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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /html/semantics/forms/the-textarea-element/textarea-maxlength.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<html>
<head>
<title>textarea maxlength</title>
<link rel="author" title="tigercosmos" href="mailto:phy.tiger@gmail.com">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<textarea id="none"></textarea>
<textarea id="negative" maxlength="-5"></textarea>
<textarea id="non-numeric" maxlength="not-a-number"></textarea>
<textarea id="assign-negative"></textarea>
<textarea id="assign-non-numeric"></textarea>
<script>
test(
function () {
assert_equals(document.getElementById("none").maxLength, -1);
}, "Unset maxlength is -1");
test(
function () {
assert_equals(document.getElementById("negative").maxLength, -1);
}, "Negative maxlength is always -1");
test(
function () {
assert_equals(document.getElementById("non-numeric").maxLength, -1);
}, "Non-numeric maxlength is -1");
test(
function () {
assert_throws_dom("INDEX_SIZE_ERR", function () {
document.getElementById("assign-negative").maxLength = -5;
});
}, "Assigning negative integer throws IndexSizeError");
test(
function () {
document.getElementById("assign-non-numeric").maxLength = "not-a-number";
assert_equals(document.getElementById("assign-non-numeric").maxLength, 0);
}, "Assigning non-numeric to maxlength sets maxlength to 0");
</script>
</body>
</html>