required />
 
min="2010-08-14" max="2011-08-14" value="2010-08-14"/> 
min="0" max="50" value="10" /> 
results="10" placeholder="Search..." /> 
pattern="^\(?\d{3}\)?[-\s]\d{3}[-\s]\d{4}.*?$" />

placeholder="e.g. #bbbbbb" /> 
step="1" min="-5" max="10" value="0" /> 

Others:

<meter min="0" max="100" low="40" high="90" optimum="100" value="91">A+meter>
Your score is: A+
<progress>working...progress>
Download is: working...
<progress value="75" max="100">3/4 completeprogress>
Goal is: 3/4 complete
<output>