The SVGTests interface is used to reflect conditional processing attributes and is mixed into other interfaces for elements that support these attributes.
SVGTests.requiredFeatures Read only  
SVGStringList corresponding to the requiredFeatures attribute of the given element.SVGTests.requiredExtensions Read only 
SVGStringList corresponding to the requiredExtensions attribute of the given element.SVGTests.systemLanguage Read only 
SVGStringList corresponding to the systemLanguage attribute of the given element.SVGTests.hasExtension() Read only  
true if the browser supports the given extension, specified by a URI.| Specification | Status | Comment | 
|---|---|---|
| Scalable Vector Graphics (SVG) 2 The definition of 'SVGTests' in that specification.  |  Candidate Recommendation | Removed requiredFeatures property and hasExtension() method. |  
| Scalable Vector Graphics (SVG) 1.1 (Second Edition) The definition of 'SVGTests' in that specification.  |  Recommendation | Initial definition | 
| Desktop | ||||||
|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
| Basic support | Yes | Yes | 12 | 9 | ? | ? | 
hasextension 
 | 
? — 47
  | 
? | ? | ? | ? | ? | 
requiredFeatures 
 | 
? — 59
  | 
? | ? | ? | ? | ? | 
| Mobile | |||||||
|---|---|---|---|---|---|---|---|
| Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | Yes | Yes | Yes | ? | ? | ? | ? | 
hasextension 
 | 
? — 47
  | 
? — 47
  | 
? | ? | ? | ? | ? | 
requiredFeatures 
 | 
? — 59
  | 
? — 59
  | 
? | ? | ? | ? | ? | 
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
    https://developer.mozilla.org/en-US/docs/Web/API/SVGTests