[giow] (2) Define setting valueAsNumber to Infinity or NaN.

Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=20496
Affected topics: DOM APIs

git-svn-id: http://svn.whatwg.org/webapps@7723 340c8d12-0b0e-0410-8428-c7bf67bfef74

complete.html

@@ -49795,6 +49795,7 @@ <h6 id=the-placeholder-attribute><span class=secno>4.10.7.3.10 </span>The <code
 
 
 <!--TOPIC:DOM APIs-->
+<!--CLEANUP-->
   <h5 id=common-input-element-apis><span class=secno>4.10.7.4 </span>Common <code><a href=#the-input-element>input</a></code> element APIs</h5>
 
   <dl class=domintro><dt><var title="">input</var> . <code title=dom-input-value><a href=#dom-input-value>value</a></code> [ = <var title="">value</var> ]</dt>
@@ -49856,7 +49857,8 @@ <h5 id=common-input-element-apis><span class=secno>4.10.7.4 </span>Common <code>
     <p>Returns a number representing the form control's <a href=#concept-fe-value title=concept-fe-value>value</a>, if applicable; otherwise,
     returns NaN.</p>
 
-    <p>Can be set, to change the value.</p>
+    <p>Can be set, to change the value. Setting this to NaN will set the underlying value to the
+    empty string.</p>
 
     <p>Throws an <code><a href=#invalidstateerror>InvalidStateError</a></code> exception if the
     control is neither date- or time-based nor numeric.</p>
@@ -49888,6 +49890,7 @@ <h5 id=common-input-element-apis><span class=secno>4.10.7.4 </span>Common <code>
    </dd>
 
   </dl><div class=impl>
+<!--CLEANUP-->
 
   <p>The <dfn id=dom-input-value title=dom-input-value><code>value</code></dfn> IDL
   attribute allows scripts to manipulate the <a href=#concept-fe-value title=concept-fe-value>value</a> of an <code><a href=#the-input-element>input</a></code>
@@ -49984,7 +49987,7 @@ <h5 id=common-input-element-apis><span class=secno>4.10.7.4 </span>Common <code>
   time value, then set the <a href=#concept-fe-value title=concept-fe-value>value</a>
   of the element to the empty string; otherwise, run the <a href=#concept-input-value-date-string title=concept-input-value-date-string>algorithm to convert a
   <code>Date</code> object to a string</a>, as defined for that
-  state, on the new value, and set the <a href=#concept-fe-value title=concept-fe-value>value</a> of the element to resulting
+  state, on the new value, and set the <a href=#concept-fe-value title=concept-fe-value>value</a> of the element to the resulting
   string.</p>
 
   <hr><p>The <dfn id=dom-input-valueasnumber title=dom-input-valueAsNumber><code>valueAsNumber</code></dfn> IDL
@@ -50005,18 +50008,19 @@ <h5 id=common-input-element-apis><span class=secno>4.10.7.4 </span>Common <code>
   returned a number, then return it, otherwise, return a Not-a-Number
   (NaN) value.</p>
 
-  <p>On setting, if the <code title=dom-input-valueAsNumber><a href=#dom-input-valueasnumber>valueAsNumber</a></code> attribute does
+  <p>On setting, if the new value is infinite, then throw a <code>TypeError</code> exception. Otherwise, if the <code title=dom-input-valueAsNumber><a href=#dom-input-valueasnumber>valueAsNumber</a></code> attribute does
   not apply, as defined for the <code><a href=#the-input-element>input</a></code> element's <code title=attr-input-type><a href=#attr-input-type>type</a></code> attribute's current state, then
-  throw an <code><a href=#invalidstateerror>InvalidStateError</a></code> exception. Otherwise, if
+  throw an <code><a href=#invalidstateerror>InvalidStateError</a></code> exception. Otherwise, if the new value is a Not-a-Number (NaN) value,
+  then set the <a href=#concept-fe-value title=concept-fe-value>value</a> of the element to the empty string. Otherwise, if
   the <code title=dom-input-valueAsDate><a href=#dom-input-valueasdate>valueAs<em>Date</em></a></code>
   attribute applies, run the <a href=#concept-input-value-date-string title=concept-input-value-date-string>algorithm to convert a
   <code>Date</code> object to a string</a> defined for that state,
   passing it a <code>Date</code> object whose <i>time value</i> is the
   new value, and set the <a href=#concept-fe-value title=concept-fe-value>value</a>
-  of the element to resulting string. Otherwise, run the <a href=#concept-input-value-number-string title=concept-input-value-number-string>algorithm to convert a
+  of the element to the resulting string. Otherwise, run the <a href=#concept-input-value-number-string title=concept-input-value-number-string>algorithm to convert a
   number to a string</a>, as defined for that state, on the new
   value, and set the <a href=#concept-fe-value title=concept-fe-value>value</a> of
-  the element to resulting string.</p>
+  the element to the resulting string.</p>
 
   <hr><p>The <dfn id=dom-input-stepdown title=dom-input-stepDown><code>stepDown(<var title="">n</var>)</code></dfn> and <dfn id=dom-input-stepup title=dom-input-stepUp><code>stepUp(<var title="">n</var>)</code></dfn> methods, when invoked, must run the
   following algorithm:</p>

index

@@ -49795,6 +49795,7 @@ You cannot submit this form when the field is incorrect.</samp></pre>
 
 
 <!--TOPIC:DOM APIs-->
+<!--CLEANUP-->
   <h5 id=common-input-element-apis><span class=secno>4.10.7.4 </span>Common <code><a href=#the-input-element>input</a></code> element APIs</h5>
 
   <dl class=domintro><dt><var title="">input</var> . <code title=dom-input-value><a href=#dom-input-value>value</a></code> [ = <var title="">value</var> ]</dt>
@@ -49856,7 +49857,8 @@ You cannot submit this form when the field is incorrect.</samp></pre>
     <p>Returns a number representing the form control's <a href=#concept-fe-value title=concept-fe-value>value</a>, if applicable; otherwise,
     returns NaN.</p>
 
-    <p>Can be set, to change the value.</p>
+    <p>Can be set, to change the value. Setting this to NaN will set the underlying value to the
+    empty string.</p>
 
     <p>Throws an <code><a href=#invalidstateerror>InvalidStateError</a></code> exception if the
     control is neither date- or time-based nor numeric.</p>
@@ -49888,6 +49890,7 @@ You cannot submit this form when the field is incorrect.</samp></pre>
    </dd>
 
   </dl><div class=impl>
+<!--CLEANUP-->
 
   <p>The <dfn id=dom-input-value title=dom-input-value><code>value</code></dfn> IDL
   attribute allows scripts to manipulate the <a href=#concept-fe-value title=concept-fe-value>value</a> of an <code><a href=#the-input-element>input</a></code>
@@ -49984,7 +49987,7 @@ You cannot submit this form when the field is incorrect.</samp></pre>
   time value, then set the <a href=#concept-fe-value title=concept-fe-value>value</a>
   of the element to the empty string; otherwise, run the <a href=#concept-input-value-date-string title=concept-input-value-date-string>algorithm to convert a
   <code>Date</code> object to a string</a>, as defined for that
-  state, on the new value, and set the <a href=#concept-fe-value title=concept-fe-value>value</a> of the element to resulting
+  state, on the new value, and set the <a href=#concept-fe-value title=concept-fe-value>value</a> of the element to the resulting
   string.</p>
 
   <hr><p>The <dfn id=dom-input-valueasnumber title=dom-input-valueAsNumber><code>valueAsNumber</code></dfn> IDL
@@ -50005,18 +50008,19 @@ You cannot submit this form when the field is incorrect.</samp></pre>
   returned a number, then return it, otherwise, return a Not-a-Number
   (NaN) value.</p>
 
-  <p>On setting, if the <code title=dom-input-valueAsNumber><a href=#dom-input-valueasnumber>valueAsNumber</a></code> attribute does
+  <p>On setting, if the new value is infinite, then throw a <code>TypeError</code> exception. Otherwise, if the <code title=dom-input-valueAsNumber><a href=#dom-input-valueasnumber>valueAsNumber</a></code> attribute does
   not apply, as defined for the <code><a href=#the-input-element>input</a></code> element's <code title=attr-input-type><a href=#attr-input-type>type</a></code> attribute's current state, then
-  throw an <code><a href=#invalidstateerror>InvalidStateError</a></code> exception. Otherwise, if
+  throw an <code><a href=#invalidstateerror>InvalidStateError</a></code> exception. Otherwise, if the new value is a Not-a-Number (NaN) value,
+  then set the <a href=#concept-fe-value title=concept-fe-value>value</a> of the element to the empty string. Otherwise, if
   the <code title=dom-input-valueAsDate><a href=#dom-input-valueasdate>valueAs<em>Date</em></a></code>
   attribute applies, run the <a href=#concept-input-value-date-string title=concept-input-value-date-string>algorithm to convert a
   <code>Date</code> object to a string</a> defined for that state,
   passing it a <code>Date</code> object whose <i>time value</i> is the
   new value, and set the <a href=#concept-fe-value title=concept-fe-value>value</a>
-  of the element to resulting string. Otherwise, run the <a href=#concept-input-value-number-string title=concept-input-value-number-string>algorithm to convert a
+  of the element to the resulting string. Otherwise, run the <a href=#concept-input-value-number-string title=concept-input-value-number-string>algorithm to convert a
   number to a string</a>, as defined for that state, on the new
   value, and set the <a href=#concept-fe-value title=concept-fe-value>value</a> of
-  the element to resulting string.</p>
+  the element to the resulting string.</p>
 
   <hr><p>The <dfn id=dom-input-stepdown title=dom-input-stepDown><code>stepDown(<var title="">n</var>)</code></dfn> and <dfn id=dom-input-stepup title=dom-input-stepUp><code>stepUp(<var title="">n</var>)</code></dfn> methods, when invoked, must run the
   following algorithm:</p>

source

@@ -57974,6 +57974,7 @@ You cannot submit this form when the field is incorrect.</samp></pre>
 
 
 <!--TOPIC:DOM APIs-->
+<!--CLEANUP-->
   <h5>Common <code>input</code> element APIs</h5>
 
   <dl class="domintro">
@@ -58041,7 +58042,8 @@ You cannot submit this form when the field is incorrect.</samp></pre>
     title="concept-fe-value">value</span>, if applicable; otherwise,
     returns NaN.</p>
 
-    <p>Can be set, to change the value.</p>
+    <p>Can be set, to change the value. Setting this to NaN will set the underlying value to the
+    empty string.</p>
 
     <p>Throws an <code>InvalidStateError</code> exception if the
     control is neither date- or time-based nor numeric.</p>
@@ -58077,6 +58079,7 @@ You cannot submit this form when the field is incorrect.</samp></pre>
   </dl>
 
   <div class="impl">
+<!--CLEANUP-->
 
   <p>The <dfn title="dom-input-value"><code>value</code></dfn> IDL
   attribute allows scripts to manipulate the <span
@@ -58208,7 +58211,7 @@ You cannot submit this form when the field is incorrect.</samp></pre>
   title="concept-input-value-date-string">algorithm to convert a
   <code>Date</code> object to a string</span>, as defined for that
   state, on the new value, and set the <span
-  title="concept-fe-value">value</span> of the element to resulting
+  title="concept-fe-value">value</span> of the element to the resulting
   string.</p>
 
   <hr>
@@ -58237,23 +58240,24 @@ You cannot submit this form when the field is incorrect.</samp></pre>
   returned a number, then return it, otherwise, return a Not-a-Number
   (NaN) value.</p>
 
-  <p>On setting, if the <code
+  <p>On setting, if the new value is infinite, then throw a <code>TypeError</code> exception. Otherwise, if the <code
   title="dom-input-valueAsNumber">valueAsNumber</code> attribute does
   not apply, as defined for the <code>input</code> element's <code
   title="attr-input-type">type</code> attribute's current state, then
-  throw an <code>InvalidStateError</code> exception. Otherwise, if
+  throw an <code>InvalidStateError</code> exception. Otherwise, if the new value is a Not-a-Number (NaN) value,
+  then set the <span title="concept-fe-value">value</span> of the element to the empty string. Otherwise, if
   the <code
   title="dom-input-valueAsDate">valueAs<em>Date</em></code>
   attribute applies, run the <span
   title="concept-input-value-date-string">algorithm to convert a
   <code>Date</code> object to a string</span> defined for that state,
   passing it a <code>Date</code> object whose <i>time value</i> is the
   new value, and set the <span title="concept-fe-value">value</span>
-  of the element to resulting string. Otherwise, run the <span
+  of the element to the resulting string. Otherwise, run the <span
   title="concept-input-value-number-string">algorithm to convert a
   number to a string</span>, as defined for that state, on the new
   value, and set the <span title="concept-fe-value">value</span> of
-  the element to resulting string.</p>
+  the element to the resulting string.</p>
 
   <hr>