How can I get query parameters from a URL in Vue.js?

Without vue-route, split the URL

var vm = new Vue({
  ....
  created() {
    let uri = window.location.href.split('?');
    if(uri.length == 2) {
      let vars = uri[1].split('&');
      let getVars = {};
      let tmp = '';
      vars.forEach(function(v) {
        tmp = v.split('=');
        if(tmp.length == 2)
          getVars[tmp[0]] = tmp[1];
      });
      console.log(getVars);
      // do 
    }
  },
  updated() {
  },
....

Another solution https://developer.mozilla.org/en-US/docs/Web/API/HTMLHyperlinkElementUtils/search:

var vm = new Vue({
  ....
  created() {
    let uri = window.location.search.substring(1); 
    let params = new URLSearchParams(uri);
    console.log(params.get("var_name"));
  },
  updated() {
  },
....

Try this code

var vm = new Vue({
  created() {
    let urlParams = new URLSearchParams(window.location.search);
    console.log(urlParams.has('yourParam')); // true
    console.log(urlParams.get('yourParam')); // "MyParam"
  },
});

According to the docs of route object, you have access to a $route object from your components, which exposes what you need. In this case

//from your component
console.log(this.$route.query.test) // outputs 'yay'