ondragenter Event | Internet Development Index |
Fires on the target element when the user drags the object to a valid drop target.
Syntax
Inline HTML <ELEMENT ondragenter = "handler" ... > All platforms Event property object.ondragenter = handler JScript only object.ondragenter = GetRef("handler") Visual Basic Scripting Edition (VBScript) 5.0 or later only Named script <SCRIPT FOR = object EVENT = ondragenter> Internet Explorer only
Event Information
Bubbles Yes Cancels Yes To invoke
- Drag the selection over a valid drop target within the browser.
- Drag the selection to a valid drop target within another browser window.
Default action Calls the associated event handler.
Event Object Properties
Although event handlers in the DHTML Object Model do not receive parameters directly, a handler can query an event object for data.
altKey Sets or retrieves a value that indicates the state of the ALT key. altLeft Sets or retrieves a value that indicates the state of the left ALT key. cancelBubble Sets or retrieves whether the current event should bubble up the hierarchy of event handlers. clientX Sets or retrieves the x-coordinate of the mouse pointer's position relative to the client area of the window, excluding window decorations and scroll bars. clientY Sets or retrieves the y-coordinate of the mouse pointer's position relative to the client area of the window, excluding window decorations and scroll bars. ctrlKey Sets or retrieves the state of the CTRL key. ctrlLeft Sets or retrieves the state of the left CTRL key. dataTransfer Provides access to predefined clipboard formats for use in drag-and-drop operations. offsetX Sets or retrieves the x-coordinate of the mouse pointer's position relative to the object firing the event. offsetY Sets or retrieves the y-coordinate of the mouse pointer's position relative to the object firing the event. returnValue Sets or retrieves the return value from the event. screenX Retrieves the x-coordinate of the mouse pointer's position relative to the user's screen. screenY Sets or retrieves the y-coordinate of the mouse pointer's position relative to the user's screen. shiftLeft Retrieves the state of the left SHIFT key. srcElement Sets or retrieves the object that fired the event. type Sets or retrieves the event name from the event object. x Sets or retrieves the x-coordinate, in pixels, of the mouse pointer's position relative to a relatively positioned parent element. y Sets or retrieves the y-coordinate, in pixels, of the mouse pointer's position relative to a relatively positioned parent element.
Remarks
You can handle the ondragenter event on the source or on the target object. Of the target events, it is the first to fire during a drag operation. Target events use the getData method to stipulate which data and data formats to retrieve. The list of drag-and-drop target events includes:
When scripting custom functionality, use the returnValue property to disable the default action.
Example
This example shows when and where each event fires during a drag-and-drop operation by listing each event and the name of the object firing it in a list box.
<HEAD> <SCRIPT> var oNewOption; // Code for dynamically adding options to a select. function ShowResults() { // Information about the events // and what object fired them. arg = event.type + " fired by " + event.srcElement.id; oNewOption = new Option(); oNewOption.text = arg; oResults.add(oNewOption,0); } </SCRIPT> </HEAD> <BODY> <P>Source events are wired up to this text box.</P> <INPUT ID=txtDragOrigin VALUE="Text to Drag" ondragstart="ShowResults()" ondrag="ShowResults()" ondragend="ShowResults()" > <P>Target events are bound to this text box.</P> <INPUT ID=txtDragDestination VALUE="Drag Destination" ondragenter="ShowResults()" ondragover="ShowResults()" ondragleave="ShowResults()" ondrop="ShowResults()" > <SELECT ID=oResults SIZE=30> <OPTION>List of Events Fired </SELECT> </BODY>This feature requires Microsoft® Internet Explorer 5 or later. Click the following icon to install the latest version. Then reload this page to view the sample.
Standards Information
There is no public standard that applies to this event.
Applies To
A, ACRONYM, ADDRESS, AREA, B, BDO, BIG, BLOCKQUOTE, BODY, BUTTON, CAPTION, CENTER, CITE, CODE, CUSTOM, DD, DEL, DFN, DIR, DIV, DL, document, DT, EM, FIELDSET, FONT, FORM, hn, HR, I, IMG, INPUT type=button, INPUT type=checkbox, INPUT type=file, INPUT type=image, INPUT type=password, INPUT type=radio, INPUT type=reset, INPUT type=submit, INPUT type=text, KBD, LABEL, LI, LISTING, MAP, MARQUEE, MENU, NOBR, OBJECT, OL, P, PLAINTEXT, PRE, Q, S, SAMP, SELECT, SMALL, SPAN, STRIKE, STRONG, SUB, SUP, TABLE, TBODY, TD, TEXTAREA, TFOOT, TH, THEAD, TR, TT, U, UL, VAR, XMP
See Also
About DHTML Data Transfer, ondragstart