g.d*_*d.c 34
var counter = 0;
setInterval(function () {
++counter;
}, 1000);
Run Code Online (Sandbox Code Playgroud)
此外,如果您需要再次关闭它,这可以实现:
var counter = 0;
var myInterval = setInterval(function () {
++counter;
}, 1000);
// to stop the counter
clearInterval(myInterval);
Run Code Online (Sandbox Code Playgroud)