[Vuejs]-Assign global variable on axios success

Try this

getshop() {
  this.$http.get('http://localhost:3000/api/shopestablishments') 
    .then(function (response) {
      // Save response.data in variable `x`         
      var x = response.data;
      // Call second function with response.data
      this.yourFunction(x);
    })
}