无法读取电子 javascript 中未定义的属性“on"

Cannot read property #39;on#39; of undefined in electron javascript(无法读取电子 javascript 中未定义的属性“on)

问题描述

我正在尝试运行此代码，但每次都收到此错误消息.首先，我全局安装了 npm.然后我在我的应用程序中安装了它，但仍然出现同样的错误.

I am trying to run this code but every time I am getting this error message. First I installed npm globally. Then I installed it within my app but still getting same error.

未捕获的类型错误:无法读取未定义的属性on"目的.(H:electricmain.js:12:4) 在对象处.(H:electricmain.js:63:3) 在 Module._compile (module.js:571:32) 在Module.load 中的 Object.Module._extensions..js (module.js:580:10)(module.js:488:32) 在 tryModuleLoad (module.js:447:12) 在Module.require 处的 Function.Module._load (module.js:439:3)(module.js:498:17) 在需要 (internal/module.js:20:19) 在file:///H:/electric/views/login.html:2:3

Uncaught TypeError: Cannot read property 'on' of undefined at Object. (H:electricmain.js:12:4) at Object. (H:electricmain.js:63:3) at Module._compile (module.js:571:32) at Object.Module._extensions..js (module.js:580:10) at Module.load (module.js:488:32) at tryModuleLoad (module.js:447:12) at Function.Module._load (module.js:439:3) at Module.require (module.js:498:17) at require (internal/module.js:20:19) at file:///H:/electric/views/login.html:2:3

const electron = require('electron');
const {Menu} = require('electron');
const {app} = require('electron');
const {BrowserWindow} = require('electron');
const conn = require('mysql');
const path = require('path');
const url = require('url');

// const app = electron.app;
// const BrowserWindow = electron.BrowserWindow;
var mainWindow = null;
app.on('ready', function () {
    mainWindow = new BrowserWindow({ width: 1024, height: 768, backgroundcolor: '#2e2c29' });
    mainWindow.loadURL(url.format({
        pathname: 'popupcheck.html',
        protocol: 'file:',
        slashes: true
    }));enter code here
    mainWindow.webContents.openDevTools();
    mainWindow.setProgressBar(1);
});`][1]

推荐答案

我猜你正在尝试使用 node.js 运行 electron.你的 package.json 是这样的吗?

I guess you are trying to run electron using node. Does your package.json look like this?

{
    "scripts": {
        "start": "node main.js"
    }
}

请改成这样运行电子应用

please change to run electron app like this

{
    "scripts": {
        "start": "electron ."
    }
}

它应该可以工作

注意:对于使用类似命令将电子安装到全局的人来说这是额外的

note: this is extra for somebody that install electron to global with command something like this

npm install -g electron

当你想在代码中使用电子时require(electron)你应该使用这个命令将全局路径链接到你的当前目录

when you want to use electron in the code require(electron) you should link the global path to your current directory by using this command

npm link electron

这篇关于无法读取电子 javascript 中未定义的属性“on"的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！