If/then dropdown script

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Hi smart people. Need some help with writing a JavaScript if/then for a pdf form.

if the selection in dropdown11 is "No" than the selection in dropdown12 is "N/A"

and

if the selection in dropdown11 is "Yes" than selection in dropdown12 cannot be "N/A"

PDF forms

Thom Parker

Community Expert

There's a little complexity to this. One way to do this is to use two scripts, i.e., Validation scripts on both dropdowns.

Validation Script for "dropdown11"

var oFld12 = this.getField("dropdown12");
if(event.value == "No")
   oFld12.value = "N/A";
else if((event.value == "Yes") && (oFld12.value == "N/A"))
   oFld12 = "SomethingElse";

// Note, you'll need to provide a valid value for dropdown12

Validation Script for "dropdown12"

event.rc = !((this.getField("dropdown11").value == "Yes")&& (event.value == "N/A"));

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Thom Parker - Software Developer at PDFScriptingUse the Acrobat JavaScript Reference early and often

D

Dynamic_positivity9943Author

Participant

Thanks, that worked; however, if either box is edited after initial selection and breaks the "rule" it accepts the wrong answer. Anyway remedy for that?

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Thom Parker

Community Expert

Ok, a little more complex that I originally thought. First, the value of "dropdown11" hasn't changed by the time "dropdown12" gets the change from the "dropdown11" script. So there needs to be a blocking mechanism. And there is a condition missing from the "dropdown12" scripts.

Finally, both dropdowns need to be set to "commit immediately"

Here's the tested code:

Validation Script for "dropdown11"

var oFld12 = this.getField("dropdown12");
this.change = true;
if(event.value == "No")
   oFld12.value = "N/A";
else if((event.value == "Yes") && (oFld12.value == "N/A"))
   oFld12.value = "A";
this.change = false;

Validation Script for "dropdown12"

if(!this.change)
	event.rc = (this.getField("dropdown11").value == "No")&& (event.value == "N/A") || (this.getField("dropdown11").value == "Yes")&& (event.value != "N/A");

Note that the code for dropdown11 uses "A" as the default value for dropdown12. Change this to the default value on your form for dropdown12.

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Thom Parker - Software Developer at PDFScriptingUse the Acrobat JavaScript Reference early and often

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