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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /html/semantics/forms/the-input-element/input-valueasnumber-nan.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<meta charset="utf-8" />
<html>
<head>
<title>HTMLInputElement valueAsDate</title>
<link
rel="help"
/>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<h3>input_valueAsNumber</h3>
<hr />
<div id="log"></div>
<input id="input" type="number" />
<script>
"use strict";
const numberInput = document.getElementById("input");
test(() => {
assert_equals(
numberInput.value,
"",
"value is empty string by default"
);
assert_equals(
Number.isNaN(numberInput.valueAsNumber),
true,
"valueAsNumber is NaN by default"
);
numberInput.value = "12";
assert_equals(
numberInput.value,
"12",
"value gets set correctly when set by value"
);
assert_equals(
numberInput.valueAsNumber,
12,
"valueAsNumber gets set correctly when set by value"
);
numberInput.valueAsNumber = "15";
assert_equals(
numberInput.value,
"15",
"value gets set correctly when set by valueAsNumber"
);
assert_equals(
numberInput.valueAsNumber,
15,
"valueAsNumber gets set correctly when set by valueAsNumber"
);
numberInput.valueAsNumber = NaN;
assert_equals(
numberInput.value,
"",
"value gets set correctly when valueAsNumber is set to NaN"
);
assert_equals(
Number.isNaN(numberInput.valueAsNumber),
true,
"valueAsNumber gets set correctly when valueAsNumber is set to NaN"
);
}, "value and valueAsNumber are setting each other correctly for input[type=number]");
</script>
</body>
</html>