	Copies all read/write attributes to the specified element.
msMatchesSelector	Determines whether an object matches the specified selector.
normalize	Merges adjacent DOM objects to produce a normalized document object model.
querySelector	Retrieves the first DOM element node from descendants of the starting element node that match any selector within the supplied selector string.
querySelectorAll	Retrieves all DOM element nodes from descendants of the starting element node that match any selector within the supplied selector strings.
releaseCapture	Removes mouse capture from the object in the current document.
removeAttribute	Removes an attribute from an object.
removeAttributeNode	Removes an attribute object from the object.
removeAttributeNS	Removes the specified attribute from the object.
removeBehavior	Detaches a behavior from the element.
removeChild	Removes a child node from the object.
removeNode	Removes the object from the document hierarchy.
replaceAdjacentText	Replaces the text adjacent to the element.
replaceChild	Replaces an existing child element with a new child element.
replaceNode	Replaces the object with another element.
scrollIntoView	Causes the object to scroll into view, aligning it either at the top or bottom of the window.
setActive	Sets the object as active without setting focus to the object.
setAttribute	Sets the value of the specified attribute.
setAttributeNode	Sets an attribute object node as part of the object.
setAttributeNodeNS	Sets an attribute object as part of the object.
setAttributeNS	Sets the value of the specified attribute within the specified namespace.
setCapture	Sets the mouse capture to the object that belongs to the current document.
swapNode	Exchanges the location of two objects in the document hierarchy.

Properties

The em object has these properties.

Property	Description
accessKey	Sets or retrieves the access key for the object.
animation	Gets or sets one or more shorthand values that specify all animation properties (except animation-play-state) for a set of corresponding object properties identified in the CSS @keyframes at-rule specified by the animation-name property.
animationDelay	Gets or sets one or more values that specify the offset within an animation cycle (the amount of time from the start of a cycle) before the animation is displayed for a set of corresponding object properties identified in the CSS @keyframes at-rule specified by the animation-name property.
animationDirection	Gets or sets one or more values that specify the direction of play for an animation cycle.
animationDuration	Gets or sets one or more values that specify the length of time to complete one cycle of the animation.
animationFillMode	Gets or sets one or more values that specify whether the effects of an animation are visible before or after it plays.
animationIterationCount	Gets or sets one or more values that specify the number of times an animation cycle is played.
animationName	Gets or sets a value that identifies one or more animation names. An animation name identifies (or selects) a CSS @keyframes at-rule.
animationPlayState	Gets or sets one or more values that specify whether an animation is playing or paused.
animationTimingFunction	Gets or sets one or more values that specify the intermediate property values to be used during a single cycle of an animation on a set of corresponding object properties identified in the CSS @keyframes at-rule specified by the animationName property.
ATOMICSELECTION	Specifies whether the element and its contents must be selected as a whole, indivisible unit.
attributes	Retrieves a collection of attributes of the object.
backfaceVisibility	Gets or sets a value that specifies whether the back face (reverse side) of an object is visible.
canHaveChildren	Gets a value indicating whether the object can contain child objects.
canHaveHTML	Retrieves the value indicating whether the object can contain rich HTML markup.
childElementCount	Retrieves the number of immediate child nodes of the current element or a zero if the element does not contain any child nodes. childElementCount does not return all child nodes, only child nodes that are nodeType =1, or element nodes.
className	Sets or retrieves the class of the object.
clientHeight	Retrieves the height of the object including padding, but not including margin, border, or scroll bar.
clientLeft	Retrieves the distance between the offsetLeft property and the true left side of the client area.
clientTop	Retrieves the distance between the offsetTop property and the true top of the client area.
clientWidth	Retrieves the width of the object including padding, but not including margin, border, or scroll bar.
contentEditable	Sets or retrieves the string that indicates whether the user can edit the content of the object.
dir	Sets or retrieves the reading order of the object.
firstChild	Gets a reference to the first child in the childNodes collection of the object.
firstElementChild	Retrieves a reference to the first child element, or null if there are no child elements.
hideFocus	Sets or gets the value that indicates whether the object visibly shows that it has focus.
id	Sets or retrieves the string identifying the object.
innerHTML	Sets or retrieves the HTML between the start and end tags of the object.
innerText	Sets or retrieves the text between the start and end tags of the object.
isContentEditable	Gets the value that indicates whether the user can edit the contents of the object.
isDisabled	Gets the value that indicates whether the user can interact with the object.
isMultiLine	Retrieves the value indicating whether the content of the object contains one or more lines.
isTextEdit	Retrieves whether a TextRange object can be created using the object.
lang	Sets or retrieves the language to use.
language	Sets or retrieves the language in which the current script is written.
lastChild	Gets a reference to the last child in the childNodes collection of an object.
lastElementChild	Retrieves a reference to the last child element or null if there are no child elements.
msGridColumn	Gets or sets a value that specifies in which column of the grid to place the object.
msGridColumnAlign	Gets or sets a value that specifies the horizontal alignment of the object within the grid column.
msGridColumns	Gets or sets one or more values that specify the width of each grid column within the object.
msGridColumnSpan	Gets or sets a value that specifies the number of columns of the grid that the object spans.
msGridLayer	Do not use. This property's functionality has been replaced by the z-index property, and is no longer recognized by Internet Explorer. To ensure compatibility in the future, applications using this property should be updated accordingly.
msGridRow	Gets or sets a value that specifies in which row of the grid to place the object.
msGridRowAlign	Gets or sets a value that specifies the vertical alignment of the object within the grid row.
msGridRows	Gets or sets one or more values that specify the height of each grid row within the object.
msGridRowSpan	Gets or sets a value that specifies the number of rows of the grid that the object spans.
nextElementSibling	Retrieves a reference to the sibling element that immediately follows or null if the element does not have any sibling elements that follow it.
nextSibling	Retrieves a reference to the next child of the parent for the object.
nodeName	Gets the name of a particular type of node.
nodeType	Retrieves the type of the requested node.
nodeValue	Gets or sets the value of a node.
offsetHeight	Retrieves the height of the object relative to the layout or coordinate parent, as specified by the offsetParent property.
offsetLeft	Retrieves the calculated left position of the object relative to the layout or coordinate parent, as specified by the offsetParent property.
offsetParent	Retrieves a reference to the container object that defines the offsetTop and offsetLeft properties of the object.
offsetTop	Retrieves the calculated top position of the object relative to the layout or coordinate parent, as specified by the offsetParent property.
offsetWidth	Retrieves the width of the object relative to the layout or coordinate parent, as specified by the offsetParent property.
outerHTML	Sets or retrieves the object and its content in HTML.
outerText	Sets or retrieves the text of the object.
ownerDocument	Retrieves the document object associated with the node.
parentElement	Retrieves the parent object in the object hierarchy.
parentNode	Retrieves the parent object in the document hierarchy.
parentTextEdit	Retrieves the container object in the document hierarchy that can be used to create a TextRange containing the original object.
perspective	Gets or sets a value that represents the perspective from which all child elements of the object are viewed.
perspectiveOrigin	Gets or sets one or two values that represent the origin (the vanishing point for the 3-D space) of an object with an perspective property declaration.
previousElementSibling	Retrieves a reference to the immediately preceding sibling element or null if the element does not have any preceding siblings.
previousSibling	Gets a reference to the previous child of the parent for the object.
readyState	Retrieves the current state of the object.
recordNumber	Retrieves the ordinal record from the data set that generated the object.
role	Sets or retrieves the role for this element.
scopeName	Gets the namespace defined for the element. This property is not supported for Metro style apps using JavaScript.
scrollHeight	Retrieves the scrolling height of the object.
scrollLeft	Sets or retrieves the distance between the left edge of the object and the leftmost portion of the content currently visible in the window.
scrollTop	Sets or retrieves the distance between the top of the object and the topmost portion of the content currently visible in the window.
scrollWidth	Retrieves the scrolling width of the object.
sourceIndex	Retrieves the ordinal position of the object, in source order, as the object appears in the document's all collection.
STYLE	Sets an inline style for the element.
tabIndex	Sets or retrieves the index that defines the tab order for the object.
tagName	Retrieves the tag name of the object.
tagUrn	Sets or gets the URN specified in the namespace declaration. This property is not supported for Metro style apps using JavaScript.
title	Sets or retrieves advisory information (a ToolTip) for the object.
transformStyle	Gets or sets a value that specifies how child elements of the object are rendered in 3-D space.
transition	Gets or sets one or more shorthand values that specify the transition properties for a set of corresponding object properties identified in the transition-property property.
transitionDelay	Gets or sets one or more values that specify the offset within a transition (the amount of time from the start of a transition) before the transition is displayed for a set of corresponding object properties identified in the transition-property property.
transitionDuration	Gets or sets one or more values that specify the durations of transitions on a set of corresponding object properties identified in the transition-property property.
transitionProperty	Gets or sets a value that identifies the CSS property name or names to which the transition effect (defined by transition-duration, transition-timing-function, and transition-delay) is applied when a new property value is specified.
transitionTimingFunction	Gets or sets one or more values that specify the intermediate property values to be used during a transition on a set of corresponding object properties identified in the transition-property property.
uniqueID	Retrieves an autogenerated, unique identifier for the object.
uniqueNumber	Retrieves the element's unique number.

Remarks

Examples

This example uses the EM element to emphasize text.

Copiar


<EM>This text will be emphasized in some way (most likely in italic).</EM>