Books.find(
{ "authors": { "$regex": "Alex", "$options": "i" } },
function(err,docs) {
}
);
Here is what the above code is Doing:
1. We’re using the find() method to search for all documents in the books collection.
2. We’re using the $regex operator to find all documents where the authors field contains the string “Alex”.
3. We’re using the $options operator to make the search case insensitive.
const Loading = () => { const [loadingStatus, setLoadingStatus] = useState(“.”); useEffect(() => { const intervalId = setInterval(() => { setLoadingStatus(ls => ls + “.”); }, 1000); return () => clearInterval(intervalId); }, []); return {`Loading ${loadingStatus}`}; }; Here is what the above code is Doing: 1. We’re using the useState hook to create a state…
function MyDiv(props) { const divProps = Object.assign({}, props); delete divProps.layout; if (props.layout === ‘horizontal’) { return } else { return } } Here is what the above code is Doing: 1. We’re creating a new component called MyDiv. 2. We’re passing all the props that are passed to MyDiv to the div that we’re returning….
console.log(date.toLocaleString(‘en-US’, { weekday: ‘short’, // long, short, narrow day: ‘numeric’, // numeric, 2-digit year: ‘numeric’, // numeric, 2-digit month: ‘long’, // numeric, 2-digit, long, short, narrow hour: ‘numeric’, // numeric, 2-digit minute: ‘numeric’, // numeric, 2-digit second: ‘numeric’, // numeric, 2-digit })); // Output: Tue, July 21, 2020, 10:01:14 AM Here is what the above…
// similar behavior as an HTTP redirect window.location.replace(“http://stackoverflow.com”); // similar behavior as clicking on a link window.location.href = “http://stackoverflow.com”; Here is what the above code is Doing: 1. window.location.assign() loads a new document. 2. window.location.replace() replaces the current document with a new one. 3. window.location.reload() reloads the current document. 4. window.location.href returns the href (URL)…
// https://github.com/zeit/next.js/tree/canary/examples/with-google-analytics Here is what the above code is Doing: 1. We’re importing the GoogleAnalytics class from the next-ga package. 2. We’re creating a new instance of the GoogleAnalytics class and passing in our tracking ID. 3. We’re exporting a function called pageview that takes a page path as an argument. 4. We’re calling the…
const array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]; const shuffledArray = array.sort((a, b) => Math.random() – 0.5); Here is what the above code is Doing: 1. We’re creating an array of numbers from 1 to 10. 2. We’re using the sort() method to shuffle the array. 3. We’re using the…