title: v-model on input that dynamically changes value by other script ?
body: <p>I have two input that store lat and lng from google map script, if the user changes the marker's position => these two inputs get the lat and lng that the user pecked, so I wanna get the value of these two inputs, I tried v-model but it didnt work I actually noticed that the v-model will be fired only if I changed the value of these input by typing or pasting something in. 
  Is there a way that I can get the value of these inputs (like on-change) to my Vue instance?   </p>