Value from a js-file in a function

[hpl]

I have a function where I use a js-file. In this JS-file there is a variable named err2, which I want to use in the function. How do I get this value?

function tempValues() {
		var luftf1 = document.cond.luftf.value;
		var flow1 = parent.frames[1].navform.flow.value;
		var retur1 = parent.frames[1].navform.retur.value;
		var jordt1 = parent.frames[1].navform.jordt.value;
		var afst1 = parent.frames[1].navform.afst.value;
		var jordd1 = parent.frames[1].navform.jordd.value;
			
		temp_values();
			
			var err1 = 0;
			if (document.cond.system.value == "true" || document.cond.rortype.value == "false") {
				alert("Beregning af kondens kan kun udføres på enkeltrør til frie systemer.");
				window.parent.frames("right").location = "about:";
				err1 = 1;
			}
			
			var err3 = 0;
			if (isNaN(luftf1) || isNaN(flow1) || isNaN(retur1) || isNaN(jordt1) || isNaN(afst1) || isNaN(jordd1)) {
				alert("Indtast venligst en numerisk værdi.");
				err3 = 1;
			}
			if ((err2 == 0) && (err1 == 0) && (err3 == 0)) {
				return true;
			}
			else {
				window.parent.frames("right").location = "about:";
				return false;
			}	
}

The JS-file goes here

function temp_values() {
var err2 = 0;
		/* Værdier for St. 37 */
		if (parent.frames[1].navform.mat.options[mat].text == "St. 37.0 BW") {
			if (flow1*1 > 140 || flow1*1 < -60) {
				alert("Temperaturområdet for St. 37 er -60°C - 140°C.");
			window.parent.frames("right").location = "about:";
			err2 = 1;
			}
		}
		/* Værdier for St. 35 */
		if (parent.frames[1].navform.mat.options[mat].text == "St. 35.8 I") {
			if (flow1*1 > 140 || flow1*1 < -60) {
				alert("Temperaturområdet for St. 35 er -60°C - 140°C.");
			window.parent.frames("right").location = "about:";
			err2 = 1;
			}
		}
			
		/* Værdier for Pex */
		if (parent.frames[1].navform.mat.options[mat].text == "LR-Pex") {
			if (flow1*1 > 95 || flow1*1 < -60) {
				alert("Temperaturområdet for LR-Pex er -60°C - 95°C.");
			window.parent.frames("right").location = "about:";
			err2 = 1;
			}
		}
			
		/* Værdier for Cu-Flex */
		if (parent.frames[1].navform.mat.options[mat].text == "Cu-Flex") {
			if (flow1*1 > 130 || flow1*1 < -60) {
				alert("Temperaturområdet for Cu-Flex er -60°C - 130°C.");
			window.parent.frames("right").location = "about:";
			err2 = 1;
			}
		}
			
		/* Værdier for Steel-Flex */
		if (parent.frames[1].navform.mat.options[mat].text == "Steel-Flex") {
			if (flow1*1 > 130 || flow1*1 < -60) {
				alert("Temperaturområdet for Steel-Flex 35 er -60°C - 130°C.");
			window.parent.frames("right").location = "about:";
			err2 = 1;
			}
		}
			
		/* Værdier for AISI */
		if (parent.frames[1].navform.mat.options[mat].text == "AISI 316L") {
			if (flow1*1 > 140 || flow1*1 < -60) {
				alert("Temperaturområdet for AISI 316L er -60°C - 140°C.");
			window.parent.frames("right").location = "about:";
			err2 = 1;
			}
		}
	}

[sebs]

make err2 public,
don't declare it in your function!

[hpl]

Csn I do this by setting

public err2 = 0;

or...?

I have tried not declare err2, but then an error occurs saying err2 is undefined.

[sebs]

nope, you can't use public or private,
it depends where you declare them!
just make it the first thing

var err2;

tempValues();

that you will be able to use it in your function, but don't
re-declare it in your function!!

[hpl]

Sorry to disturb you, but something is going wrong.
I have now made a simple function with the variable err5.
If I set err5 = 15 in the function, and use this in the original function, it says that err5 is undefined. Maybe you can see, what's wrong?

function tester() {
var err5;
test();
if (err5==15){
alert("Defined");
}
else
{
alert("Undefined");
}
}

...
function test() {
	err5 = 15;
	
}

[sebs]

you still declare inside the function

var err5; //OUTSIDE YOUR FUNCTION

function tester() {
test();
if (err5==15){
alert("Defined");
}
else
{
alert("Undefined");
}
}

...
function test() {
	err5 = 15;
	
}

now this will work

[hpl]

Great, thanks a lot