Category: JavaScript Answers

Sometimes, we want to load textures in THREE.js and JavaScript.

In this article, we’ll look at how to load textures in THREE.js and JavaScript.

How to load textures in THREE.js and JavaScript?

To load textures in THREE.js and JavaScript, we call loadTexture with a callback that’s called when the texture is loaded.

For instance, we write

const texture = THREE.ImageUtils.loadTexture("crate.gif", {}, () => {
  renderer.render(scene);
});

to call loadTexture with the path to the texture file.

And we call it with a callback that’s called after the texture is loaded as the 3rd argument.

Conclusion

To load textures in THREE.js and JavaScript, we call loadTexture with a callback that’s called when the texture is loaded.

Sometimes, we want to call a function inside of another function with JavaScript.

In this article, we’ll look at how to call a function inside of another function with JavaScript.

How to call a function inside of another function with JavaScript?

To call a function inside of another function with JavaScript, we use parentheses.

For instance, we write

const function2 = () => {
  //...
};

const function1 = () => {
  function2();
};

to define functions function1 and function2.

We call function2 in function1 with function2();.

Conclusion

To call a function inside of another function with JavaScript, we use parentheses.

Sometimes, we want to load a page on button click with JavaScript.

In this article, we’ll look at how to load a page on button click with JavaScript.

How to load a page on button click with JavaScript?

To load a page on button click with JavaScript, we can use window.open.

For instance, we write

<button
  type="button"
  onclick="window.open('http://www.example.com/', '_blank');"
>
  View Example Page
</button>

to call window.open with the URL to open and '_blank' to open it in a new window.

We set the code as the value of the onclick attribute to open the window when we click it.

Conclusion

To load a page on button click with JavaScript, we can use window.open.

Sometimes, we want to get get week number based on a specific day with Moment.js and JavaScript.

In this article, we’ll look at how to get the week number based on a specific day with Moment.js and JavaScript.

How to get get the week number based on a specific day with Moment.js and JavaScript?

To get the week number based on a specific day with Moment.js and JavaScript, we use the format method.

For instance, we write

const week = moment().format("w");
const week2 = moment().format("W");
const week3 = moment().format("ww");
const week4 = moment().format("WW");

to call format to get the week number of the current date.

'w' and 'W' return a number like 1.

'ww' and 'WW' returns a number like 01.

The upper case format strings returns the ISO week.

Conclusion

To get the week number based on a specific day with Moment.js and JavaScript, we use the format method.

Sometimes, we want to create rooms in Socket.io and JavaScript.

In this article, we’ll look at how to create rooms in Socket.io and JavaScript.

How to create rooms in Socket.io and JavaScript?

To create rooms in Socket.io and JavaScript, we just call join to join the room.

For instance, we write

io.sockets.on("connection", (socket) => {
  socket.on("create", (room) => {
    socket.join(room);
  });
});

to listen for the room create event on server side.

We get the room name and call join with it if the create event is emitted from client side.

On client side, we write

const socket = io.connect();
socket.emit("create", "room1");

to call socket.emit with 'create' and 'room1' to emit the create event with value 'room1‘.

Conclusion

To create rooms in Socket.io and JavaScript, we just call join to join the room.