Tips for incorporating a time interval in every iteration of a for loop

Question

Tips for incorporating a time interval in every iteration of a for loop

I am attempting to display each word of a given text string on the screen at 60-second intervals. After some trial and error, here's what I have come up with:

let text = "Aliquam bibendum nulla et ligula vehicula semper. Nulla id posuere lorem, ac dignissim nunc. Quisque leo lorem, fringilla non ante ac, lobortis auctor leo. Fusce sit amet nibh vitae augue convallis iaculis eget ac erat.";

let mainId = document.getElementById("main");

function showWords() {
  // Display words one by one.

  let textArray = text.split(" ");
  for(let i = 0; i < poemArray.length; i++) {
    mainId.textContent = poemArray[i];
  }  
}

I understand that I need to utilize the setInterval() method in this scenario, but I am unsure about the correct way to implement it. I have attempted placing the entire for loop within the function parameter of setInterval() and even tried putting the code inside the for loop itself as the function parameter, but nothing seems to be working.

javascript for-loop

Answer 1

Answer №1

Implementing a basic queue using shift and setInterval()

let words = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer sed justo quis libero semper feugiat ac vel sapien.";

let container = document.getElementById("container");

function displayWords() {
  let wordsArray = words.split(" ");
  function showNextWord() {
    // get the first word from array and display it
    container.innerText = wordsArray.shift();
    // if there are still words left, set interval to display next one
    if (wordsArray.length) {
      setTimeout(showNextWord, 1000);
    }
  }
  showNextWord();
}

displayWords()

<div id="container"></div>

Answer 2

Implementing a basic queue using shift and setInterval()

let words = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer sed justo quis libero semper feugiat ac vel sapien.";

let container = document.getElementById("container");

function displayWords() {
  let wordsArray = words.split(" ");
  function showNextWord() {
    // get the first word from array and display it
    container.innerText = wordsArray.shift();
    // if there are still words left, set interval to display next one
    if (wordsArray.length) {
      setTimeout(showNextWord, 1000);
    }
  }
  showNextWord();
}

displayWords()

<div id="container"></div>

Answer 3

Answer №2

Create a new interval and assign it to a variable for easy clearing later on.

Use the .pop() method to remove the last element from an array and perform some action with it. Once the array is empty, stop the interval.

let myInterval = setInterval(() => {
    if (myArray.length > 0) {
        console.log(myArray.pop());
    } else {
        clearInterval(myInterval);
    }
}, 60000);

Answer 4

Create a new interval and assign it to a variable for easy clearing later on.

Use the .pop() method to remove the last element from an array and perform some action with it. Once the array is empty, stop the interval.

let myInterval = setInterval(() => {
    if (myArray.length > 0) {
        console.log(myArray.pop());
    } else {
        clearInterval(myInterval);
    }
}, 60000);

Answer 5

Answer №3

var mainId = document.getElementById("main");
var timeDelay = 1000; // in milliseconds
var text = "Greetings from a unique rewrite";

function displayText() {
    var textArray = text.split(" ");

    function ShowWord(item) {
      if (item < textArray.length) {
        mainId.innerText = textArray[item];
        setTimeout(ShowWord, timeDelay, item + 1);
      }
    }
    ShowWord(0);
}

displayText();

<div id="main"></div>

Answer 6

var mainId = document.getElementById("main");
var timeDelay = 1000; // in milliseconds
var text = "Greetings from a unique rewrite";

function displayText() {
    var textArray = text.split(" ");

    function ShowWord(item) {
      if (item < textArray.length) {
        mainId.innerText = textArray[item];
        setTimeout(ShowWord, timeDelay, item + 1);
      }
    }
    ShowWord(0);
}

displayText();

<div id="main"></div>

Answer 7

Answer №4

Your code contains a couple of errors that need to be addressed. To begin with, the variable `poemArray` should actually be named 'textArray'. Regardless, here is an alternative approach:

let text = "Aliquam bibendum nulla et ligula vehicula semper. Nulla id posuere lorem, ac dignissim nunc. Quisque leo lorem, fringilla non ante ac, lobortis auctor leo. Fusce sit amet nibh vitae augue convallis iaculis eget ac erat.";

let mainId = document.getElementById("main");
let textArray = text.split(" "); // Array of words

function displayWords() {
  if (textArray.length) { // If there are more words to display
    mainId.textContent += (textArray.shift() + " "); // Remove the first word and display it
    setInterval(displayWords, 1000); // Display the next word in 1 second
  }  
}
displayWords(); // Start the process by displaying the first word

Answer 8

Your code contains a couple of errors that need to be addressed. To begin with, the variable `poemArray` should actually be named 'textArray'. Regardless, here is an alternative approach:

let text = "Aliquam bibendum nulla et ligula vehicula semper. Nulla id posuere lorem, ac dignissim nunc. Quisque leo lorem, fringilla non ante ac, lobortis auctor leo. Fusce sit amet nibh vitae augue convallis iaculis eget ac erat.";

let mainId = document.getElementById("main");
let textArray = text.split(" "); // Array of words

function displayWords() {
  if (textArray.length) { // If there are more words to display
    mainId.textContent += (textArray.shift() + " "); // Remove the first word and display it
    setInterval(displayWords, 1000); // Display the next word in 1 second
  }  
}
displayWords(); // Start the process by displaying the first word

Answer 9

Answer №5

If you want to introduce a custom delay using async/await, you can achieve it with the following code snippet:

const customDelay = ms => new Promise(resolve => setTimeout(resolve, ms));

function updateContent = async () => {
  let index = 0;
  const totalItems = contentArray.length;
  
  while (index < totalItems) {
    mainText.textContent = contentArray[index];
    index++;
    await customDelay(5000);
  }
};

Answer 10

If you want to introduce a custom delay using async/await, you can achieve it with the following code snippet:

const customDelay = ms => new Promise(resolve => setTimeout(resolve, ms));

function updateContent = async () => {
  let index = 0;
  const totalItems = contentArray.length;
  
  while (index < totalItems) {
    mainText.textContent = contentArray[index];
    index++;
    await customDelay(5000);
  }
};

Tips for incorporating a time interval in every iteration of a for loop

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

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