When type="number", HTMLInputElement.value uses strict parsing & doesn't clamp (#4593)
Per https://html.spec.whatwg.org/multipage/#number-state-(type=number):dom-input-value-2
HTMLInputElement.value uses the "value" mode when the <input> is of type="number".
Per https://html.spec.whatwg.org/multipage/#dom-input-value-value
> On setting, it must set the element's value to the new value, [...],
> invoke the *value sanitization algorithm*, [...]
Per https://html.spec.whatwg.org/multipage/#number-state-(type=number):value-sanitization-algorithm
> The value sanitization algorithm is as follows:
> If the value of the element is not a *valid floating-point number*,
> then set it to the empty string instead.
Per https://html.spec.whatwg.org/multipage/#valid-floating-point-number
the grammar for *valid floating-point number* does not allow:
* Trailing gibberish
* Leading plus signs
* Leading whitespace
So the 3 related tests' values are invalid and should get sanitized to the empty string.
And neither the *value sanitization algorithm* nor AFAICT any prose in
https://html.spec.whatwg.org/multipage/#number-state-(type=number)
requires number string values to get clamped/rounded
like the 2^53+1 test seems to expect.
diff --git a/html/semantics/forms/the-input-element/number.html b/html/semantics/forms/the-input-element/number.html
index d22faa5..64868f0 100644
--- a/html/semantics/forms/the-input-element/number.html
+++ b/html/semantics/forms/the-input-element/number.html
@@ -29,14 +29,14 @@
{value: "Infinity", expected: "", testname: " value = Infinity"},
{value: "-Infinity", expected: "", testname: "value = -Infinity"},
{value: "NaN", expected: "", testname: "value = NaN"},
- {value: "9007199254740993", expected: "9007199254740992", testname: "value = 2^53+1"},
+ {value: "9007199254740993", expected: "9007199254740993", testname: "value = 2^53+1"},
{value: "2e308", expected: "", testname: "value >= Number.MAX_VALUE"},
{value: "1e", expected: "", testname: "value = 1e"},
- {value: "+1", expected: "1", testname: "value = +1"},
+ {value: "+1", expected: "", testname: "value = +1"},
{value: "+", expected: "", testname: "value = '+'"},
{value: "-", expected: "", testname: "value = '-'"},
- {value: " 1", expected: "1", testname: "value with a leading whitespace"},
- {value: "1trailing junk", expected: "1", testname: "value = 1trailing junk"}
+ {value: " 1", expected: "", testname: "value with a leading whitespace"},
+ {value: "1trailing junk", expected: "", testname: "value = 1trailing junk"}
];
for (var i = 0; i < numbers.length; i++) {
var w = numbers[i];
