CODEWITHSUNDEEP
javascriptacrobat
TSB
TSB

Reputation: 141

TypeError: .substring is not a function

I'm running Acrobat Pro DC. I have a text field ("CC.CardNumber") with an Action/OnBlur event that runs the following script that produces this error. I've researched this for hours and can't see where my code is incorrect.

var fld = this.getField("CC.CardNumber");    
var first = fld.value.substring(0,1);    
fld.value = first;

TypeError: fld.value.substring is not a function 3:AcroForm:CC.CardNumber:Annot1:OnBlur:Action1Exception in line 1051 of function AFSimple_Calculate, script byteCodeTool

Upvotes: 2

Views: 8494

Answers (1)

Zalugo
Zalugo

Reputation: 19

if it is a card number then you need to convert it into a String.

var first = fld.value.toString().substring(0,1);

Upvotes: 1

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