JS remove and add class timing function

Question

Below is some js that i have no idea how to modify to do what i want. Instead of onclick i need the js to activate after a delay of 40 seconds.

// retrieve the element
element = document.getElementById("ani");

// reset the transition by...
element.addEventListener("click", function(e){
e.preventDefault;

// -> removing the class
element.classList.remove("delay-1");

// -> triggering reflow /* The actual magic */
// without this it wouldn't work. Try uncommenting the line and the transition won't be         retriggered.
element.offsetWidth = element.offsetWidth;

// -> and re-adding the class
element.classList.add("delay-1");
}, false);

Just use a [timeout](https://developer.mozilla.org/en-US/docs/Web/API/Window.setTimeout). — gpgekko, Mar 26 '14 at 13:15

score 8 · Accepted Answer · answered Mar 26 '14 at 13:17

8

Use setTimeout to invoke a method/task after a specified number of milliseconds.

setTimeout(function() {
    //your code/function here
}, (40*1000)); //40 seconds

answered Mar 26 '14 at 13:17

lshettyl

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Do i remove: "element.addEventListener("click", function(e){" I have almost 0 js knowledge – user2810762 Mar 26 '14 at 13:31
1

Yes. And the `e.preventDefault()` – Andy Mar 26 '14 at 13:32
Got it working thanks alot! +1, final question can i get it to repeat every 40 seconds? I have multiple divs also do do this on but with same time. – user2810762 Mar 26 '14 at 13:48

score 0 · Answer 2 · edited May 23 '17 at 11:46

Use the function setTimeout.

as seen in e.g. How do I delay a function call for 5 seconds?

In your case:

// retrieve the element
element = document.getElementById("ani");

// reset the transition by...
element.addEventListener("click", function(e){
  e.preventDefault;

  //introducing a delay of 40 seconds.
  setTimeout(function() {
    // -> removing the class
    element.classList.remove("delay-1");

    // -> triggering reflow /* The actual magic */
    // without this it wouldn't work. Try uncommenting the line and the transition won't be         retriggered.
    element.offsetWidth = element.offsetWidth;

    // -> and re-adding the class
    element.classList.add("delay-1");
  }, 40 * 1000);
}, false);

score 0 · Answer 3 · answered Mar 26 '14 at 13:25

use setTimeout function:

setTimeout(function() {
    // retrieve the element
    element = document.getElementById("ani");

    // reset the transition by...
    element.addEventListener("click", function(e){
    e.preventDefault;

    // -> removing the class
    element.classList.remove("delay-1");

    // -> triggering reflow /* The actual magic */
    // without this it wouldn't work. Try uncommenting the line and the transition won't be retriggered.
    element.offsetWidth = element.offsetWidth;

    // -> and re-adding the class
    element.classList.add("delay-1");
    }, false);
}, 40000);

JS remove and add class timing function

3 Answers3