优化

electron/main.js

@@ -40,11 +40,11 @@ app.whenReady().then(() => {
   });
 
   // 给渲染进程返回打印机列表
-  ipcMain.on('getPrintList', () => {
-    win.webContents.getPrintersAsync().then(res => {
-      win.webContents.send('printList', res)
-    })
-  })
+  ipcMain.on("getPrintList", () => {
+    win.webContents.getPrintersAsync().then((res) => {
+      win.webContents.send("printList", res);
+    });
+  });
 
   // 创建打印小票子窗口
   const printWin = new BrowserWindow({
@@ -66,22 +66,22 @@ app.whenReady().then(() => {
   }
 
   // 接收订单页面发过来的参数发送给打印页
-  ipcMain.on('printerInfoSync', (event, arg) => {
-    printWin.webContents.send('getParams', arg)
-  })
+  ipcMain.on("printerInfoSync", (event, arg) => {
+    printWin.webContents.send("getParams", arg);
+  });
 
   // 执行打印操作
-  ipcMain.on('printStart', (event, arg) => {
+  ipcMain.on("printStart", (event, arg) => {
     console.log(arg);
-    const _parmas = JSON.parse(arg)
+    const _parmas = JSON.parse(arg);
     // console.log(_parmas)
-    let name = _parmas.deviceName
+    let name = _parmas.deviceName;
     printWin.webContents.print({
       silent: true,
       deviceName: name,
       pageSize: {
         width: 58000,
-        height: 216000
+        height: 216000,
       },
       scaleFactor: 80,
       landscape: false,
@@ -90,14 +90,14 @@ app.whenReady().then(() => {
         top: 0,
         bottom: 0,
         left: 0,
-        right: 0
+        right: 0,
       },
       dpi: {
         horizontal: 203,
-        vertical: 203
-      }
-    })
-  })
+        vertical: 203,
+      },
+    });
+  });
 });
 
 app.on("window-all-closed", () => {