To set max viewport in Node Puppeteer, we set the --window-size option.
For instance, we write
const browser = await puppeteer.launch({
headless: false,
args: ["--window-size=1920,1080"],
defaultViewport: null,
});
to call launch to launch the browser.
We set args to ["--window-size=1920,1080"] to make the window size 1920×1080.
To use ES6 modules in Node 12, we set the --experimental-modules option.
For instance, we write
{
"scripts": {
"start": "node --experimental-modules src/index.mjs "
}
}
in package.json to add the start script.
We use it to run node with the --experimental-modules on to enable ES6 modules support.
To fix Uncaught Error: Cannot find module ‘jquery’ with Node Electron app, we need to add the jQuery script into our HTML file.
For instance, we write
<!DOCTYPE html>
<html>
<head></head>
<body>
<h1>Hello World!</h1>
</body>
<script src="https://code.jquery.com/jquery-2.1.4.min.js"></script>
<script>
window.jQuery = window.$ = jQuery;
$(document).ready(function () {
console.log("jQuery is loaded");
});
</script>
</html>
to add the jQuery script with
<script src="https://code.jquery.com/jquery-2.1.4.min.js"></script>
To use a self signed certificate for a HTTPS Node.js server, we set a few options.
For instance, we write
const options = {
host: "localhost",
port: 8000,
path: "/api/v1/test",
rejectUnauthorized: false,
requestCert: true,
agent: false,
};
https
.createServer(options, (req, res) => {
res.writeHead(200);
res.end("OK\n");
})
.listen(8000);
to set rejectUnauthorized to false, requestCert to true, and agent to false to allow self signed certificates to be used on the https server.
To create line breaks in console.log() in Node.js, we log '\n'.
For instance, we write
console.log({ a: 1 }, "\n", { b: 3 }, "\n", { c: 3 });
to log line breaks with '\n'.