How do I use Javascript to populate a text field based on a selection from a drop down box?

Question

Greetings,
I have virtually no experience with JavaScript and I am trying to figure out how to add some basic automation features to an Adobe form.  I have a drop down box called "Hospital_Name" that will contain approximately 7 possible selections.  When the user makes a selection, I would like to have the text field (called "Hospital_Address") below the drop down box populate with the corresponding address for the selection.  I have the "Hospital_Address" text field configured for multiple lines and would like the address to have a line break between the street address and the city/state/zip.
For example, if the user selected "Hospital 1", the text field would display:
123 Main St
Anytown, CA 12345
Any help or examples you can provide would be greatly appreciated.

Answer 1

You have the element names within the object within brackets.
Make sure your brackets are properly placed and matched.
// Place all pre-population data into a single data structure
var Location = {
"--Hospital--":{ line1: " ", line2: " " },
"Bellevue Medical Center":{ line1: "2500 BMC Drive", line2: "Bellevue, NE 68123" },
"CHI Bergan Mercy":{ line1: "7500 Mercy Road", line2: "Omaha, NE 68124" }, 
"CHI Immanuel":{ line1: "6901 N. 72nd Street", line2: "Omaha, NE 68122" }, 
"CHI Lakeside":{ line1: "16901 Lakeside Hills Court", line2: "Omaha, NE 68130" }, 
"CHI Midlands":{ line1: "11111 S. 84th Street", line2: "Papillion, NE 68046" },
"Creighton University Medical Center":{ line1: "601 N. 30th Street", line2: "Omaha, NE 68131" },
"Nebraska Medical Center":{ line1: "4400 Emile Drive", line2: "Omaha, NE 68105" }
// some debugging code to see location names;
console.show();console.clear():
for(I in Location) {
console.println(I);
// end debugging code;
function SetFieldValues(Hospital_Name) {
    this.getField("AddLine1").value = Location[Hospital_Name].line1;
    this.getField("AddLine2").value = Location[Hospital_Name].line2;
This is not a beginners task but requires a fair amount of knowledge about the structure of objects, defining strings, and structure of arrays.
Are you sure you have all the field names correctly spelled and capitalized?
Do you get any error in the JavaScript console?
Just trying the line that defines the "Location", I get the following error:
SyntaxError: invalid property id
1:Console:Exec
undefined
All the form field in a PDF are processed by using JavaScript and any error in any script will stop JavaScript processing.
It might help to have a link to the problem form.
Make sure your brackets are properly placed and matched.
// Place all pre-population data into a single data structure
var Location = {
"--Hospital--":{ line1: " ", line2: " " },
"Bellevue Medical Center":{ line1: "2500 BMC Drive", line2: "Bellevue, NE 68123" },
"CHI Bergan Mercy":{ line1: "7500 Mercy Road", line2: "Omaha, NE 68124" }, 
"CHI Immanuel":{ line1: "6901 N. 72nd Street", line2: "Omaha, NE 68122" }, 
"CHI Lakeside":{ line1: "16901 Lakeside Hills Court", line2: "Omaha, NE 68130" }, 
"CHI Midlands":{ line1: "11111 S. 84th Street", line2: "Papillion, NE 68046" },
"Creighton University Medical Center":{ line1: "601 N. 30th Street", line2: "Omaha, NE 68131" },
"Nebraska Medical Center":{ line1: "4400 Emile Drive", line2: "Omaha, NE 68105" }
function SetFieldValues(Hospital_Name) {
    this.getField("AddLine1").value = Location[Hospital_Name].line1;
    this.getField("AddLine2").value = Location[Hospital_Name].line2;