Add event to input

[coshmos]

Hi.

I create number inputs by the way described below:

var quantityInput = this.createNumberInput('Quantity', 'QuantityLabel', 0, 0, 100);


createNumberInput: function (name, label, defaultValue, minimumValue, maximumValue) {
    var input = {};
    input.xtype = 'numberfield';
    input.fieldLabel = label;
    input.hiddenName = name + 'ID';
    input.name = this.inputPrefix + '.' + name;
    input.id = name;
    input.value = defaultValue;
    input.minValue = minimumValue;
    input.maxValue = maximumValue;


    return input;
}

How I could add event 'change' to the quantityInput?

[Tim Toady]

If you want to do it in your createNumberInput function you can specify a listeners object so that once it gets created it uses it.
http://docs.sencha.com/ext-js/4-1/#!...-cfg-listeners

Or after it is created or if you used Ext.create instead of an anonymous object you could call quantityInput.on( 'change', someFunction )
http://docs.sencha.com/ext-js/4-1/#!...able-method-on

Or if you were to use MVC you could control all your inputs from the controller
http://docs.sencha.com/ext-js/4-1/#!...method-control

[coshmos]

Could you provide an example of assigning listener, because I clearly don't understand what I should write, because I don't create numberInput by the standard method. So, should I write something like:

input.listeners = {change: {fn: function() alert('Changed');}};

If so, so the code doesn't work. And about the second method, I tried below code:

quantityInput.on('change', alert('Changed'););

But it fired everytime I opened page and JS console typed the error Object #<Object> has no method 'on'.

[coshmos]

Done. By adding listener. Thanks.

		quantityInput.listeners = {
			change: {
				fn: function (x, y, z) {
					alert('Changed');
				}
			}
		};