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<!DOCTYPE html> <html> <body> <form oninput="x.value=parseInt(a.value)+parseInt(b.value)">0 <input type="range" id="a" value="50">100 +<input type="number" id="b" value="50"> =<output id="myOutput" name="x" for="a b"></output> </form> <p>Click the button to set the result of the calculation above to "150".</p> <p><strong>Note:</strong> The output element is not supported in Internet Explorer.</p> <button type="button" onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { document.getElementById("myOutput").value = "150"; } </script> </body> </html>