The meter element shows a value displayed in the context of the range of possible values.
It has local attributes: value, min, max, low, high, optimum, form .
The min and max attributes set the bounds for the range of possible values. These can be expressed using floating-point numbers.
The display for the meter element can be broken into three segments: too low, too high, and just right.
The low attribute sets the value under which a value is considered to be too low.
The high attribute sets the value over which a value is considered to be too high.
The optimum attribute specifies the "just right" value.
<!DOCTYPE HTML> <html> <body> <meter id="mymeter" value="90" min="10" max="100" low="40" high="80" optimum="60"></meter> <p> <button type="button" value="30">30</button> <button type="button" value="60">60</button> <button type="button" value="90">90</button> </p> <script> var buttons = document.getElementsByTagName('BUTTON'); var meter = document.getElementById('mymeter'); for (var i = 0; i < buttons.length; i++) { buttons[i].onclick = function(e) { meter.value = e.target.value; }; } </script> </body> </html>