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Simonetos The Greek
Simonetos The Greek
Inspiring
July 9, 2019
Answered

Alert selected index of a dropdownlist at onChange event

  • July 9, 2019
  • 1 reply
  • 1166 views

I am trying to alert the selected index of a dropdownlist, for example 0 for Name 1, 1 for Name 2 etc, but instead of this I get an undefined value... Any idea what am I doing wrong?

var dropdownlist1_array = ["Name 1","Name 2","Name 3"]; 
var dropdownlist1 = panel1.add("dropdownlist", undefined, dropdownlist1_array); 
  dropdownlist1.selection = 0; 
  dropdownlist1.text = "Type:";
  dropdownlist1.onChange = function(){var index = dropdownlist1.selectedIndex; alert(index); };
This topic has been closed for replies.
Correct answer SuperMerlin
var panel1 = new Window("dialog","test");
var dropdownlist1_array = ["Name 1","Name 2","Name 3"]; 
var dropdownlist1 = panel1.add("dropdownlist", undefined, dropdownlist1_array);   
  dropdownlist1.selection = 0;   
  dropdownlist1.text = "Type:";  
  dropdownlist1.onChange = function(){ alert(this.selection.text + " Index = " + this.selection.index); };
  panel1.show();

1 reply

SuperMerlin
SuperMerlinCorrect answer
Inspiring
July 9, 2019
var panel1 = new Window("dialog","test");
var dropdownlist1_array = ["Name 1","Name 2","Name 3"]; 
var dropdownlist1 = panel1.add("dropdownlist", undefined, dropdownlist1_array);   
  dropdownlist1.selection = 0;   
  dropdownlist1.text = "Type:";  
  dropdownlist1.onChange = function(){ alert(this.selection.text + " Index = " + this.selection.index); };
  panel1.show();
    Simonetos The Greek
    Simonetos The GreekAuthor
    Inspiring
    July 9, 2019

    Thank you very much for the fast answer and for your time!!!

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