Ways to cease a setInterval after a specified duration or a specific number of iterations

Question

Ways to cease a setInterval after a specified duration or a specific number of iterations

I have successfully implemented a jQuery code for creating a loop of "changing words" by referring to the solution provided in this Stack Overflow answer: jQuery: Find word and change every few seconds

My question is, how can I stop this loop after a certain amount of time? For example, after 60 seconds or once it has cycled through all the words in the loop?

(function() {

  // List of words to cycle through:
  var words = [
      'Teacher',
      'Principal',
      'Guidance counselor',
      'Teacher',
      'School nurse',
      'Teacher',
      'School psychologist',
      'Administrator'
    ],
    i = 0;

  setInterval(function() {
    $('#dennaText').fadeOut(function() {
      $(this).html(words[i = (i + 1) % words.length]).fadeIn();
    });
    // 2 seconds
  }, 2000);

})();

javascript loops

Answer 1

Answer №1

If you need to halt the process after it has run a specific number of times, simply implement a counter within the interval function. Once the counter reaches the desired number, clear the interval.

For example:

var timesRun = 0;
var interval = setInterval(function(){
    timesRun += 1;
    if(timesRun === 60){
        clearInterval(interval);
    }
    // Carry out desired actions here.
}, 2000);

If you wish to stop the process after a certain amount of time has passed (e.g. 1 minute), you can use the following approach:

var startTime = new Date().getTime();
var interval = setInterval(function(){
    if(new Date().getTime() - startTime > 60000){
        clearInterval(interval);
        return;
    }
    // Carry out desired actions here.
}, 2000);

Answer 2

If you need to halt the process after it has run a specific number of times, simply implement a counter within the interval function. Once the counter reaches the desired number, clear the interval.

For example:

var timesRun = 0;
var interval = setInterval(function(){
    timesRun += 1;
    if(timesRun === 60){
        clearInterval(interval);
    }
    // Carry out desired actions here.
}, 2000);

If you wish to stop the process after a certain amount of time has passed (e.g. 1 minute), you can use the following approach:

var startTime = new Date().getTime();
var interval = setInterval(function(){
    if(new Date().getTime() - startTime > 60000){
        clearInterval(interval);
        return;
    }
    // Carry out desired actions here.
}, 2000);

Answer 3

Answer №2

To clear the interval, utilize the clearInterval function. Insert the interval id obtained from the setInterval method into the function.

For instance:

var intervalId = setInterval(function(){
                    ....
                 }, 1000);

To cancel the above interval, use:

clearInterval(intervalId);

You can modify your code as shown below.

(function(){

    // List your words here:
    var words = [
        'Teacher',
        'Principal',
        'Guidance Counselor',
        'Teacher',
        'School Nurse',
        'Teacher',
        'School Psychologist',
        'Administrator'
        ], i = 0;

    var intervalId = setInterval(function(){
        $('#dennaText').fadeOut(function(){
            $(this).html(words[i=(i+1)%words.length]).fadeIn();
            if(i == words.length){//All the words are displayed clear interval
                 clearInterval(intervalId);
            }
        });
       // 2 seconds
    }, 2000);

})();

Answer 4

To clear the interval, utilize the clearInterval function. Insert the interval id obtained from the setInterval method into the function.

For instance:

var intervalId = setInterval(function(){
                    ....
                 }, 1000);

To cancel the above interval, use:

clearInterval(intervalId);

You can modify your code as shown below.

(function(){

    // List your words here:
    var words = [
        'Teacher',
        'Principal',
        'Guidance Counselor',
        'Teacher',
        'School Nurse',
        'Teacher',
        'School Psychologist',
        'Administrator'
        ], i = 0;

    var intervalId = setInterval(function(){
        $('#dennaText').fadeOut(function(){
            $(this).html(words[i=(i+1)%words.length]).fadeIn();
            if(i == words.length){//All the words are displayed clear interval
                 clearInterval(intervalId);
            }
        });
       // 2 seconds
    }, 2000);

})();

Answer 5

Answer №3

The easiest fix you can implement:

let intervalId =   setInterval(function() {
    $('#dennaText').fadeOut(function() {
        $(this).html(words[i = (i + 1) % words.length]).fadeIn();
    });
}, 2000); // execute every 2 seconds

setTimeout(function(){
    clearInterval(intervalId);
},10000) // end execution after 10 seconds

Answer 6

The easiest fix you can implement:

let intervalId =   setInterval(function() {
    $('#dennaText').fadeOut(function() {
        $(this).html(words[i = (i + 1) % words.length]).fadeIn();
    });
}, 2000); // execute every 2 seconds

setTimeout(function(){
    clearInterval(intervalId);
},10000) // end execution after 10 seconds

Answer 7

Answer №4

Consider utilizing a recursive setTimeout() function instead of setInterval() to prevent any potential race conditions.

let count = 1;
(function fadeInterval(){  
    $('#textElement').fadeOut(function(){
        $(this).html(words[index=(index+1)%words.length]).fadeIn('fast',function(){
            if (count < 30){
                count += 1;
                setTimeout(fadeInterval, 2000);
            }
        });
    });
}());

Answer 8

Consider utilizing a recursive setTimeout() function instead of setInterval() to prevent any potential race conditions.

let count = 1;
(function fadeInterval(){  
    $('#textElement').fadeOut(function(){
        $(this).html(words[index=(index+1)%words.length]).fadeIn('fast',function(){
            if (count < 30){
                count += 1;
                setTimeout(fadeInterval, 2000);
            }
        });
    });
}());

Answer 9

Answer №5

Consider implementing setTimeout for better control:

(function example(){ // Create a self-invoking function to encapsulate the code
  count = 20; // Number of iterations
  (function iterate(){
    // Perform necessary actions, such as displaying the current count
    document.body.innerHTML = count;

    if( --count ) // 20 iterations * 100ms = 2 seconds
      setTimeout(iterate, 100);
  })();
})();

Answer 10

Consider implementing setTimeout for better control:

(function example(){ // Create a self-invoking function to encapsulate the code
  count = 20; // Number of iterations
  (function iterate(){
    // Perform necessary actions, such as displaying the current count
    document.body.innerHTML = count;

    if( --count ) // 20 iterations * 100ms = 2 seconds
      setTimeout(iterate, 100);
  })();
})();

Answer 11

Answer №6

If you're using VueJs and need to delete a div element after a certain amount of time, here is a code snippet that could be useful for you.

export default {
  name: "Home",
  components: {},
  data() {
    return {
      removeAlert: false,
    };
  },
  methods: {
    removeAlertF() {
      let interval = window.setInterval(() => {
        this.removeAlert = true;
        console.log("done");
        if(true){
          window.clearInterval(interval);
        }
      }, 3000);
    },
  },
  mounted() {
    this.loadData();
    this.removeAlertF();
  },
};

<style>
.remove-alert {
  display: none;
}
</style>

 
 <div
        :class="removeAlert ? 'remove-alert' : ''"
        role="alert"
      >
        Data loaded successfully
      </div>

Answer 12

If you're using VueJs and need to delete a div element after a certain amount of time, here is a code snippet that could be useful for you.

export default {
  name: "Home",
  components: {},
  data() {
    return {
      removeAlert: false,
    };
  },
  methods: {
    removeAlertF() {
      let interval = window.setInterval(() => {
        this.removeAlert = true;
        console.log("done");
        if(true){
          window.clearInterval(interval);
        }
      }, 3000);
    },
  },
  mounted() {
    this.loadData();
    this.removeAlertF();
  },
};

<style>
.remove-alert {
  display: none;
}
</style>

 
 <div
        :class="removeAlert ? 'remove-alert' : ''"
        role="alert"
      >
        Data loaded successfully
      </div>

Ways to cease a setInterval after a specified duration or a specific number of iterations

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

Answer №6

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