Can I set 'max' value in
<input type="number" step="10" min="10"
th:max=""
th:field="*{coins}" required>
with variable created in ?
<script>
var wallet = [[${session.student.wallet}]];
var price = [[${item.itemCost}]];
var lowerValue = Math.min(wallet, price);
</script>
The problem is to assign to 'max' the smaller of the values visible in .
If you give your input an id
attribute like (<input id="my-input"...), then it should be as simple as:
document.getElementById("my-input").setAttribute("max", myCalculatedValue)
;
let wallet = 50.00, price = 42.00; const myCalculatedValue = Math.min(wallet, price); const myInput = document.getElementById("my-input"); myInput.setAttribute("max", myCalculatedValue);
<input id="my-input" type="number" step="10" min="10" />
//default the max to 99 document.getElementById("yourinput").max = 99; // setMax gets triggered by the button's `onclick` attribute function setMax() { let max = document.getElementById("yourmax").value; document.getElementById("yourinput").max = max; }
<!-- Note that I gave your elements IDs so JS can reference them --> Default <b>max=99</b> got set when page loaded. Try it below.<br/> Set max here: <input id="yourmax" value="10"><br/> Click this button to apply your NEW max: <button onclick="setMax()">Set Max</button></br> Max gets set on this input: <input id="yourinput" type="number" min="0" style="width:50px;">
You can do this with just Thymeleaf.
<input type="number"
step="10" min="10"
th:max="${T(Math).max(session.student.wallet, item.itemCost)}"
th:field="*{coins}"
required>
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