JavaScript-在setTimeout内设置setTimeout以停止

Question

I have this code -

function example() {

    var i = 0;

    function add() {
        i++;
    }

    setTimeout(function doSomething() {
        add();
        setTimeout(doSomething, 1000);
    }, 1000);
}

Now basically I want by a pressed on a button to make the "setTimeout" to stop - any ideas how may i do that? thanks for any kind of help

Answer 1

You need not to call setTimeout inside setTimeout . You can use setInterval , it will call for every second. see below code to stop interval using clearInterval()

var timeInterval = '';
function example() {

    var i = 0;

    function add() {
        i++;
    }

    //store time Interval  using variable
    timeInterval = setInterval(function() {
        add();
        //setTimeout(doSomething, 1000);-- remove this
    }, 1000);
}

function buttonClick()
{
  //clear time out
  window.clearInterval(timeInterval);
}

Answer 2

You need to use clearTimeout:

var timer = setTimeout(doSomething, 1000); //store setTimeout in a variable
//now when you need clear it:
clearTimeout(timer)

Answer 3

To clear the the delay caused by "setTimeout" use "clearTimeout" function. Check Here