gopherjs | A compiler from Go to JavaScript | Binary Executable Format library
kandi X-RAY | gopherjs Summary
kandi X-RAY | gopherjs Summary
Nearly everything, including Goroutines (compatibility table). Performance is quite good in most cases, see HTML5 game engine benchmark. Cgo is not supported.
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Top functions reviewed by kandi - BETA
- Compile compiles a list of AST files .
- funcPC returns the value of the function f .
- parseAndAugment is the same as parse except it returns a set of ASTs that should be replaced by the given package .
- reflectType returns the reflect . Type of a given object .
- _references method to reflect . Object
- translateFunction translates a function to a function .
- importWithSrcDir creates a new PackageData with the given source directory .
- Assign converts a statement to an assign statement .
- StructOf returns the type of StructField .
- deepValueEqualJs returns true if two values are equal .
gopherjs Key Features
gopherjs Examples and Code Snippets
Community Discussions
Trending Discussions on gopherjs
QUESTION
ANSWER
Answered 2020-Nov-09 at 09:31GopherJS has been effectively abandoned, and will not be adding support for Go 1.13 or later. That said, there has been some work to support Go 1.13 and 1.14 in some forks. It remains to be seen how much traction a fork is likely to gain moving forward.
You may have some success using one of the unofficial forks, if you really need this to work.
So in summary, your options are:
- Use an unofficial fork of GopherJS which supports Go 1.14 sufficiently for your needs.
- Use an old or backported* version of Vecty which works with Go 1.12 and GopherJS
- Consider using Go/WASM in place of GopherJS.
*You'll likely have to do this backport yourself.
QUESTION
I recently found out that Go compiles down to WebAssembly. Cool!
As per this Go doc, the Go toolchain itself is written in Go.
This made me think, can the Go compiler run in the browser? Can I make a website which given a file path through an upload button (though, without uploading anything), can compile a Go project and return the executable as a "download"?
The end result I'm looking for is an executable file saved to disk, not for the Go code to run in a browser, but I don't need the exact scenario above to be followed as long as that is the final result.
If this is possible, what are the limitations, if any?
Additional resources I have looked at:
- A compiler from Go to WASM on GitHub
- Someone working on a game where entered Go code runs in the browser
EDIT: I have started work on this, based on a similar project. The repo can be found here: https://github.com/TR-SLimey/IBGC
...ANSWER
Answered 2020-Jul-03 at 18:00It is possible, but it's hard to do.
You can't access files using WebAssembly. Instead, you need the user to drop a folder inside the webpage and use the File and Directory Entries API to get the files and their contents.
But the real problem is passing the files from JS to WASM and vice-versa. You'll also need to replace in the compiler source code all the calls to the Go standard library that would access files to calls to JS functions. Those function need to access the WASM memory directly. You will need to modify the compiler quite a bit.
To download the binary, you can create a Blob
, use URL.createObjectURL()
to get an URL to that blob, create an element with
.download = true
and .href =
, and then .click()
it.
The performance might be worse than running the Go compiler directly, but other than that it should work just fine.
QUESTION
I am trying to convert this whole section of code from Javascript to GopherJs. So far i have not been able to do event listeners as i am still a newbie to Javascript. This is the JavaScript
...ANSWER
Answered 2019-Sep-30 at 16:58To obtain the DOM i used "honnef.co/go/js/dom"
library.
Everything else was step by step as in Javascript.
Example:
QUESTION
In GopherJS, members of an object are themselves objects (just as js handles things under the hood, ttbomk).
So when accessing a member, one gets back a *js.Object
:
ANSWER
Answered 2019-Jun-26 at 14:55Woo-hoo - got it! Thanks for suggestions :)
QUESTION
go get -u github.com/junegunn/fzf
works fine but want to test the development branch like so:
ANSWER
Answered 2019-Mar-30 at 17:28Package github.com/gdamore/tcell
which is required by fzf
has gopkg.in/DATA-DOG/go-sqlmock.v1
dependency. In version 1.3.3 of go-sqlmock
they started to use go modules without version suffix and now explicit indication of the version no more working.
QUESTION
I am trying to deploy a Go cloud function. I successfully deployed this function to one GCP project, but now when trying to deploy it to another I can't seem to get it to deploy.
I use this command to deploy the function:
...ANSWER
Answered 2019-Feb-21 at 17:54After contacting Google I have figured out what the issue is.
The issue is a combination of an error character limit of 4096 characters in Google Cloud Functions wrapper and an artificial timeout for go mod downloads imposed by Google.
The issue can be resolved by vendoring your dependencies as explained here: https://cloud.google.com/functions/docs/writing/specifying-dependencies-go#using_a_vendor_directory
QUESTION
As an exercise, I'm converting a single page application from JavaScript to GopherJS.
In the JS code, the following appears:
...ANSWER
Answered 2018-May-31 at 13:30For $(this)
you'd need to use js.MakeFunc to get access to the this
object. Something along the lines of
QUESTION
When running gopherjs test
, is there a simple way to include jquery.js for use in the test and code-under-test?
I am currently loading jquery from a CDN in my index.html
, but can download it with npm if that will allow me to include it.
ANSWER
Answered 2018-May-26 at 17:02Including jQuery is easy, just require
it as you would any other node module. However, GopherJS tests run in node.js, which does not have a DOM present by default, which is where jQuery is most useful. There are Node.js DOM emulators, but in my experience, they are not easy to make work properly, or at least not in GopherJS.
QUESTION
I'm going through a Cordova tutorial and trying to do the exercises in GopherJS. I installed the "device" plugin (cordova plugin add cordova-plugin-device
) and am trying to get the fields of the device:
ANSWER
Answered 2018-Apr-25 at 20:50I figured it out. I need to wait until the deviceready
event occurs:
QUESTION
I have written a simple package in Go and I have compiled with gopherJS .
I have then included it my HTML via
where the testpkg and Testfunc have been written in go.
I tried to look into the window object and it doesnt look like the function has been added to window.
...ANSWER
Answered 2018-Mar-22 at 19:23First you have to register your function if you want to call it from JavaScript. For that you may use the js.Global
variable.
Let's see a simple Go function called Hello()
which writes the "Hello World!"
text into the main document:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install gopherjs
The package github.com/gopherjs/gopherjs/js (see documentation) provides functions for interacting with native JavaScript APIs. For example the line.
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