New World

콘솔 에러 main.js:12 [Vue warn]: Property or method "updateName" is not defined on the instance but referenced during render. Make sure that this property is reactive, either in the data option, or for class-based components, by initializing the property. See: https://v2.vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties. main.js:12 [Vue warn]: Invalid handler for event "click": got un..