how to to pass array[x] to a variable?

**ksquared3** · 02-07-2011, 02:41 AM

I want to pass array[x] to a variable so that I can use the variable in .innerHTML. I've researched and not found a reference.

Any help appreciated. Big thanks.

**Nile** · 02-07-2011, 02:48 AM

Do you mean how can you pass it in a function?

Code:

(function(value){
    document.getElementByid('element').innerHTML = value;
}(array[x]));

**ksquared3** · 02-07-2011, 02:55 AM

ok, let me show you my function that doesn't work:

Code:

function captionToDiv() {
document.getElementById("captionHere").innerHTML = "captionsList[caption]";
return false;
}

can we start here?

**Nile** · 02-07-2011, 02:58 AM

Code:

function captionToDiv() {
document.getElementById("captionHere").innerHTML = captionsList[caption];
return false;
}

Should work, aslong as you make sure captionsList is defined before you call captionToDiv(). If you want to pass it as a parameter:

Code:

function captionToDiv(val) {
document.getElementById("captionHere").innerHTML = val;
return false;
}
captionToDiv(captionsList[caption]);

**ksquared3** · 02-07-2011, 03:16 AM

The function to create and fill the array runs before I call captionToDiv().

Did you mean for me to use the code you have highlighted?

**Nile** · 02-07-2011, 03:20 AM

Ignore the highlighted, I was just pointing out the variable.

**ksquared3** · 02-07-2011, 03:24 AM

here is the computed code which returns error: missing ) after formal parameters. Pointing to line 1.

Code:

function captionToDiv(captionsList[caption]) {
document.getElementById("captionHere").innerHTML = "captionsList[caption]";
return false;
}

I don't see where ")" is needed.

**Nile** · 02-07-2011, 03:28 AM

No - change your code to:

Code:

function captionToDiv() {
document.getElementById("captionHere").innerHTML = captionsList[caption];
return false;
}

**ksquared3** · 02-07-2011, 03:46 AM

receiving error: captionsList not defined. It is defined in the <head> and also in the function that creates the array, and also here:

Code:

function captionToDiv() {
var captionsList;
document.getElementById("captionHere").innerHTML = captionsList[caption];
return false;
}

am I missing something?

**Nile** · 02-07-2011, 03:50 AM

Take the var captionList; away. Paste all of your code on your page here please.

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