How to perform an action every couple of seconds?
Can someone quick开发者_开发技巧ly and simply explain to me how to perform an action every couple of seconds using
var timeOut = setTimeout(FunctionName, 5000);
I want to run a function every 5 seconds.
As you asked for a method using setTimeout:
function doStuff() {
console.log("hello!");
setTimeout(doStuff, 5000);
}
setTimeout(doStuff, 5000);
But it would probably be better to use setInterval:
function doStuff() {
console.log("hello!");
}
setInterval(doStuff, 5000);
Just put setTimeout at the end inside your function, with a call to itself - like a delayed tail-recursion.
Use setInterval:
var timeOut = setInterval(nextNotice, 5000);
var myFunction = function() {
//Do stuff
AnotherFunction();
};
var timeOut = setInterval(myFunction, 2000);
you can do something like:
$(document).ready(function ()
{
setTimeout(nextNotice, 5000);
}
function nextNotice()
{
// do stuff
setTimeout(nextNotice, 5000);
}
In the example below, when a button is clicked, the input field will start to count (for ever), starting at 0.
<html>
<head>
<script type="text/javascript">
var c = 0;
var t;
var timer_is_on = false;
function timedCount() {
document.getElementById('txt').value = c;
c = c + 1;
t = setTimeout(timedCount, 1000);
}
function doTimer() {
if (!timer_is_on) {
timer_is_on = true;
timedCount();
}
}
</script>
</head>
<body>
<form>
<input type="button" value="Start count!" onclick="doTimer()">
<input type="text" id="txt" />
</form>
</body>
</html>
加载中,请稍侯......
精彩评论