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drop-down reset

msrich

Within a JavaScript function for a DCR, I want to reset a drop-down list to its original state: no selected value.

Does FormAPI provide any way to do this?
Is there any way other way to refer to this object so that I can set a 'selected' property directly?

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Comments

Migrateduser

Since you did not mention which version you're using, I will assume 6.5.

There is no direct way to reset a drop-down list to its initial value when the form was first loaded, but you could store a form variable to represent the field's initial value and then call the following code onFormInit:


function callOnInit() {
   var initialValue = IWDatacapture.getItem('/dropDownList').getValue();
   IWDatacapture.getItem('/hiddenField').setValue(initialValue);
}

This way, you have the value as a hidden field when/if you need it. To be more straight-forward, you could just store the value as a JS variable, but I'm not sure offhand what the scoping would look like since that value might get either manipulated or not recognized at all.

Dave

Current Environments:
(1,2) TS 6.5 on W2K3
(3) Vignette V7 Portal on Solaris 9

LooseCannon

I'm feeling generous


function resetDropDown() {
 var menuOptions = new Array();
 var object = IWDatacapture.getItem("/mydropdown");
 var len = object.getOptions().length;
 for ( n = 0; n <= len - 1; n++ ) {
  var label = object.getOptions().text;
  var value = object.getOptions().value;
  menuOptions = new Option(label, value, false, false);
 }
 object.setOptions(menuOptions);
}