How to make a falling list JavaScript

Learn how to create a dynamic dropdown list using JavaScript with an example. Create custom user interfaces with dynamic data and user-friendly navigation.

Falling List in Javascript Example

Creating a "falling list" effect in Javascript is a fairly simple and straightforward process. In this example, we will create a list of items that fall from the top of the page to the bottom of the page, one at a time. First, we will create the HTML structure for the list. We will use an unordered list with a unique ID.

<ul id="fallingList">
  <li>Apples</li>
  <li>Oranges</li>
  <li>Bananas</li>
  <li>Grapes</li>
  <li>Pears</li>
</ul>

Next, we will create a Javascript function to handle the "falling list" effect. This function will take two arguments: a list of items and a speed. The speed parameter will determine how quickly the list items will fall.

function fallingList(list, speed) {
  // code goes here
}

Inside the function, we will use a for loop to iterate through each item in the list. For each item, we will use the setInterval() method to set a timer that will execute a set of instructions repeatedly at a specified interval.

function fallingList(list, speed) {
  for (let i = 0; i < list.length; i++) {
    let item = list[i];
    setInterval(function() {
      // code goes here
    }, speed);
  }
}

Inside the setInterval() method, we will use the querySelector() method to select the list element and the position property to set its vertical position. We will increment the position property by 10px each time the setInterval() method is executed. When the position property reaches the bottom of the page, we will stop the setInterval() method.

function fallingList(list, speed) {
  for (let i = 0; i < list.length; i++) {
    let item = list[i];
    let position = 0;
    setInterval(function() {
      let listElement = document.querySelector('#fallingList');
      listElement.style.position = position + 'px';
      position += 10;
      if (position > window.innerHeight) {
        clearInterval(this);
      }
    }, speed);
  }
}

Finally, we will call the fallingList() function and pass in the list and a speed value.

let listItems = document.querySelectorAll('#fallingList li');
fallingList(listItems, 50);

And that's it! We have now created a "falling list" effect in Javascript. You can experiment with different speeds and positions to create different effects. Have fun!