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Bug 244558

Summary: Misleading error message for <input type="number" pattern="">
Product: web Reporter: _ gtzabari <gtzabari>
Component: HTML EditorAssignee: Milutin Kristofic <mkristofic>
Status: NEW ---    
Severity: normal    
Priority: P3    
Version: 8.0   
Hardware: PC   
OS: Windows 7   
Issue Type: ENHANCEMENT Exception Reporter: 33.33

Description _ gtzabari 2014-05-17 02:59:47 UTC 
Product Version: NetBeans IDE 8.0 (Build 201403101706)
Updates: NetBeans IDE is updated to version NetBeans 8.0 Patch 1.1
Java: 1.8.0; Java HotSpot(TM) 64-Bit Server VM 25.0-b70
Runtime: Java(TM) SE Runtime Environment 1.8.0-b132
System: Windows 7 version 6.1 running on amd64; Cp1252; en_CA (nb)
User directory: C:\Users\Gili\AppData\Roaming\NetBeans\8.0
Cache directory: C:\Users\Gili\AppData\Local\NetBeans\Cache\8.0

Netbeans flags "pattern" as an illegal attribute, but according to http://www.w3.org/TR/html51/forms.html#the-pattern-attribute <input pattern=""> is legal.
Comment 1 _ gtzabari 2014-05-17 03:14:26 UTC 
It turns out that Netbeans support <input pattern=""> but the error message is misleading. Given:

  <input id="price" type="number" placeholder="Price" pattern="^\\$?(([1-9](\\d*|\\d{0,2}(,\\d{3})*))|0)(\\.\\d{1,2})?$">

Netbeans warns:

  Attribute "pattern" not allowed on element "input" at this point.

Expected behavior: The warning should explain that attribute "pattern" is not allowed because attribute "type" is already present.
Comment 2 AndreasBuck 2015-05-26 00:34:43 UTC 
My understanding is that both tags should be allowed together. Or even are necessary to be together:
"Note: The pattern attribute works with the following input types: text, search, url, tel, email, and password"
http://www.w3schools.com/tags/att_input_pattern.asp
As additional types can be defined, the error might just be too restrictively looking for a combination of "pattern" with one of the listed types. Which does not include "number".