attr-px-invalid-cast

Attributes references (pixels)

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Assertion
When the value of the referenced attribute is not a pixel value, the fallback value is used instead.

Source

 1 <!DOCTYPE html>
 2 <html><head>
 3 	<meta charset="utf-8">
 4 	<title>
 5 		CSS Values and Units Test:
 6 		Attributes references (pixels)
 7 	</title>
 8 	<meta content="
 9 		When the value of the referenced attribute is not a pixel value, the fallback value is used instead.
10 	" name="assert">
11 
12 	<link href="mailto:fremycompany.developer@yahoo.fr" rel="author" title="François REMY">
13 
14 	<link href="http://www.w3.org/TR/css3-values/#attr-notation" rel="help">
15 
16 	<link href="reference/200-200-green.htm" rel="match">
17 
18 	<style type="text/css">
19 
20 			html, body { margin: 0px; padding: 0px; }
21 
22 			html { background: white; overflow: hidden; }
23 			#outer { position: relative; background: green; }
24 
25 			#outer { width: attr(data-test px, 200); height: 200px; }
26 
27 	</style>
28 
29 </head>
30 <body>
31 
32 	<div data-test="300px" id="outer"></div>
33 
34 
35 
36 </body></html>