1300282 - The Option constructor doesn't return expected option element

Status: NEW

(Core :: DOM: Core & HTML, defect, P3)

Description

[zbinlin]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0
Build ID: 20160830141501

Steps to reproduce:

User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0

test case:

```javascript
var opt = new Option("foo", 0, true);
console.log(opt.selected);
```


Actual results:

actual output:
true


Expected results:

expected output:
false

Comment 1

[:Ms2ger (he/him; ⌚ UTC+1/+2)]

Seems like there's a number of issues related to the handling of optional arguments here.

For example, in addition to the issue in comment 0, all these fail:

```
assert_equals((new Option(undefined, "value")).value, "value");
assert_true((new Option(undefined, undefined, true)).defaultSelected);
assert_true((new Option(undefined, undefined, undefined, true)).selected);
assert_false((new Option("")).hasChildNodes());
```

Comment 2

[Tom Puttemans]

Additionally, setting the optional argument defaultSelected to true in the constructor sets the selectedness to true as well, which goes against the spec: https://html.spec.whatwg.org/multipage/forms.html#concept-option-selectedness