support DOMParser

[janryWang]

https://developer.mozilla.org/en/docs/Web/API/DOMParser

[rafaellyra]

+1 for this feature

[domenic]

Every +1 causes me to deprioritize this feature by an additional month.

[rafaellyra]

Can you explain why? (so I can avoid this mistake again)

[domenic]

+1s add no additional information. They are basically spam.

[rafaellyra]

for me +1 says how many people need this feature, in a OS project I understand that is important have an idea on how many people need each feature and prioritize they, even asking for people that want the feature to help implementing, and I do understand that if you have an OS project you want that people use and help to improve.

[inikulin]

I wonder how long will it take until someone will write a GitHub bot that converts +1, 👍 , etc. into the voting bar and removes original comments. I have this thing on my TODO list, actually, but it's not a high-priority project idea currently.

[domenic]

I'd still get the spam email, so it wouldn't solve anything.

[inikulin]

I have big hopes for this thing: https://blog.devspace.io/the-problems-with-github-s-news-feed-abf5e1a7aefd#.dtdoffgru Maybe it will have some filtering functionality to reduce this kind of junk.

[kentcdodds]

I'm going to try my hand at implementing this one. @domenic, I'm looking at the contributing.md right now and currently running the tests. Is there anything specific about this API that I should be sure to think about? I'll let you know if I have any other questions.

[domenic]

@kentcdodds I gave an outline in #1368 (comment) that might be helpful :)

[kentcdodds]

FYI, I just fresh cloned the project, installed the deps, and ran the tests. I have three tests failing out of the gate:

  1) Web Platform Tests html/browsers/history/the-location-interface/location_port.html:
     Failed in "location port": 
assert_equals: port expected "w3c-test.org" but got ""

    at Object.<anonymous> (http://w3c-test.org/html/browsers/history/the-location-interface/location_port.html:17:7)
    at Object.Test.step (http://w3c-test.org/resources/testharness.js:1398:25)
    at test (http://w3c-test.org/resources/testharness.js:496:18)
    at http://w3c-test.org/html/browsers/history/the-location-interface/location_port.html:2:5
    at Object.exports.runInContext (vm.js:44:17)
    at processJavaScript (/Users/kdodds/Developer/jsdom/lib/jsdom/living/nodes/HTMLScriptElement-impl.js:115:10)


  2) Web Platform Tests XMLHttpRequest/security-consideration.sub.html:
     Failed in "ProgressEvent: security consideration": 
assert_unreached: MUST NOT dispatch progress event. Reached unreachable code

    at XMLHttpRequest.callback.(anonymous function) (/Users/kdodds/Developer/jsdom/lib/jsdom/living/events/EventTarget-impl.js:246:32)
    at invokeEventListeners (/Users/kdodds/Developer/jsdom/lib/jsdom/living/events/EventTarget-impl.js:210:27)
    at invokeInlineListeners (/Users/kdodds/Developer/jsdom/lib/jsdom/living/events/EventTarget-impl.js:168:7)


  3) Web Platform Tests cors/basic.htm:
     2 errors in test:

Failed in "Cross domain different port": 
assert_true: Got CORS-allowed response expected true got false

    at Object.<anonymous> (http://w3c-test.org/cors/basic.htm:33:17)
    at Object.Test.step (http://w3c-test.org/resources/testharness.js:1398:25)
    at XMLHttpRequest.onreadystatechange (http://w3c-test.org/resources/testharness.js:1422:35)
    at XMLHttpRequest.callback.(anonymous function) (/Users/kdodds/Developer/jsdom/lib/jsdom/living/events/EventTarget-impl.js:246:32)
    at invokeEventListeners (/Users/kdodds/Developer/jsdom/lib/jsdom/living/events/EventTarget-impl.js:210:27)
    at invokeInlineListeners (/Users/kdodds/Developer/jsdom/lib/jsdom/living/events/EventTarget-impl.js:168:7)
Failed in "Same domain different port": 
assert_true: Got CORS-allowed response expected true got false

    at Object.<anonymous> (http://w3c-test.org/cors/basic.htm:33:17)
    at Object.Test.step (http://w3c-test.org/resources/testharness.js:1398:25)
    at XMLHttpRequest.onreadystatechange (http://w3c-test.org/resources/testharness.js:1422:35)
    at XMLHttpRequest.callback.(anonymous function) (/Users/kdodds/Developer/jsdom/lib/jsdom/living/events/EventTarget-impl.js:246:32)
    at invokeEventListeners (/Users/kdodds/Developer/jsdom/lib/jsdom/living/events/EventTarget-impl.js:210:27)
    at invokeInlineListeners (/Users/kdodds/Developer/jsdom/lib/jsdom/living/events/EventTarget-impl.js:168:7)

Not sure whether that's helpful. I'm thinking it's probably something wrong with my environment because the Travis build has passing tests. So I'm just going to keep going and we'll see if this matters when I make my PR.

[Sebmaster]

@kentcdodds You might have to do this: https://github.com/w3c/web-platform-tests/#running-the-tests

[kentcdodds]

I saw that, but the tests seemed to be running ok without me doing that. I should have just assumed that's why these failed. Thanks @Sebmaster :-)

[kentcdodds]

Thanks @domenic.

[domenic]

Thank you for getting me started!