The difference between settimeout and setinterval

Difference

The Window object has two main timing methods, settimeout and Setinteval, whose syntax is essentially the same, but the completed functionality differs.

The SetTimeout method is the timer program, which is what to do after the time. Just finish it.

The SetInterval method is to indicate that an operation is repeated at a certain time interval.

If you implement the function of Setinerval with settimeout, you need to call yourself in the program you are executing. If you want to clear the counter you need to invoke different cleanup methods depending on the method you are using:

For example: Tttt=settimeout (' Northsnow () ', 1000);

Cleartimeout (TTTT);

Or:

Tttt=setinterval (' Northsnow () ', 1000);

Clearinteval (TTTT);

Give an example:

<div id= "Liujincai" ></div>
<input type= "button" name= "Start" value= "Start" >
<input type= "button" name= "Stop" value= "Stop" >
<script language= "JavaScript" >
var intvalue=1;
var timer2=null;
function Startshow ()
{
Liujincai.innerhtml=liujincai.innerhtml + "" + (Intvalue + +). toString ();
Timer2=window.settimeout ("Startshow ()", 2000);
}
function Stop ()
{
Window.cleartimeout (TIMER2);
}
</script>

Or:

<div id= "Liujincai" ></div>
<input type= "button" name= "Start" value= "Start" onclick= ' Timer2=window.setinterval ("startshow ()", 2000); Startshow (); ' >
<input type= "button" name= "Stop" value= "Stop" >
<script language= "JavaScript" >
var intvalue=1;
var timer2=null;
function Startshow ()
{
Liujincai.innerhtml=liujincai.innerhtml + "" + (Intvalue + +). toString ();
}
function Stop ()
{
Window.clearinterval (TIMER2);
}
</script>