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JavaScript

Posted by Unsubscribed User
Unsubscribed User
6,269 Points

Hi, setTimeout() is not working in my project

Hi, I'm trying to delay the changing of content inside my h2 and parapgraph elements and I'm using setTimeout function to achieve this. Here is the code from the JavaScript file:

const title = document.querySelector("h2");
const question = document.querySelector("p");

function changeQuestion(number, question) {
  title.textContent = "Question #" + number;
  question.textContent = question;
}


//The part below runs after pressing the button
    $("h2, p, .container-btn").fadeOut(500);
    setTimeout(
      changeQuestion("1", "What is?"), 1000
    );

The text content is changing immediately when the elements are fading out, what is wrong with this code? Thank you for the answer :)

1 Answer

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,967 Points

I don't see how the text content for your paragraph will change since your parameter question in the changeQuestion function has the same name used for the const declaration above const question = document.querySelector("p");

I changed it to: 

function changeQuestion(number, q) {
  title.textContent = "Question #" + number;
  question.textContent = q;
}

and then it changed.

As far as the immediate change here is a good read. Look for 'Pass a function, but don’t run it' where it is explained that by including the brackets your function is executed immediately and the result is passed to setTimeout. Since the function returns nothing, nothing is scheduled.

Use this instead:

setTimeout(changeQuestion, 1000, "1", "What is?");