The code below prints only the event contents, how do I make that print WheatherData.value number? I am coming from java and I am used to do it this way.
const Event = (time, place) => {
var _time = time
var _place = place
return {
getTime() {
return _time
},
getPlace() {
return _place
},
updateTime() {
_time = new Date(Date.now())
},
toString() {
return 'Time: ' + _time + '\nPlace: ' + _place
}
}
}
const WeatherData = (value, time, place) => {
var _event = Event(time, place)
var _value = value
const getValue = () => { return _value }
const toString = () => { return '\nValue: ' + _value + _event.toString() }
return Object.assign({ getValue, toString }, _event)
}
const wd = WeatherData(10.1, new Date(Date.now()), 'Chisinau, Moldova')
console.log(wd.toString())
//Time: Sat Sep 18 2021 08:49:10 GMT+0200 (Central European Summer Time)
//Place: Chisinau, Moldova
// no value printedreturn Object.assign({ getValue, toString }, _event)
The line above causing the problem. When you assign _event object to { getValue, toString } object you are simply overriding toString method of WeatherData function. Instead, just return { getValue, toString } from your WeatherData function, like below;
const WeatherData = (value, time, place) => {
var _event = Event(time, place);
var _value = value
const getValue = () => { return _value }
const toString = () => { return '\nValue: ' + _value + '\n' + _event.toString() }
return { getValue, toString }
}
return Object.assign({}, _event, { getValue, setValue, toString })
this works for me, is it the right way to do that? I overwrite the event's toString method this way