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Removing and printing items from the text box.

Engaged ,
Oct 26, 2020 Oct 26, 2020

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Greetings everyone!
After a few months of pausing in my studies, I decided to return and soon I ran into an error in the script I picked up on this one on page 31 of this manual: https://adobeindd.com/view/publications/a0207571-ff5b-4bbf-a540-07079bd21d75/92ra/publication-web-r... 

My question is: How to return only the items in the text box after deleting some? It prints all items even after deleting. Where's the error?
Thank you

 

 

 

 

 

var w = new Window ("dialog");
var array= ["one", "two", "three", "four"]
var lbx = w.add ("listbox", undefined, array, {multiselect: true});
var del = w.add ("button", undefined, "Delete selected items");

del.onClick = function () {
     // remember which line is selected
     var sel = lbx.selection[0].index;
     for (var i = lbx.selection.length-1; i > -1; i--)
     lbx.remove (lbx.selection[i]);
     // select a line after deleting one or more items
     if (sel > lbx.items.length-1)
     lbx.selection = lbx.items.length-1;
     else
     lbx.selection = sel;
}

var print = w.add ("button", undefined, "Print selected items");
    print.onClick = function () {
     for (var i = 0; i < array.length; i++)
     alert(array[i]);
}
w.show ();

 

 

 

 

 

 
TOPICS
Actions and scripting

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correct answers 1 Correct answer

People's Champ , Oct 26, 2020 Oct 26, 2020
It is necessary to remove elements from the array at the same time as removing the list elements.

Or don't use an array, but use lbx.items.
var print = w.add ("button", undefined, "Print selected items"); // why selected???
    print.onClick = function () {
     for (var i = 0; i < lbx.items.length; i++)
     alert(lbx.items[i].text);
}
 

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People's Champ ,
Oct 26, 2020 Oct 26, 2020

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It is necessary to remove elements from the array at the same time as removing the list elements.

Or don't use an array, but use lbx.items.
var print = w.add ("button", undefined, "Print selected items"); // why selected???
    print.onClick = function () {
     for (var i = 0; i < lbx.items.length; i++)
     alert(lbx.items[i].text);
}
 

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Engaged ,
Oct 26, 2020 Oct 26, 2020

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Great, it worked now! Thank you r-bin , I am happy to know that you still attend this community.

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Advocate ,
Jan 03, 2024 Jan 03, 2024

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How are items removed from an array. I've tried so many things but it simply won't work.

Why I test typeof(arrayName), it returns an object even though declared as array.  I believe estk tells an array to be an object.

But I can get it to work to remove an item of that array. 

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