Category: JavaScript

Sometimes, we want to convert Firebase timestamp to date and time with JavaScript.

In this article, we’ll look at how to convert Firebase timestamp to date and time with JavaScript.

How to convert Firebase timestamp to date and time with JavaScript?

To convert Firebase timestamp to date and time with JavaScript, we use the Date constructor.

For instance, we write

const timestamp = { nanoseconds: 0, seconds: 1562524200 };

console.log(new Date(timestamp.seconds * 1000));

We convert seconds to milliseconds by multiplying it by 1000.

Then we pass it into the Date constructor to convert it into a Date object.

Conclusion

To convert Firebase timestamp to date and time with JavaScript, we use the Date constructor.

Sometimes, we want to wait until all JavaScript files are loaded before executing JavaScript code.

In this article, we’ll look at how to wait until all JavaScript files are loaded before executing JavaScript code.

How to wait until all JavaScript files are loaded before executing JavaScript code?

To wait until all JavaScript files are loaded before executing JavaScript code, we can watch the load event.

For instance, we write

window.addEventListener("load", () => {
  // ...
});

to call addEventListener with 'load' and a function that’s called when all the JavaScript files are loaded.

We put the code that we want to run after all the JavaScript files are loaded in the callback.

Conclusion

To wait until all JavaScript files are loaded before executing JavaScript code, we can watch the load event.

Sometimes, we want to smooth scroll anchor links with JavaScript.

In this article, we’ll look at how to smooth scroll anchor links with JavaScript.

How to smooth scroll anchor links with JavaScript?

To smooth scroll anchor links with JavaScript, we call the window.scroll method.

For instance, we write

window.scroll({
  behavior: "smooth",
  left: 0,
  top: element.offsetTop,
});

to call scroll with an object that has the behavior property set to 'smooth' to do smooth scrolling.

And we set top to element.offsetTop to scroll to the top of the element.

Conclusion

To smooth scroll anchor links with JavaScript, we call the window.scroll method.

Sometimes, we want to get full file path in Node.js.

In this article, we’ll look at how to get full file path in Node.js.

How to get full file path in Node.js?

To get full file path in Node.js, we use the path.resolve method.

For instance, we write

const path = require("path");
const absolutePath = path.resolve("./Uploads/MyFile.csv");

to call path.resolve with a relative path string to return the full path of the file as a string.

Conclusion

To get full file path in Node.js, we use the path.resolve method.