Simple syntax issue on variables

Hey, this should be a piece of cake for Javascipt coders. I'm a PHP guy myself Basically, I'm trying to use variables in a document.form.field.value call. The two variables are 'currentadset' and 'currentadloc', both of which have integer values.

setadlocs[currentadset][currentadloc] = document.setadlocations2.ad{currentadset}loc{currentadloc}.value;

Code (markup):

Thanks for the help!

 

setting up and accessing multidimensional arrays with dynamic keys can be a bit touch-and-go in javascript... you need to start thinking of lego blocks that you glue together

var currentadset = 4, currentadloc = 2; // whatever they are
var sub = [], setadlocs = []; // create empty arrays
// now assign them.
sub[currentadloc] = "foo"; // set the value of the second array (read below how to read this from an element's value)
setadlocs[currentadset] = sub; // adopt the array

// to use console, install firebug from www.getfirebug.com (for firefox). else, replace with alert()
console.log(setadlocs); // the whole thing with the undefined keys, this wont work on alert
console.log(setadlocs[4][2]); // outputs 'foo'
console.log(setadlocs[currentadset][currentadloc]); // outputs 'foo' also.

// static representation of this object would be:
var foo = {4: {2: "foo"}};

PHP:

unfortunately, as the keys are dynamic and cannot be used like this:
var foo = {currentadloc: "foo"}; // it won't evaluate the value of currentadloc but use the string instead.
... you need to be more creative and treat the object as an array

i hope this makes sense.

p.s. document.setadlocations2.ad{currentadset}loc{currentadloc}.value; -> bad form. you may need to give the field an id, then use:

document.getElementById("ad" + currentadset + "loc" + currentadloc).getAttribute("value") (or .value) instead.

 

Awesome! You had an extra " at the end of currentadloc with the last code there, but no big deal -- consider yourself repped