- There's another method you have access to on the Redux store object is
store.subscribe(). What this does is basically subscribe a function to your store that simply logs a message every time an action is received and the store is updated. - FreeCodeCamp Code:
const ADD = 'ADD'; const reducer = (state = 0, action) => { switch(action.type) { case ADD: return state + 1; default: return state; } }; const store = Redux.createStore(reducer); // Global count variable: let count = 0; // Change code below this line // Change code above this line store.dispatch({type: ADD}); console.log(count); store.dispatch({type: ADD}); console.log(count); store.dispatch({type: ADD}); console.log(count); Basically what they want us to do is to write a callback function that increments the global variable count every time the store receives an action, and pass this function in to the store.subscribe() method.
Answer:
let count = 0; store.subscribe(function() { count += 1 }) 
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