Access vue instance/data inside filter method

Question

I\'m trying to access vue instance data inside filter function like this. JS:-

new Vue({
 data:{
  amount: 10,
  exchangeRate:50
 },
 el:\"#app\",
 filters:{         


        

Answer 1

Like this:

new Vue({
 data:{
  amount: 10,
  exchangeRate:60
 },
 el:"#app",
 filters:{
   currency: function(amount, exchange){
             console.log(exchange);
             //return amount * this.exchangeRate; <- can't do, must pass it in
            return amount * exchange;

   }
 }
})

 {{ amount | currency(exchangeRate)}}