<form> <div> <input id="rangeInput" type="range" min="0" max="200" oninput="amount.value=rangeInput.value" /> <input id="amount" type="number" value="100" min="0" max="200" oninput="rangeInput.value=amount.value" /> </div> </form>
<input type="range" id="rangeInput" name="rangeInput" min="0" max="20" value="0" oninput="amount.value=rangeInput.value"> <output id="amount" name="amount" for="rangeInput">0</output>
function updateTextInput(val) { document.getElementById('textInput').value=val; }