Example of using the settimeout method and parameters in js

W3school for simple use

There is no parameter call,

Example:
Copy codeThe Code is as follows:
<Script type = "text/javascript">
Function timedMsg ()
{
Var a = "dd ";
Var t = setTimeout (function () {cao (a);}, 3000)
}
Function cao ()
{
Alert ();
}
</Script>
</Head>

<Input type = "button" value = "display the scheduled warning box" onClick = "timedMsg ()">

The problem I have now is that only the last one is passed back. Think about it.

I still don't quite understand.
Copy codeThe Code is as follows:
/* For (var I = 0; I <points. length; I ++ ){
AddGuiJi (points [I], value );
// Var t = setTimeout (function () {AddGuiJi (points [I], value) ;}, 2000 * I)
}*/

The cause of the above error is that I = 4 when the time is triggered, so although there are multiple, it is always the last one.

Solution
Copy codeThe Code is as follows:
Var timerr;
Function xunhuanlian (points, value ){
If (replayi <points. length ){
AddGuiJi (points [replayi], value );
Replayi ++;
Timerr = setTimeout (function () {xunhuanlian (points, value) ;}, 1000 );
}
Else {
Replayi = 0;
ClearTimeout (timerr );
}
/* For (var I = 0; I <points. length; I ++ ){
AddGuiJi (points [I], value );
// Var t = setTimeout (function () {AddGuiJi (points [I], value) ;}, 2000 * I)
}*/
}