setTimeout("count()",1000) function call.

[chartahir]

setTimeout("count()",1000);

setTimeout function can be used to call a function without any parameters easily, but is there ant way i can pass a parameter to function count inside function setTimeout ???

[Kravvitz]

Like this?

setTimeout("count('a string parameter',99)",1000);

[chartahir]

yes thats like what i want but,when passing parameters to count through setTimeout the parameters are received as constant.

Can i pass variables ?

[7stud]

"count(" + someVar + ")"

It's gonna be a string on the other side of the worm hole.

[Pepejeria]

You can also pass a function (recommended) instead of a String as the first argument

window.setTimeout(function() {
    count(someVar);
}, 1000);

[Kravvitz]

"count(" + someVar + ")"

It's gonna be a string on the other side of the worm hole.

Really? If I pass a string like that I get errors. That would work for numbers, but they aren't passed as strings.

You can also pass a function (recommended) instead of a String as the first argument

That doesn't work in IE5/Mac or Safari 1.0 though.

Browsers other than IE and Safari 1.0 support more than 2 arguments to setTimeout. After the first two, the others will be passed as arguments to the function specified in the first argument, if you just pass a reference to a function (not a string or a function call) as the first argument.

[Pepejeria]

Ah, Safari 1 fails that, crap. IE 5/Mac is pretty dead though. Thank god. RIP.

[kyberfabrikken]

If safari1 support is a must, you could push the function to a stack, with something like this:

var Callback = {
  stack: [],
  setTimeout: function(fn, timeout) {
    var id = stack.length;
    Callback.stack[id] = fn;
    return window.setTimeout("Callback.__call("+id+")", timeout);
  },
  __call: function(id) {
    var fn = Callback.stack[id];
    Callback.stack[id] = null;
    fn();
  }
};
Callback.setTimeout(function() {
    count(someVar);
}, 1000);

I wouldn't care too much about archaic browsers though.

[Kravvitz]

That's a very interesting alternative, kyberfabrikken. I hadn't thought of doing that. Did you come up with that yourself?

Ah, Safari 1 fails that, crap.

Safari 1.2+ supports it though. (I don't know about 1.1.)

[kyberfabrikken]

Did you come up with that yourself?

I think I did.

[7stud]

Really? If I pass a string like that I get errors. That would work for numbers, but they aren't passed as strings.

You're right of course. I left out the "internal" quote marks that make it work:

"count('" + someVar + "')"

The way that works is if you have:

var someVar = 10;

then the value for someVar is substituted in the code, giving you:

count('   +  10  +  ')

then the concatenation happens, forming the string:

count('10')

Forcing js to evaluate the string immediately serves to freeze dry the current value of someVar into the setTimeout().

function show(str)
{
	alert(str);
}

var data1 = "a string";
var data2 = 10;
setTimeout("show('" + data1 + "')", 1000);
setTimeout("show('" + data2 + "')", 2000);

//The following execute before the setTimeout():
data1 = "a different value";
data2 = 156;

Compare to:

function show(str)
{
	alert(str);
}

var data1 = "a string";
var data2 = 10;
setTimeout("show(data1)", 1000);
setTimeout("show(data2)", 2000);
data1 = "a different value";
data2 = 156;