Use Array.filter() filter out disabled validator

        
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" creationComplete="initApp()">

    <mx:Script>
        
            import mx.events.ValidationResultEvent;
            import mx.controls.Alert;
            import mx.validators.Validator;

            private var myValidators:Array;

            private function initApp():void {
                myValidators = [valid1, valid2].filter(filterDisabledValidators);
            }

            private function clickHandler():void {
                var errors:Array = Validator.validateAll(myValidators);
                if (errors.length == 0) {
                    Alert.show("No errors.", "SUCCESS");
                }
            }

            private function filterDisabledValidators(element:*, index:int, arr:Array):Boolean {
                return element.enabled;
            }
      
    </mx:Script>

    <mx:StringValidator id="valid1" source="{ti1}" property="text" minLength="4" maxLength="6" />
    <mx:StringValidator id="valid2" source="{ti2}" property="text" minLength="4" maxLength="6" enabled="false" />

    <mx:TextInput id="ti1" />
    <mx:TextInput id="ti2" />

    <mx:Button label="validate" click="clickHandler()" />

</mx:Application>

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Use Array.filter() filter out disabled validator : Validator « Development « Flex

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