[Webkit-unassigned] [Bug 67233] New: Setting value on a select element to a non existing option value should clear selection

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=67233

           Summary: Setting value on a select element to a non existing
                    option value should clear selection
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
               URL: http://www.whatwg.org/specs/web-apps/current-work/#dom
                    -select-value
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Forms
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: arv at chromium.org
                CC: rafaelw at chromium.org


Given:

<select>
  <option value="a">A</option>
  <option value="b">B</option>
</select>

<script>
var sel = document.querySelector('select');
sel.value = 'x'
assert(sel.selectedIndex === -1)
</script>

The spec says: "On setting, the value attribute must set the selectedness of all the option elements in the list of options to false, and then the first option element in the list of options, in tree order, whose value is equal to the given new value, if any, must have its selectedness set to true."

This means that we should unselect all and then select first option that matches the value.

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