how to declare public variables?

[Bruce Lee]

how to declare a variable which i can use in another function.

function1()
{
var x;
}

i need to use "x" variable in another function asy function2

function2()
{
alert (x);
}

[ChrisHasenpflug]

Declare it outside the function.

[lilleman]

Hi,

It will also become global if you omit the var keyword.

[7stud]

In addition, you can use the window object's array notation: window["var_name"]. Summing up:

1)Declared outside any function:

var x = "hello";

function f1()
{
	alert(x);
}

function f2()
{
	alert (x);
}

f1();
f2();

2)Inside the function without the var keyword:

function f1()
{
	x= "hello"
	alert(x);
}

function f2()
{
	alert (x);
}

f1();
f2();

3)Using the window object:

function f1()
{
	window["x"] = "hello"
	alert(x);
}

function f2()
{
	alert (x);
}

f1();
f2();

In my opinion, 1 and 3 are preferable.

[stereofrog]

For the sake of completeness, you can also use "static member" notation.

function a () {
	a.x = 10;
}
function b() {
	alert(a.x)
}
a()
b()

"window" is not that good because less portable.