Javascript setInterval function not defined - Stack Overflow

admin管理员组

文章数量:1302278

What is wrong with this code I seem to be geting an error that timer is not defined

var counter = setInterval("timer()",1000);

            function timer(){
                count = count-1;
                if(count <=0){
                    clearInterval(counter);
                    return;
                }
                document.getElementById("timer").innerHTML = count + " sec";
            }

What is wrong with this code I seem to be geting an error that timer is not defined

var counter = setInterval("timer()",1000);

            function timer(){
                count = count-1;
                if(count <=0){
                    clearInterval(counter);
                    return;
                }
                document.getElementById("timer").innerHTML = count + " sec";
            }

• javascript

Share Improve this question Follow asked Jul 11, 2012 at 17:30 Nistor AlexandruNistor Alexandru 5,39399 gold badges5050 silver badges7171 bronze badges 1

• You need to pass the function, not a string, as first param. – Gabriel Santos Commented Jul 11, 2012 at 17:34

Add a ment  | 

1 Answer 1

Sorted by: Reset to default 9

Don't pass a string to setInterval.

Your function is a local variable, which doesn't exist when setTimeout eval's the string in the global scope.

Instead, pass the function itself to setInterval:

var counter = setInterval(timer, 1000);

本文标签： Javascript setInterval function not definedStack Overflow