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| Property | Describe |
| AccessKey | Specifies the shortcut key for activating an element. |
| Class | Specifies one or more class names for an element (referencing a class in a style sheet). |
| Contenteditable | Specifies whether the element content can be edited. |
| ContextMenu | The context menu for the specified element. The context menu is displayed when the user clicks on an element. |
| data-* | Private custom data that is used to store pages or applications. |
| Dir | Specifies the text direction of the content in the element. |
| Draggable | Specifies whether the element can be dragged. |
| Dropzone | Specifies whether to copy, move, or link while dragging the data that is being dragged. |
| Hidden | The specified element is still not or is no longer relevant. |
| Id | The unique ID of the specified element. |
| Lang | The language that specifies the content of the element. |
| SpellCheck | Specifies whether to check spelling and grammar of elements. |
| Style | The inline CSS style for the specified element. |
| TabIndex | Specifies the tab order of the elements. |
| Title | Specifies additional information about the element. |
| Translate | Specifies whether the element content should be translated. |
Events triggered for the Window object (applied to <body> tags):
| Property | Value | Describe |
| Onafterprint | Script | A script that runs after the document is printed. |
| Onbeforeprint | Script | A script that runs before the document is printed. |
| onBeforeUnload | Script | The script that runs before the document is unloaded. |
| OnError | Script | A script that runs when an error occurs. |
| Onhaschange | Script | The script that runs when the document has changed. |
| OnLoad | Script | Triggered after the page finishes loading. |
| OnMessage | Script | The script that runs when the message is triggered. |
| Onoffline | Script | A script that runs when the document is offline. |
| Ononline | Script | The script that runs when the document is online. |
| Onpagehide | Script | The script that runs when the window is hidden. |
| Onpageshow | Script | The script that is run when the window becomes visible. |
| Onpopstate | Script | The script that runs when the window history changes. |
| Onredo | Script | The script that is run when the document is executed for revocation (redo). |
| OnResize | Script | triggered when the browser window is resized. |
| Onstorage | Script | Scripts that run after the Web Storage zone is updated. |
| OnUndo | Script | The script that runs when the document executes undo. |
| OnUnload | Script | Triggered once the page has been downloaded (or the browser window has been closed). |
Events triggered by actions within an HTML form (applied to almost all HTML elements, but most commonly in form elements)
| Property | Value | Describe |
| Onblur | Script | The script that runs when the element loses focus. |
| OnChange | Script | A script that runs when the element value is changed. |
| OnContextMenu | Script | The script that is run when the context menu is triggered. |
| onfocus | Script | The script that runs when the element gets focus. |
| Onformchange | Script | A script that runs when the form changes. |
| Onforminput | Script | The script that is run when the form obtains user input. |
| Oninput | Script | The script that is run when the element obtains user input. |
| Oninvalid | Script | The script to run when the element is invalid. |
| OnReset | Script | triggered when the reset button in the form is clicked. Not supported in HTML5. |
| Onselect | Script | triggered when the text in the element is selected. |
| OnSubmit | Script | Triggered when the form is submitted. |
| onfocus | Script | The script that runs when the element gets focus. |
| Onformchange | Script | A script that runs when the form changes. |
| Onforminput | Script | The script that is run when the form obtains user input. |
| Oninput | Script | The script that is run when the element obtains user input. |
| Oninvalid | Script | The script to run when the element is invalid. |
Events triggered by a keyboard or similar user action
| Property | Value | Describe |
| OnKeyDown | Script | Triggered when the user presses the key. |
| onkeypress | Script | Triggered when the user taps the button. |
| OnKeyUp | Script | Triggered when the user releases the key. |
Events triggered by a mouse or similar user action:
| Property | Value | Describe |
| OnClick | Script | triggered when a mouse click occurs on an element. |
| OnDblClick | Script | triggered when a mouse double-click occurs on an element. |
| Ondrag | Script | The script that is run when the element is dragged. |
| Ondragend | Script | A script that runs at the end of a drag operation. |
| OnDragEnter | Script | A script that runs when an element has been dragged into a valid drop area. |
| OnDragLeave | Script | The script that runs when the element leaves a valid drag-and-drop target. |
| OnDragOver | Script | The script that runs when the element is being dragged on a valid drag-and-drop target. |
| Ondragstart | Script | The script that runs at the beginning of the drag operation. |
| OnDrop | Script | The script that is run when the dragged element is being dragged and dropped. |
| OnMouseDown | Script | triggered when the mouse button is pressed on the element. |
| OnMouseMove | Script | triggered when the mouse pointer moves over an element. |
| onmouseout | Script | triggered when the mouse pointer moves out of the element. |
| onmouseover | Script | triggered when the mouse pointer moves over an element. |
| OnMouseUp | Script | triggered when the mouse button is released on the element. |
| OnMouseWheel | Script | The script that runs when the mouse wheel is being scrolled. |
| Onscroll | Script | The script that is run when the element scroll bar is scrolled. |
Events triggered by media (such as video, image, and audio) (for all HTML elements, but common in media elements such as <audio>, <embed>, , <object>, and <video >)
| Property | Value | Describe |
| Onabort | Script | The script to run on exit. |
| Oncanplay | Script | A script that runs when the file is ready to start playing (when the buffer is sufficient to start). |
| Oncanplaythrough | Script | A script that runs when the media is able to play to the end without having to stop because of buffering. |
| Ondurationchange | Script | A script that runs when the medium length changes. |
| Onemptied | Script | A script that runs when a failure occurs and the file is suddenly unavailable (such as when the connection is accidentally disconnected). |
| onended | Script | A script that runs when the media has reached the end (a message similar to "thank-you-watch" can be sent). |
| OnError | Script | The script that is run when an error occurs during file load. |
| Onloadeddata | Script | The script that runs when the media data is loaded. |
| Onloadedmetadata | Script | Scripts that run when metadata (such as resolution and duration) is loaded. |
| Onloadstart | Script | A script that runs before the file starts to load and does not actually load any data. |
| OnPause | Script | A script that runs when the media is paused by the user or program. |
| Onplay | Script | The script that runs when the media is ready to start playback. |
| Onplaying | Script | The script that runs when the media has started playing. |
| OnProgress | Script | The script that runs when the browser is acquiring media data. |
| Onratechange | Script | Scripts that run whenever the playback rate changes (such as when the user switches to slow or fast forward mode). |
| onReadyStateChange | Script | Scripts that run whenever the readiness state changes (readiness State monitors the state of the media data). |
| Onseeked | Script | The script that runs when the seeking property is set to False (indicating that the location has ended). |
| Onseeking | Script | The script that runs when the seeking property is set to True (indicating that positioning is active). |
| Onstalled | Script | A script that runs when the browser fails to retrieve media data for whatever reason. |
| Onsuspend | Script | A script that runs when the media data is terminated for whatever reason before the medium data is fully loaded. |
| Ontimeupdate | Script | A script that runs when the playback position changes, such as when the user is fast-forward to a different location in the media. |
| Onvolumechange | Script | A script that runs whenever the volume changes, including setting the volume to mute. |
| Onwaiting | Script | Run the script when the media has stopped playing but intends to continue playing (such as when the media pauses to buffer more data) |
The ① property always appears in the form of a name/value pair, such as name= "value".
The ② property is always specified in the start tag of the HTML element.
③ attribute Instance
<a href= "http://www.w3school.com.cn" >this is a link</a> the address of the link is specified in the href attribute
<H1 align= "Center" >align defining the beginning of the title
<body bgcolor= "Yellow" >bgcolor defines the background color of the body of the HTML document
<table border= "1" > Border define Table borders
④html tip: Use lowercase attributes
⑤ always quotes the attribute value, and in some cases, such as the attribute value itself contains double quotes, you must use single quotation marks, for example:
Name= ' Bill ' HelloWorld ' Gates '
HTML Learning Document-4, HTML properties
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