Establish the geolocation within the data object once Vue.js has been mounted

Question

Establish the geolocation within the data object once Vue.js has been mounted

Just dipping my toes into the world of VueJS. I've got a side project in the works that hinges on fetching User's Geolocation Data right after the main component has mounted.

My code snippet is as follows:

var app = new Vue({
  el: '#app', 
  data: {
    position: null
  },
  mounted: function() {
    if(navigator.geolocation){
       navigator.geolocation.getCurrentPosition(function(position){
        this.position = position.coords;
      })
    }

  }
});

I've been attempting to update the position in the data object with the current geolocation upon mounting, however, it doesn't seem to be working. Am I overlooking something?

javascript geolocation vue.js

Answer 1

Answer №1

There seems to be a context issue here, where the navigator inside is bound to the wrong context. This means that when you use this.position, the this keyword does not refer to the Vue object.

To solve this problem, you can make use of arrow functions:

  mounted: function() {
    if(navigator.geolocation){
       navigator.geolocation.getCurrentPosition(position => {
        this.position = position.coords;
      })
    }
  }

Alternatively, you can declare a variable before the navigator object to hold the correct context:

  mounted: function() {
    if(navigator.geolocation) {
       var self = this;
       navigator.geolocation.getCurrentPosition(function(position){
        self.position = position.coords;
      })
    }
  }

By the way, just so you know - the position.coords will return an Object with properties like latitude and longitude. If you want to access one of them specifically, you'll need to point to it like this:

self.position = position.coords.latitude;

Answer 2

There seems to be a context issue here, where the navigator inside is bound to the wrong context. This means that when you use this.position, the this keyword does not refer to the Vue object.

To solve this problem, you can make use of arrow functions:

  mounted: function() {
    if(navigator.geolocation){
       navigator.geolocation.getCurrentPosition(position => {
        this.position = position.coords;
      })
    }
  }

Alternatively, you can declare a variable before the navigator object to hold the correct context:

  mounted: function() {
    if(navigator.geolocation) {
       var self = this;
       navigator.geolocation.getCurrentPosition(function(position){
        self.position = position.coords;
      })
    }
  }

By the way, just so you know - the position.coords will return an Object with properties like latitude and longitude. If you want to access one of them specifically, you'll need to point to it like this:

self.position = position.coords.latitude;

Establish the geolocation within the data object once Vue.js has been mounted

Answer №1

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