Properties with notify:true
also fires an event
<link rel="import" href="../bower_components/paper-input/paper-input.html">
<dom-module id="property-change-event">
<template>
<style></style>
<paper-input id="input" label="type here to fire value change event" on-value-changed='changeFired'></paper-input>
</template>
</dom-module>
<script>
Polymer({
is:'property-change-event',
changeFired:function(e){
if(e.detail.value!="")
alert("new value is: "+e.detail.value);
}
})
</script>