Web Front-endCSS TutorialIntroduction to the behavior attribute in CSS and its use with examplesIntroduction to the behavior attribute in CSS and its use with examples
Are you familiar with the syntax of behavior attribute in CSS? Here is a brief description for you. When laying out CSS web pages, we often encounter situations where we need to refresh the content in the form. Behavior in CSS is very useful for us. Ok solved the problem.
This article will focus on the use of behavior attribute syntax in CSS. When laying out CSS web pages, we often encounter situations where we need to retain the content in the form when refreshing. It is customary to use cookies, but in that way It’s really troublesome. Behavior in CSS solves this problem very well for us.
CSS attribute behavior syntax
When we are laying out CSS web pages, when we need to refresh the content of the form, we are accustomed to using cookies, but it is really troublesome to do so. , behavior in css solves this problem very well for us. Today I will introduce to you the syntax of CSS attribute behavior.
behavior attribute syntax:
behavior:url(url)|url(#objID)|url(#default#behaviorName)
Value:
url(url): Use absolute or relative url address to specify DHTML behavior component (.htc)
url(#objID): Use binary implementation (as an ActiveX® control) of the behavior. #objID here is the id attribute value of the object object
url(#default#behaviorName): The default behavior of IE. Specified by the behavior's name identifier (#behaviorName)
Description: Sets or retrieves the DHTML behavior of the object. Separate multiple actions with spaces.
When multiple behaviors attached to the same feature conflict, the outcome depends on the order in which the behaviors are applied to the features. The latter action takes precedence over the previous action. The same rules apply to name conflicts between properties, events, and methods provided by different behaviors.
You can use the addBehavior method to dynamically attach behaviors to objects.
This property is read-only for the currentStyle object. For other objects can be read and written.
It is important to note that behaviors defined inline using the behavior attribute of a style sheet (CSS) or attached using the addBehavior method will not be automatically detached when the object is removed from the document tree. Behavior defined by style sheet rules in a document is automatically detached when the object is removed from the document tree.
Calling script
ExampleSourceCode
<html>
<head> <style>
h1{behavior:url(behave.htc)} </style>
</head> <body> <h1 id="把鼠标放在这里-css-com">把鼠标放在这里52css.com</h1>
</body> </html> behave.htc <component>
<attachforattachfor="element"event="onmouseover"handler="hig_lite"/> <attachforattachfor="element"event="onmouseout"handler="low_lite"/>
<scripttypescripttype="text/javascript"> functionhig_lite() { element.style.color=255 } functionlow_lite() { element.style.color=0 }
</script> </component> Note: Try to avoid using Behaviors technology when using CSS
InternetExplorerBehaviors
What is it ? Internet Explorer 5 introduced behaviors (behaviors). Behaviors are a way to add behaviors to HTML elements using CSS.
Why should you avoid it? Only Internet Explorer supports the behavior attribute.
What to use instead? Please use JavaScript and HTMLDOM instead
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