上图：
index.js
const {app, BrowserWindow, ipcMain } = require('electron');
const path = require('path');
const fs = require('fs')
app.on("ready",() => {
const mainWindow = new BrowserWindow({
width: 800,
height: 600,
resizable: true,
frame: true,
show: true,
backgroundColor: 'pink',
webPreferences: {
nodeIntegration: true,
// 开启node
contextIsolation: false,
// 开启remote
enableRemoteModule:true
}
});
mainWindow.loadFile("index.html")
//打开控制面板
mainWindow.webContents.openDevTools();
ipcMain.on('asynchronous-message', function(event, arg) {
// arg是从渲染进程返回来的数据
fs.writeFile(path.join(__dirname, "data.json"),JSON.stringify(arg), "utf8",(err)=>{
if(err){
console.log("写入失败")
}else {
console.log("写入成功")
}
})
});
});
app.on("window-all-closed",() => {
if(process.platform !== "darwin") {
app.quit()
}
})
renderer.js
// 渲染进程
const ipcRenderer = require("electron").ipcRenderer;
// 这里的会传递回给主进程，这里的第一个参数需要对应着主进程里on注册事件的名字一致
ipcRenderer.send("asynchronous-message", "传递回去ping");
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<button id="btn">同步发送消息</button>
</body>
<script type="text/javascript" src="./renderer.js"></script>
</html>