CODEWITHSUNDEEP
javascript
Freshblood
Freshblood

Reputation: 6431

Is it unneccesary to break setInterval if element is removed?

I use setInterval as below and until now i have used it exactly same way but if element is removed from Document this interval will continue to work unnecessarily. I haven't seen an example that handle this case yet.

Is it unnecessary to handle this case ? And if i have to handle it so what would be best way break interval ?

var element = $('bla');
setInterval(function () {
    element.text(new Date().toString());
}, 1000);

Upvotes: 2

Views: 355

Answers (2)

RobG
RobG

Reputation: 147413

Just a comment:

@hicurin, you might consider using an immediately invoked function expression (IIFE) instead:

(function() {
  var element = $('bla');
  var interval = setInterval(function () {
    element.text(new Date());

    // check if element is removed
    if(!$('bla').length && interval) {
      clearInterval(interval);
    }
  }, 1000);
}());

Upvotes: 3

Ringo
Ringo

Reputation: 3965

Try this:

var element = $('bla');
var int = setInterval(function () {
    element.text(new Date().toString());
    // check if element is removed
    if(!(element.length > 0) || element == undefined){
      clearInterval(int);
    }
}, 1000);

Upvotes: 1

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