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  1. Fully implement the FormData API

    Currently the FormData API is only partially implemented in Edge. Most of the more useful methods are missing including: has(), get(), set(), delete(), entries(), and many others.

    FormData is already fully implemented on the other major browsers (Firefox, Chrome, Safari) - see: https://developer.microsoft.com/en-us/microsoft-edge/platform/catalog/?q=formdata

    165 votes
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    3 comments  ·  JavaScript  ·  Flag idea as inappropriate…  ·  Admin →
  2. ResizeObserver

    A implementation of the ResizeObserver API would be nice.

    Explainer: https://github.com/WICG/ResizeObserver/blob/master/explainer.md
    Spec: https://wicg.github.io/ResizeObserver/

    Thanks!

    194 votes
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    0 comments  ·  JavaScript  ·  Flag idea as inappropriate…  ·  Admin →
  3. Spread operator for object literals

    This feature is currently Stage 3 and is implemented by Firefox stable, Chrome stable, Safari Preview, and Node stable.

    This is really useful for shallow cloning objects:

    let objClone = { ...obj };

    References:

    http://kangax.github.io/compat-table/esnext/

    https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_operator#Spread_in_object_literals

    490 votes
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    3 comments  ·  JavaScript  ·  Flag idea as inappropriate…  ·  Admin →
  4. audio worklet

    Hello,
    We saw that within your developer documentation site that AudioWorklet is being considered for development.
    Do you have a timeframe of when this will be developed and released as this is important feature for us.

    https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/15812544/

    1 vote
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    0 comments  ·  JavaScript  ·  Flag idea as inappropriate…  ·  Admin →
  5. Support BigInt

    Please support BigInt, a stage-3 proposal. https://tc39.github.io/proposal-bigint/

    78 votes
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    0 comments  ·  JavaScript  ·  Flag idea as inappropriate…  ·  Admin →
  6. Implement Web Share API

    Web Share API landed on Chrome for Android in version 61. It's a neat way of providing native sharing hooks to a web app.

    Example code: https://gist.github.com/bogas04/50eae983a9b478e172a22bb9fce9c77e
    API Spec: https://wicg.github.io/web-share/
    Explainer: https://github.com/WICG/web-share/blob/master/docs/explainer.md

    216 votes
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    4 comments  ·  JavaScript  ·  Flag idea as inappropriate…  ·  Admin →
  7. Asynchronous Clipboard API

    The clipboard spec now has an asynchronous API [2] which is significantly more ergonomic than past clipboard APIs – it avoids various issues that the old document.execCommand("copy") approach had, and is much easier to use:

    navigator.clipboard.writeText("hello world").then(...);

    IE 9/10/11 shipped an unstandardized API for copying text or URLs to the clipboard. Edge shipped an older version of the draft standard clipboard/editing-spec-based-API [1], but it has numerous bugs and inconsistencies [2] that even *make it impossible to tell if the attempted copy action has succeeded*. Existing bugs aren't seeing attention, and it seems likely to me that there are more undiscovered…

    59 votes
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    0 comments  ·  JavaScript  ·  Flag idea as inappropriate…  ·  Admin →
  8. Support navigator.keyboard.getLayoutMap() API

    An API that returns a map which translates from `KeyboardEvent.code` values into a strings that can be shown to the user to identify each key.

    This is not possible with existing web platform APIs because the value that should be shown to the user depends on the keyboard layouts that the user has installed and active.

    WICG incubation spec: https://wicg.github.io/keyboard-map/

    Note: there is some overlap between this and a previous feature request https://wpdev.uservoice.com/forums/257854-microsoft-edge-developer/suggestions/6508637-uievents-keyboard-query-apis

    The previous request was based on an old proposal that is no longer being pursued in the standards bodies.

    13 votes
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    1 comment  ·  JavaScript  ·  Flag idea as inappropriate…  ·  Admin →
  9. RegExp Lookbehind Assertions

    Lookbehind assertions are now part of the ECMAScript specification. Google's V8 has had an implementation of it for a while now.

    See: https://github.com/tc39/proposal-regexp-lookbehind

    23 votes
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    0 comments  ·  JavaScript  ·  Flag idea as inappropriate…  ·  Admin →
  10. JavaScript stepUp / stepDown for number input

    https://www.w3schools.com/jsref/met_number_stepup.asp
    https://www.w3schools.com/jsref/met_number_stepdown.asp

    These are currently not supported by Edge.

    They work fine for range or date input, but someone just missed the most natural use of these methods for number input.

    9 votes
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    1 comment  ·  JavaScript  ·  Flag idea as inappropriate…  ·  Admin →
  11. Async Generators / Async Iterators

    Async iterators and async generator functions(https://github.com/tc39/proposal-async-iteration) are now a stage-3 ECMAScript proposal, nearly finished. They make many styles of programming in JavaScript easier (https://ponyfoo.com/articles/javascript-asynchronous-iteration-proposal); in particular, they are important for WHATWG Streams (https://streams.spec.whatwg.org). As of 2017-10-22, async generators have already been implemented in Blink, Firefox, and WebKit.

    108 votes
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    0 comments  ·  JavaScript  ·  Flag idea as inappropriate…  ·  Admin →
  12. Pretty Print of large JS files is broken

    Pretty print no longer works with large JS files in the latest updates. I thought it was completely broken, but for small files it works fine. Please fix, this is making hard to justify using Edge when I can't debug.

    3 votes
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    0 comments  ·  JavaScript  ·  Flag idea as inappropriate…  ·  Admin →
  13. 146 votes
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    1 comment  ·  JavaScript  ·  Flag idea as inappropriate…  ·  Admin →
  14. "(input[type=file] element).files = dataTransfer.files" fails in Edge

    We fail to pass "dataTransfer.files" of DragEvent to "files" property of the input[type="file"] element in Edge. For example:

    HTML:
    <input id="fileItem" type="file">

    Javascript:
    var myfiles = dataTransfer.files;
    document.getElementById('fileItem').files = myfiles; //This fails in Edge, but no errors are shown in console

    Steps to Reproduce a Bug:
    https://jsfiddle.net/vth82jst/2/

    1. Drag & drop your file to input[type="file"] area
    2. Check the "drop file name" and "input value"
    3. Even if we drop a file, the "input value" does not change in Edge (It remains "ファイルは選択されていません" unchanged).

    I am troubled when I want to select files by drag & drop in Edge.
    This…

    6 votes
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    0 comments  ·  JavaScript  ·  Flag idea as inappropriate…  ·  Admin →
  15. Web Bluetooth API with GATT support

    We should be able to call the API's from Edge using JavaScript

    41 votes
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    1 comment  ·  JavaScript  ·  Flag idea as inappropriate…  ·  Admin →
  16. Support filter in CanvasRenderingContext2D

    Please support filter effects in canvas api.
    This feature has been supported in Chrome 52+ and Firefox 49+.

    https://developer.mozilla.org/ja/docs/Web/API/CanvasRenderingContext2D/filter

    66 votes
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    0 comments  ·  JavaScript  ·  Flag idea as inappropriate…  ·  Admin →
  17. 61 votes
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    2 comments  ·  JavaScript  ·  Flag idea as inappropriate…  ·  Admin →
  18. support Web Crypto API inside a Web Worker

    The Web Crypto API is not available inside a Web Worker. Both "self.crypto" and "self.msCrypto" are undefined inside a worker context.

    73 votes
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    2 comments  ·  JavaScript  ·  Flag idea as inappropriate…  ·  Admin →
  19. full feature support for Indexeddb

    IE support only basic feature of IndexedDB specification http://www.w3.org/TR/IndexedDB/. Data intensive web app using full specification are not able to run on IE. Specifically missing feature are compound index, complex key path, multiEntry index and storing blob.

    671 votes
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    under review  ·  11 comments  ·  JavaScript  ·  Flag idea as inappropriate…  ·  Admin →
  20. File constructor

    Add support for the File constructor Eg:

    new File([""], "filename.txt", {type: "text/plain"; lastModified: Date.now();})

    See spec: https://www.w3.org/TR/FileAPI/#file

    20 votes
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    0 comments  ·  JavaScript  ·  Flag idea as inappropriate…  ·  Admin →
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