HTMLMetaElement: scheme property

Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see thecompatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

TheHTMLMetaElement.scheme property defines the scheme of the value in theHTMLMetaElement.content attribute.Thescheme property was created to enable providing additional information to be used to interpret the value of thecontent property. Thescheme property takes as its value a scheme format (i.e.,YYYY-MM-DD) or scheme format name (i.e.,ISBN), or a URI providing more information regarding the scheme format. The scheme defines the format of the value of thecontent attribute.Thescheme content is interpreted as an extension of the element'sHTMLMetaElement.name if a browser or user agent recognizes the scheme.

This property is deprecated and should not be used on new web pages.

Value

A string.

Examples

The following example queries a<meta> element that contains aname attribute with the value ofidentifier.Thescheme value is logged to the console to display the scheme of the metadata content:

// given <meta name="identifier" content="1580081754" scheme="ISBN">const meta = document.querySelector("meta[name='identifier']");console.log(meta.scheme);// "ISBN"