this.filterText undefined

[johan-Rm]

trafficstars

I use Nuxtjs, I do not have access to the filterText data variable, can someone help me ?

filterByText: function(itemElem) { console.log(this.filterText) // undefined }

complete code https://jsfiddle.net/johanrm/h2ekjcy4/2

thanks in advance, if I'm not clear tell me

[johan-Rm]

answer found here => https://stackoverflow.com/questions/55782318/i-use-nuxtjs-i-do-not-have-access-to-the-filtertext-data-variable