当前位置： 文江博客 知识库 en-US 文档 Web SVG Attribute requiredFeatures

requiredFeatures - SVG: Scalable Vector Graphics 编辑

Deprecated since SVG 2

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 the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

The requiredFeatures attribute takes a list of feature strings, with the individual strings separated by white space. It determines whether or not all of the named features are supported by the browser; if all of them are supported, the attribute evaluates to true end the element is rendered; otherwise, the attribute evaluates to false and the current element and its children are skipped and thus will not be rendered. This provides a way to design SVG that gracefully falls back when features aren't available.

If the attribute is not present, then its implicit evaluated value is true. If a null string or empty string value is given to attribute requiredFeatures, the attribute is evaluate to false.

requiredFeatures is often used in conjunction with the <switch> element. If requiredFeatures is used in other situations, it represents a simple switch on the given element whether to render the element or not.

To detect availability of an SVG feature from script, there is the (also deprecated) DOMImplementation.hasFeature() method.

Twentynine elements are using this attribute: <a>, <altGlyph>, <animate>, <animateColor>, <animateMotion>, <animateTransform>, <circle>, <clipPath>, <cursor>, <defs>, <ellipse>, <foreignObject>, <g>, <image>, <line>, <mask>, <path>, <pattern>, <polygon>, <polyline>, <rect>, <set>, <svg>, <switch>, <text>, <textPath>, <tref>, <tspan>, <use>

html, body, svg {
  height: 100%;
}

text {
  fill: white;
}

<svg viewBox="0 0 250 45" xmlns="http://www.w3.org/2000/svg">
  <g>
    <rect fill="forestgreen" x="10" y="10" height="25" width="230" />
    <text x="20" y="27">requiredFeatures supported</text>
  </g>
  <g requiredFeatures="">
    <rect fill="crimson" x="10" y="10" height="25" width="230" />
    <text x="20" y="27">requiredFeatures not supported</text>
  </g>
</svg>

Usage notes

Value<list-of-features>
Default valuetrue if not defined, false if null or empty string as value
AnimatableNo
<list-of-features>
This is a list of feature strings, separated using white space. Determines whether all of the named features are supported by the browser. See Feature strings below for a list of allowed values.

Feature strings

The following are the feature strings for the requiredFeatures attribute. These same feature strings apply to the hasFeature method call that is part of the SVG DOM's support for the DOMImplementation interface. In some cases the feature strings map directly to a set of attributes, properties or elements, in others they represent some functionality of the browser. Note that the format and naming for feature strings changed from SVG 1.0 to SVG 1.1. The SVG 1.0 feature strings are not listed here but can be found in the SVG Specification. Some browser support SVG 1.0 Feature strings for compatibility reasons. However, the SVG 1.0 feature strings are considered deprecated.

http://www.w3.org/TR/SVG11/feature#SVG

At least one of the following feature is supported:

  • http://www.w3.org/TR/SVG11/feature#SVG-static
  • http://www.w3.org/TR/SVG11/feature#SVG-animation
  • http://www.w3.org/TR/SVG11/feature#SVG-dynamic
  • http://www.w3.org/TR/SVG11/feature#SVGDOM
http://www.w3.org/TR/SVG11/feature#SVGDOM

At least one of the following feature is supported:

  • http://www.w3.org/TR/SVG11/feature#SVGDOM-static
  • http://www.w3.org/TR/SVG11/feature#SVGDOM-animation
  • http://www.w3.org/TR/SVG11/feature#SVGDOM-dynamic
http://www.w3.org/TR/SVG11/feature#SVG-static

The browser supports all the following features:

  • http://www.w3.org/TR/SVG11/feature#CoreAttribute
  • http://www.w3.org/TR/SVG11/feature#Structure
  • http://www.w3.org/TR/SVG11/feature#ContainerAttribute
  • http://www.w3.org/TR/SVG11/feature#ConditionalProcessing
  • http://www.w3.org/TR/SVG11/feature#Image
  • http://www.w3.org/TR/SVG11/feature#Style
  • http://www.w3.org/TR/SVG11/feature#ViewportAttribute
  • http://www.w3.org/TR/SVG11/feature#Shape
  • http://www.w3.org/TR/SVG11/feature#Text
  • http://www.w3.org/TR/SVG11/feature#PaintAttribute
  • http://www.w3.org/TR/SVG11/feature#OpacityAttribute
  • http://www.w3.org/TR/SVG11/feature#GraphicsAttribute
  • http://www.w3.org/TR/SVG11/feature#Marker
  • http://www.w3.org/TR/SVG11/feature#ColorProfile
  • http://www.w3.org/TR/SVG11/feature#Gradient
  • http://www.w3.org/TR/SVG11/feature#Pattern
  • http://www.w3.org/TR/SVG11/feature#Clip
  • http://www.w3.org/TR/SVG11/feature#Mask
  • http://www.w3.org/TR/SVG11/feature#Filter
  • http://www.w3.org/TR/SVG11/feature#XlinkAttribute
  • http://www.w3.org/TR/SVG11/feature#Font
  • http://www.w3.org/TR/SVG11/feature#Extensibility
http://www.w3.org/TR/SVG11/feature#SVGDOM-static

The browser supports all of the DOM interfaces and methods that correspond to the language features for http://www.w3.org/TR/SVG11/feature#SVG-static.

http://www.w3.org/TR/SVG11/feature#SVG-animation

The browser supports all of the language features from http://www.w3.org/TR/SVG11/feature#SVG-static plus the feature http://www.w3.org/TR/SVG11/feature#Animation.

http://www.w3.org/TR/SVG11/feature#SVGDOM-animation

The browser supports all of the DOM interfaces and methods that correspond to the language features for http://www.w3.org/TR/SVG11/feature#SVG-animation.

http://www.w3.org/TR/SVG11/feature#SVG-dynamic

The browser supports all of the language features from http://www.w3.org/TR/SVG11/feature#SVG-animation plus the following features:

  • http://www.w3.org/TR/SVG11/feature#Hyperlinking
  • http://www.w3.org/TR/SVG11/feature#Scripting
  • http://www.w3.org/TR/SVG11/feature#View
  • http://www.w3.org/TR/SVG11/feature#Cursor
  • http://www.w3.org/TR/SVG11/feature#GraphicalEventsAttribute
  • http://www.w3.org/TR/SVG11/feature#DocumentEventsAttribute
  • http://www.w3.org/TR/SVG11/feature#AnimationEventsAttribute
http://www.w3.org/TR/SVG11/feature#SVGDOM-dynamic

The browser supports all of the DOM interfaces and methods that correspond to the language features for http://www.w3.org/TR/SVG11/feature#SVG-dynamic.

http://www.w3.org/TR/SVG11/feature#CoreAttribute

The browser supports the id, xml:base, xml:lang and xml:space attributes

http://www.w3.org/TR/SVG11/feature#Structure

The browser supports <svg>, <g>, <defs>, <desc>, <title>, <metadata>, <symbol> and <use> elements.

http://www.w3.org/TR/SVG11/feature#BasicStructure

The browser supports <svg>, <g>, <defs>, <desc>, <title>, <metadata> and <use> elements.

http://www.w3.org/TR/SVG11/feature#ContainerAttribute

The browser supports the enable-background attribute

http://www.w3.org/TR/SVG11/feature#ConditionalProcessing

The browser supports the <switch> element, and the requiredFeatures, requiredExtensions, systemLanguage attributes

http://www.w3.org/TR/SVG11/feature#Image

The browser supports the <image> element.

http://www.w3.org/TR/SVG11/feature#Style

The browser supports the <style> element.

http://www.w3.org/TR/SVG11/feature#ViewportAttribute

The browser supports the clip and overflow attributes.

http://www.w3.org/TR/SVG11/feature#Shape

The browser supports the <rect>, <circle>, <line>, <polyline>, <polygon>, <ellipse> and <path> elements.

http://www.w3.org/TR/SVG11/feature#Text

The browser supports the <text>, <tspan>, <tref>, <textPath>, <altGlyph>, <altGlyphDef>, <altGlyphItem> and <glyphRef> elements.

http://www.w3.org/TR/SVG11/feature#BasicText

The browser supports the <text> element

http://www.w3.org/TR/SVG11/feature#PaintAttribute

The browser supports the color, fill, fill-rule, stroke, stroke-dasharray, stroke-dashoffset, stroke-linecap, stroke-linejoin, stroke-miterlimit, stroke-width, color-interpolation and color-rendering attributes

http://www.w3.org/TR/SVG11/feature#BasicPaintAttribute

The browser supports the color, fill, fill-rule, stroke, stroke-dasharray, stroke-dashoffset, stroke-linecap, stroke-linejoin, stroke-miterlimit, stroke-width and color-rendering attributes

http://www.w3.org/TR/SVG11/feature#OpacityAttribute

The browser supports the opacity, stroke-opacity and fill-opacity attributes

http://www.w3.org/TR/SVG11/feature#GraphicsAttribute

The browser supports the display, image-rendering, pointer-events, shape-rendering, text-rendering and visibility attributes

http://www.w3.org/TR/SVG11/feature#BasicGraphicsAttribute

The browser supports the display and visibility attributes

http://www.w3.org/TR/SVG11/feature#Marker

The browser supports the <marker> element

http://www.w3.org/TR/SVG11/feature#ColorProfile

The browser supports the <color-profile> element

http://www.w3.org/TR/SVG11/feature#Gradient

The browser supports the <linearGradient>, <radialGradient> and <stop> elements

http://www.w3.org/TR/SVG11/feature#Pattern

The browser supports the <pattern> element

http://www.w3.org/TR/SVG11/feature#Clip

The browser supports the <clipPath> element and the clip-path, clip-rule attributes

http://www.w3.org/TR/SVG11/feature#BasicClip

The browser supports the <clipPath> element and the clip-path attribute

http://www.w3.org/TR/SVG11/feature#Mask

The browser supports the <mask> element

http://www.w3.org/TR/SVG11/feature#Filter

The browser supports the <filter>, <feBlend>, <feColorMatrix>, <feComponentTransfer>, <feComposite>, <feConvolveMatrix>, <feDiffuseLighting>, <feDisplacementMap>, <feFlood>, <feGaussianBlur>, <feImage>, <feMerge>, <feMergeNode>, <feMorphology>, <feOffset>, <feSpecularLighting>, <feTile>, <feDistantLight>, <fePointLight>, <feSpotLight>, <feFuncR>, <feFuncG>, <feFuncB> and <feFuncA> elements

http://www.w3.org/TR/SVG11/feature#BasicFilter

The browser supports the <filter>, <feBlend>, <feColorMatrix>, <feComponentTransfer>, <feComposite>, <feFlood>, <feGaussianBlur>, <feImage>, <feMerge>, <feMergeNode>, <feOffset>, <feTile>, <feFuncR>, <feFuncG>, <feFuncB> and <feFuncA> elements

http://www.w3.org/TR/SVG11/feature#DocumentEventsAttribute

The browser supports the onunload, onabort, onerror, onresize, onscroll and onzoom attributes

http://www.w3.org/TR/SVG11/feature#GraphicalEventsAttribute

The browser supports the onfocusin, onfocusout, onactivate, onclick, onmousedown, onmouseup, onmouseover, onmousemove, onmouseout and onload attributes

http://www.w3.org/TR/SVG11/feature#AnimationEventsAttribute

The browser supports the onbegin, onend, onrepeat and onload attributes

http://www.w3.org/TR/SVG11/feature#Cursor

The browser supports the <cursor> element

http://www.w3.org/TR/SVG11/feature#Hyperlinking

The browser supports the <a> element

http://www.w3.org/TR/SVG11/feature#XlinkAttribute

The browser supports the xlink:type, xlink:href, xlink:role, xlink:arcrole, xlink:title, xlink:show and xlink:actuate attributes

http://www.w3.org/TR/SVG11/feature#ExternalResourcesRequired

The browser supports the externalResourcesRequired attribute

http://www.w3.org/TR/SVG11/feature#View

The browser supports the <view> element

http://www.w3.org/TR/SVG11/feature#Script

The browser supports the <script> element

http://www.w3.org/TR/SVG11/feature#Animation

The browser supports the <animate>, <set>, <animateMotion>, <animateTransform>, <animateColor> and <mpath> elements

http://www.w3.org/TR/SVG11/feature#Font

The browser supports the <font>, <font-face>, <glyph>, <missing-glyph>, <hkern>, <vkern>, <font-face-src>, <font-face-uri>, <font-face-format> and <font-face-name> elements

http://www.w3.org/TR/SVG11/feature#BasicFont

The browser supports the <font>, <font-face>, <glyph>, <missing-glyph>, <hkern>, <font-face-src> and <font-face-name> elements

http://www.w3.org/TR/SVG11/feature#Extensibility

The browser supports the <foreignObject> element

Example

SVG

<svg width="450" height="1170" xmlns="http://www.w3.org/2000/svg">

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#SVG -->
	<rect class="ko" x="10" y="10" height="25" width="430" />
	<rect class="ok" x="10" y="10" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#SVG" />
	<text x="20" y="27">http://www.w3.org/TR/SVG11/feature#SVG</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#SVGDOM -->
	<rect class="ko" x="10" y="35" height="25" width="430" />
	<rect class="ok" x="10" y="35" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#SVGDOM" />
	<text x="20" y="52">http://www.w3.org/TR/SVG11/feature#SVGDOM</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#SVG-static -->
	<rect class="ko" x="10" y="60" height="25" width="430" />
	<rect class="ok" x="10" y="60" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#SVG-static" />
	<text x="20" y="77">http://www.w3.org/TR/SVG11/feature#SVG-static</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#SVGDOM-static -->
	<rect class="ko" x="10" y="85" height="25" width="430" />
	<rect class="ok" x="10" y="85" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#SVGDOM-static" />
	<text x="20" y="102">http://www.w3.org/TR/SVG11/feature#SVGDOM-static</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#SVG-animation -->
	<rect class="ko" x="10" y="110" height="25" width="430" />
	<rect class="ok" x="10" y="110" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#SVG-animation" />
	<text x="20" y="127">http://www.w3.org/TR/SVG11/feature#SVG-animation</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#SVGDOM-animation -->
	<rect class="ko" x="10" y="135" height="25" width="430" />
	<rect class="ok" x="10" y="135" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#SVGDOM-animation" />
	<text x="20" y="152">http://www.w3.org/TR/SVG11/feature#SVGDOM-animation</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#SVG-dynamic -->
	<rect class="ko" x="10" y="160" height="25" width="430" />
	<rect class="ok" x="10" y="160" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#SVG-dynamic" />
	<text x="20" y="177">http://www.w3.org/TR/SVG11/feature#SVG-dynamic</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#SVGDOM-dynamic -->
	<rect class="ko" x="10" y="185" height="25" width="430" />
	<rect class="ok" x="10" y="185" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#SVGDOM-dynamic" />
	<text x="20" y="202">http://www.w3.org/TR/SVG11/feature#SVGDOM-dynamic</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#CoreAttribute -->
	<rect class="ko" x="10" y="210" height="25" width="430" />
	<rect class="ok" x="10" y="210" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#CoreAttribute" />
	<text x="20" y="227">http://www.w3.org/TR/SVG11/feature#CoreAttribute</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#Structure -->
	<rect class="ko" x="10" y="235" height="25" width="430" />
	<rect class="ok" x="10" y="235" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#Structure" />
	<text x="20" y="252">http://www.w3.org/TR/SVG11/feature#Structure</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#BasicStructure -->
	<rect class="ko" x="10" y="260" height="25" width="430" />
	<rect class="ok" x="10" y="260" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#BasicStructure" />
	<text x="20" y="277">http://www.w3.org/TR/SVG11/feature#BasicStructure</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#ContainerAttribute -->
	<rect class="ko" x="10" y="285" height="25" width="430" />
	<rect class="ok" x="10" y="285" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#ContainerAttribute" />
	<text x="20" y="302">http://www.w3.org/TR/SVG11/feature#ContainerAttribute</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#ConditionalProcessing -->
	<rect class="ko" x="10" y="310" height="25" width="430" />
	<rect class="ok" x="10" y="310" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#ConditionalProcessing" />
	<text x="20" y="327">http://www.w3.org/TR/SVG11/feature#ConditionalProcessing</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#Image -->
	<rect class="ko" x="10" y="335" height="25" width="430" />
	<rect class="ok" x="10" y="335" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#Image" />
	<text x="20" y="352">http://www.w3.org/TR/SVG11/feature#Image</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#Style -->
	<rect class="ko" x="10" y="360" height="25" width="430" />
	<rect class="ok" x="10" y="360" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#Style" />
	<text x="20" y="377">http://www.w3.org/TR/SVG11/feature#Style</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#ViewportAttribute -->
	<rect class="ko" x="10" y="385" height="25" width="430" />
	<rect class="ok" x="10" y="385" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#ViewportAttribute" />
	<text x="20" y="402">http://www.w3.org/TR/SVG11/feature#ViewportAttribute</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#Shape -->
	<rect class="ko" x="10" y="410" height="25" width="430" />
	<rect class="ok" x="10" y="410" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#Shape" />
	<text x="20" y="427">http://www.w3.org/TR/SVG11/feature#Shape</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#Text -->
	<rect class="ko" x="10" y="435" height="25" width="430" />
	<rect class="ok" x="10" y="435" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#Text" />
	<text x="20" y="452">http://www.w3.org/TR/SVG11/feature#Text</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#BasicText -->
	<rect class="ko" x="10" y="460" height="25" width="430" />
	<rect class="ok" x="10" y="460" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#BasicText" />
	<text x="20" y="477">http://www.w3.org/TR/SVG11/feature#BasicText</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#PaintAttribute -->
	<rect class="ko" x="10" y="485" height="25" width="430" />
	<rect class="ok" x="10" y="485" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#PaintAttribute" />
	<text x="20" y="502">http://www.w3.org/TR/SVG11/feature#PaintAttribute</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#BasicPaintAttribute -->
	<rect class="ko" x="10" y="510" height="25" width="430" />
	<rect class="ok" x="10" y="510" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#BasicPaintAttribute" />
	<text x="20" y="527">http://www.w3.org/TR/SVG11/feature#BasicPaintAttribute</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#OpacityAttribute -->
	<rect class="ko" x="10" y="535" height="25" width="430" />
	<rect class="ok" x="10" y="535" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#OpacityAttribute" />
	<text x="20" y="552">http://www.w3.org/TR/SVG11/feature#OpacityAttribute</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#GraphicsAttribute -->
	<rect class="ko" x="10" y="560" height="25" width="430" />
	<rect class="ok" x="10" y="560" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#GraphicsAttribute" />
	<text x="20" y="577">http://www.w3.org/TR/SVG11/feature#GraphicsAttribute</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#BasicGraphicsAttribute -->
	<rect class="ko" x="10" y="585" height="25" width="430" />
	<rect class="ok" x="10" y="585" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#BasicGraphicsAttribute" />
	<text x="20" y="602">http://www.w3.org/TR/SVG11/feature#BasicGraphicsAttribute</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#Marker -->
	<rect class="ko" x="10" y="610" height="25" width="430" />
	<rect class="ok" x="10" y="610" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#Marker" />
	<text x="20" y="627">http://www.w3.org/TR/SVG11/feature#Marker</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#ColorProfile -->
	<rect class="ko" x="10" y="635" height="25" width="430" />
	<rect class="ok" x="10" y="635" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#ColorProfile" />
	<text x="20" y="652">http://www.w3.org/TR/SVG11/feature#ColorProfile</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#Gradient -->
	<rect class="ko" x="10" y="660" height="25" width="430" />
	<rect class="ok" x="10" y="660" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#Gradient" />
	<text x="20" y="677">http://www.w3.org/TR/SVG11/feature#Gradient</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#Pattern -->
	<rect class="ko" x="10" y="685" height="25" width="430" />
	<rect class="ok" x="10" y="685" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#Pattern" />
	<text x="20" y="702">http://www.w3.org/TR/SVG11/feature#Pattern</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#Clip -->
	<rect class="ko" x="10" y="710" height="25" width="430" />
	<rect class="ok" x="10" y="710" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#Clip" />
	<text x="20" y="727">http://www.w3.org/TR/SVG11/feature#Clip</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#BasicClip -->
	<rect class="ko" x="10" y="735" height="25" width="430" />
	<rect class="ok" x="10" y="735" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#BasicClip" />
	<text x="20" y="752">http://www.w3.org/TR/SVG11/feature#BasicClip</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#Mask -->
	<rect class="ko" x="10" y="760" height="25" width="430" />
	<rect class="ok" x="10" y="760" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#Mask" />
	<text x="20" y="777">http://www.w3.org/TR/SVG11/feature#Mask</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#Filter -->
	<rect class="ko" x="10" y="785" height="25" width="430" />
	<rect class="ok" x="10" y="785" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#Filter" />
	<text x="20" y="802">http://www.w3.org/TR/SVG11/feature#Filter</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#BasicFilter -->
	<rect class="ko" x="10" y="810" height="25" width="430" />
	<rect class="ok" x="10" y="810" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#BasicFilter" />
	<text x="20" y="827">http://www.w3.org/TR/SVG11/feature#BasicFilter</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#DocumentEventsAttribute -->
	<rect class="ko" x="10" y="835" height="25" width="430" />
	<rect class="ok" x="10" y="835" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#DocumentEventsAttribute" />
	<text x="20" y="852">http://www.w3.org/TR/SVG11/feature#DocumentEventsAttribute</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#GraphicalEventsAttribute -->
	<rect class="ko" x="10" y="860" height="25" width="430" />
	<rect class="ok" x="10" y="860" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#GraphicalEventsAttribute" />
	<text x="20" y="877">http://www.w3.org/TR/SVG11/feature#GraphicalEventsAttribute</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#AnimationEventsAttribute -->
	<rect class="ko" x="10" y="885" height="25" width="430" />
	<rect class="ok" x="10" y="885" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#AnimationEventsAttribute" />
	<text x="20" y="902">http://www.w3.org/TR/SVG11/feature#AnimationEventsAttribute</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#Cursor -->
	<rect class="ko" x="10" y="910" height="25" width="430" />
	<rect class="ok" x="10" y="910" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#Cursor" />
	<text x="20" y="927">http://www.w3.org/TR/SVG11/feature#Cursor</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#Hyperlinking -->
	<rect class="ko" x="10" y="935" height="25" width="430" />
	<rect class="ok" x="10" y="935" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#Hyperlinking" />
	<text x="20" y="952">http://www.w3.org/TR/SVG11/feature#Hyperlinking</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#XlinkAttribute -->
	<rect class="ko" x="10" y="960" height="25" width="430" />
	<rect class="ok" x="10" y="960" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#XlinkAttribute" />
	<text x="20" y="977">http://www.w3.org/TR/SVG11/feature#XlinkAttribute</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#ExternalResourcesRequired -->
	<rect class="ko" x="10" y="985" height="25" width="430" />
	<rect class="ok" x="10" y="985" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#ExternalResourcesRequired" />
	<text x="20" y="1002">http://www.w3.org/TR/SVG11/feature#ExternalResourcesRequired</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#View -->
	<rect class="ko" x="10" y="1010" height="25" width="430" />
	<rect class="ok" x="10" y="1010" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#View" />
	<text x="20" y="1027">http://www.w3.org/TR/SVG11/feature#View</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#Script -->
	<rect class="ko" x="10" y="1035" height="25" width="430" />
	<rect class="ok" x="10" y="1035" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#Script" />
	<text x="20" y="1052">http://www.w3.org/TR/SVG11/feature#Script</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#Animation -->
	<rect class="ko" x="10" y="1060" height="25" width="430" />
	<rect class="ok" x="10" y="1060" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#Animation" />
	<text x="20" y="1077">http://www.w3.org/TR/SVG11/feature#Animation</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#Font -->
	<rect class="ko" x="10" y="1085" height="25" width="430" />
	<rect class="ok" x="10" y="1085" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#Font" />
	<text x="20" y="1102">http://www.w3.org/TR/SVG11/feature#Font</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#BasicFont -->
	<rect class="ko" x="10" y="1110" height="25" width="430" />
	<rect class="ok" x="10" y="1110" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#BasicFont" />
	<text x="20" y="1127">http://www.w3.org/TR/SVG11/feature#BasicFont</text>

	<!-- Testing : http://www.w3.org/TR/SVG11/feature#Extensibility -->
	<rect class="ko" x="10" y="1135" height="25" width="430" />
	<rect class="ok" x="10" y="1135" height="25" width="430"
	      requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" />
	<text x="20" y="1152">http://www.w3.org/TR/SVG11/feature#Extensibility</text>
</svg>

CSS

.ko {
	fill: #900;
}

.ok {
	fill: #060;
}

rect {
  stroke: #000;
  stroke-width: 2px;
}

text{
  fill: #FFF;
  font: 12px sans-serif;
}

Result

See also requiredFeatures.svg

Specifications

SpecificationStatusComment
Scalable Vector Graphics (SVG) 1.1 (Second Edition)
The definition of 'requiredFeatures' in that specification.		RecommendationInitial definition

Browser compatibility

BCD tables only load in the browser

See also

如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

扫码二维码加入Web技术交流群

发布评论

需要 登录 才能够评论， 你可以免费 注册 一个本站的账号。
列表为空，暂无数据

词条统计

浏览：99 次

字数：57744

最后编辑：8年前

编辑次数：0 次

更多

友情链接

文江博客
    我们使用 Cookies 和其他技术来定制您的体验包括您的登录状态等。通过阅读我们的 隐私政策 了解更多相关信息。 单击 接受 或继续使用网站，即表示您同意使用 Cookies 和您的相关数据。
    原文