Compare combobox text as a condition in another field's calculation.

Question

I'm trying to make a condition, if one of the 15 comboboxes have a certain listed text value selected, then a button will appear.

I tried to follow this example I found here on another question:

var t = document.getElementById("fTerminalType");

var selectedText = t.options[t.selectedIndex].text;

so the part of my code that uses it is:

for (i=1;i<16;i++) {

var t = this.getField("ComboBox"+i);

var s = t.options[t.selectedIndex].text;

if (s=="Specific Text") {

k.display = display.visible;

}

So `Combobox1` has "Specific Text" selected, but the `k` button does not display visible , and the rest of the code (a calculation) returns empty.

If I remove the internal code from `for () {}`, the rest of the calculation works, so the syntax error is specific to the text comparison part.

I tried `.value`,`.innerHTML`,`.export.value`,`.change` and `.changeEx` instead of `.text`, nothing worked.

I don't know if pdf forms have jQuery, I could try it but would need further help with the code either way.

Thanks.

George_Johnson · Accepted Answer

Yes i'm using export values, but that is generated when I populate the list of the combobox. Suppose the user types in the combobox, that is a text and not a value, isn't it? if they are always the same then no problems I guess.

So for my original calculation, following the syntax used in the test textbox that did return the content of the combobox:

for (i=1;i<16;i++) {

var t = this.getField("ComboBox"+i);

if (t.value=="Specific Text") {

k.display = display.visible;

}

The problem is even now the rest of the calculation is bugged and the result is blank... is there still anything wrong there?

The value property will return the export value of the selected item if it has one, otherwise it will return whatever is displayed, which is what you're calling text. SO if someone types something, you can retrieve it with the value property, although you really should use valueAsString instead. Check the JavaScript console (Ctrl+J) to see if any errors are reported.

If you need to get the display value from the export value, you can use the currentValueIndices field property to get the index of the selected item and use it with the getItemAt field method to get the display value. Some sample code is in the Acrobat JavaScript reference.

I don't notice anything wrong with your updated script, though you should add a break statement after the k.display statement since you don't need to keep looping once it's set. It's not clear if it's initialized somehow to display.hidden, which would make sense.

George_Johnson · Answer

You're mixing up browser-based JavaScript with PDF-based JavaScript, so it needs some revision. Are you saying that this code is included in a field's custom calculation script, or something else? It important to know when you want this code to be triggered.

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