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I wrote a function and wanted it to display 1 to 10 after every second in a span. While debugging the program I wanted to log the results to a console and saw different results for firefox and chrome, Chrome also changes the results ater every page refresh.

Below is my function:

function log10()  {
        for(var i =0;i<=10;i++)
        {
            console.log(setInterval(function() {
                $("span").text(i)
            },6000));
        }
}

FIREFOX RESULT LOGS: 2 to 11 (via firebug) and remains same on reload.

CHROME SHOWS: 1 to 11 (via built in debugger) And after every reload it shows 22 to 22 / 23 to 33 / 34 to 34 et-al

I am calling function via <body onload = log10();>

Does anyone know whats happening. I am more Interesting in knowing how to log 1 to 10 in span as per my code $("span").text(i)

I wrote a function and wanted it to display 1 to 10 after every second in a span. While debugging the program I wanted to log the results to a console and saw different results for firefox and chrome, Chrome also changes the results ater every page refresh.

Below is my function:

function log10()  {
        for(var i =0;i<=10;i++)
        {
            console.log(setInterval(function() {
                $("span").text(i)
            },6000));
        }
}

FIREFOX RESULT LOGS: 2 to 11 (via firebug) and remains same on reload.

CHROME SHOWS: 1 to 11 (via built in debugger) And after every reload it shows 22 to 22 / 23 to 33 / 34 to 34 et-al

I am calling function via <body onload = log10();>

Does anyone know whats happening. I am more Interesting in knowing how to log 1 to 10 in span as per my code $("span").text(i)

  • javascript
  • jquery
  • firefox
  • browser
  • setinterval
Share Improve this question edited Oct 24, 2012 at 17:43 Michal Klouda 14.5k7 gold badges56 silver badges79 bronze badges asked Oct 24, 2012 at 17:41 MikeMike 3,40811 gold badges47 silver badges80 bronze badges 1
  • The return from setInterval returns a JavaScript Object containing all informations needed by an animation (like the this object, the callback function, the length, the frame-rate).. Src: developer.mozilla/en-US/docs/DOM/window.setInterval – Jasper Commented Oct 24, 2012 at 17:44
Add a ment  | 

3 Answers 3

Reset to default 3

http://jsfiddle/8sdu5/2/

function log10()  {
    var counter = 1;
    var evt = setInterval(function() {
        $("span").text(counter++);
        if(counter > 10)
            clearInterval(evt);
    }, 1000);
}

You don't need a loop, the setInterval will "loop" on its own, you just have to have a condition to tell it when to stop.

You are not saving context, using an anonymous function for saving context. You should use setTimeout instead of setInterval, as setInterval will not stop until you stop it (using clearInterval or by unloading the page). At the other hand setTimeout will run only once for each loop with delay of 6000ms. jsfiddle

function log10()  {
    var i = 0;
    function repeat(){
        if(i > 10 ) return;
        setTimeout(repeat, 600);
        $("span").text(i);
        i++;
    } 
    repeat();
}

You are running into variable binding issues. A different way to solve them is to pass in the number to be shown bined with recursion and setTimeout:

Working jsFidle example

// recursive function
function log10(theNumber)  {
        if (theNumber <= 10)
        {
            setTimeout(function() {
                $("span").text(theNumber);
                log10(++theNumber);
            },1000);
        }
}

// kick things off
log10(0);

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