flutter_jscore
JavaScriptCore for Flutter. The plugin provides the ability to evaluate JavaScript programs from within dart.
Demo
| Screen recording | Apk |
|---|---|
 |
 |
| Code | Download |
Getting Started
Add plugin
// pub
dependencies:
flutter_jscore: ^last_version
// import
dependencies:
flutter_jscore:
path: Your local path
// git
dependencies:
flutter_jscore:
git:
url: git://github.com/xuelongqy/flutter_jscore.git
Add dynamic library
Due to the size limitation of pub on package upload, you need to add JavaScriptCore dynamic library to the project by yourself.
You can refer to the example. of course you can refer to webkit to compile it.
Set JscFfi.lib to use the JavaScriptCore dynamic library.
JscFfi.lib = Platform.isIOS || Platform.isMacOS
? DynamicLibrary.open('JavaScriptCore.framework/JavaScriptCore')
: Platform.isWindows
? DynamicLibrary.open('JavaScriptCore.dll')
: Platform.isLinux
? DynamicLibrary.open('libjavascriptcoregtk-4.0.so.18')
: DynamicLibrary.open('libjsc.so');
Android
You can get the aar file containing libjsc.so in jsc-android, and add to your project.
Take the libs folder as an example, add it to the build.gradle of the module.
android {
repositories {
flatDir {
dirs 'libs'
}
}
}
dependencies {
implementation(name:'**', ext:'aar')
}
You also need to add libc++_shared.so, because this is a dependency of libjsc.so.
Take the jniLibs folder as an example, add it to the build.gradle of the module.
android {
sourceSets {
main {
jniLibs.srcDirs = ['jniLibs']
}
}
}
If your project uses C++, then you can add the code in the module’s build.gradle.
android {
defaultConfig {
externalNativeBuild {
make {
arguments "-DANDROID_STL=c++_shared"
}
}
}
}
iOS and macOS
You don’t need to do anything, because JavaScriptCore comes with iOS and macOS.
Windows
You can use the dynamic library in the example, or compile it yourself. And configure in CMakeLists.txt.
# Add JavaScriptCore libs
install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/JavaScriptCore/"
DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
COMPONENT Runtime)
Linux
You can use libjavascriptcoregtk as a dependency, or compile webkitgtk yourself.
The names of dynamic libraries in different Linux distributions may be different. So you need to set JscFfi.lib.
ubuntn or Debian
apt-get install libjavascriptcoregtk-4.0-18
JscFfi.lib = DynamicLibrary.open('libjavascriptcoregtk-4.0.so.18');
Archlinux
pacman -S webkit2gtk
JscFfi.lib = DynamicLibrary.open('libjavascriptcoregtk-4.0.so');
Usage
import 'package:flutter_jscore/flutter_jscore.dart';
void runJS() {
JSContext jsContext = JSContext.createInGroup();
// Replace '1 + 1' with your JavaScript code
JSValue jsValue = jsContext.evaluate('1 + 1');
print(jsValue.string);
jsContext.release();
}
JavaScriptCore
Evaluate JavaScript programs from within an app, and support JavaScript scripting of your app.
dart:ffi
Foreign Function Interface for interoperability with the C programming language. flutter_jscore uses dart:ffi so you don't have to worry about performance loss across programming languages.
Supported platforms
- iOS (7.0+)
- macOS (10.5+)
- Android (arm32, arm64, x86, x86_64)
- Windows (x86_64)
- Linux (x86_64)
Linux dependencies
If you use it on Linux, you must make sure to have the following dependencies.
- libglib-2.0.so.0
- libicui18n.so.66
- libicuuc.so.66
- libdl.so.2
- libgio-2.0.so.0
- libgobject-2.0.so.0
- libpthread.so.0
- libstdc++.so.6
- libm.so.6
- libgcc_s.so.1
- libc.so.6
- ld-linux-x86-64.so.2
APIs
I don't think there is much to describe, flutter_jscore just makes a simple package. You can refer to the documentation of JavaScriptCore and the documentation on pub.
Donation
If you like my project, please in the upper right corner of the project "Star". Your support is my biggest encouragement! ^_^ You can also scan the qr code below or 
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QQ Group - 554981921
Into the group of instructions
The group is not only solve the problem of EasyreFresh, any Flutter related issues can be discussed. Just as its name, craigslist, as long as there is time, group of Lord will help you solve problems together.
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