@aaronngray/electron-spawn 中文文档教程
electron-spawn
从命令行在无头电子(chromium)窗口中轻松运行代码
usage
$ npm i electron-prebuilt -g
$ npm i electron-spawn -g
$ echo "console.log('hello')" > foo.js
$ electron-spawn foo.js
您还可以导出一个函数,该函数接受参数以获取传递给您的程序的所有参数:
$ echo "module.exports = function (args) { console.log(args) }" > foo.js
$ electron-spawn foo.js bar baz
# outputs ['bar', 'baz']
或者您可以使用 process.argv
之类的一个普通的节点程序:
$ echo 'console.log(process.argv.slice(2))' > hello.js
$ electron-spawn hello.js beep boop
# outputs: ['beep', 'boop']
process.stdin
也可以工作:
process.stdin.on('data', function (buf) {
console.log('buf=', buf)
})
$ echo beep boop | electron-spawn stdin.js
buf= <Buffer 62 65 65 70 20 62 6f 6f 70 0a>
api
var spawn = require('electron-spawn')
一个生成 electron 的
var electron = spawn(scriptname[, params..., execOptions])
函数
返回 传递给进程的参数列表
execOptions
是一个对象文字,用于设置有关进程如何生成
var spawn = require('electron-spawn')
var electron = spawn('foo.js', 'bar', 'baz', {
detached: true
})
electron.stderr.on('data', function (data) {
console.error(data.toString())
})
electron.stdout.on('data', function (data) {
console.log(data.toString())
})
限制的选项:
- cannot automatically yet exit your program like how node does when you have no more activity on the event loop
But in your script you can callrequire('electron').remote.app.quit()
to quit when it's done:
module.exports = function (args) {
var img = new Image()
img.onload = function () {
require('electron').remote.app.quit()
}
img.src = 'http://example.com/cat.gif'
}
或者您可以像普通调用一样调用 process.exit()
节点程序。
electron-spawn
run code easily inside of headless electron (chromium) windows from the command line
usage
$ npm i electron-prebuilt -g
$ npm i electron-spawn -g
$ echo "console.log('hello')" > foo.js
$ electron-spawn foo.js
you can also export a function that takes arguments to get all the arguments passed in to your program:
$ echo "module.exports = function (args) { console.log(args) }" > foo.js
$ electron-spawn foo.js bar baz
# outputs ['bar', 'baz']
or you can use process.argv
like an ordinary node program:
$ echo 'console.log(process.argv.slice(2))' > hello.js
$ electron-spawn hello.js beep boop
# outputs: ['beep', 'boop']
process.stdin
works too:
process.stdin.on('data', function (buf) {
console.log('buf=', buf)
})
$ echo beep boop | electron-spawn stdin.js
buf= <Buffer 62 65 65 70 20 62 6f 6f 70 0a>
api
var spawn = require('electron-spawn')
return a function that spawn electron
var electron = spawn(scriptname[, params..., execOptions])
returns a child process running electron with the given scriptname
params
are a list of arguments passed to the process
execOptions
is an object literal to set options on how the process gets spawned
var spawn = require('electron-spawn')
var electron = spawn('foo.js', 'bar', 'baz', {
detached: true
})
electron.stderr.on('data', function (data) {
console.error(data.toString())
})
electron.stdout.on('data', function (data) {
console.log(data.toString())
})
limitations:
- cannot automatically yet exit your program like how node does when you have no more activity on the event loop
But in your script you can callrequire('electron').remote.app.quit()
to quit when it's done:
module.exports = function (args) {
var img = new Image()
img.onload = function () {
require('electron').remote.app.quit()
}
img.src = 'http://example.com/cat.gif'
}
or you can call process.exit()
like an ordinary node program.