Редактирование кода:
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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 name="x" for="a b"></output> </form> <p><strong>Note:</strong> The output tag is not supported in Edge/Internet Explorer.</p> </body> </html>