[Vuejs]-Vue: Ignore property until axios then

You could use the conditional ternary operator to check if the key is in the object first and only if it is, use it’s value, e.g.:

{{'title' in page_data ? page_data.title : '' }}

Otherwise, you could use Lodash’s _.get method, e.g.:

{{ _.get(page_data, 'title', '') }}

_.get is also useful for when you want to get a “deep” property, e.g.:

{{ _.get(page_data, 'article.title', '') }}