How to add search parameter to the URL using AngularJS UI Router .go()?

This would be solution with ui-router – working example

  $stateProvider
    .state('MyState', {
      url: '/page-with-form?error',
      templateUrl: 'view.page-with-form.html',
      controller: 'MyCtrl',
    })

The navigation to this state could be like this:

  // href
  <a href="#/page-with-form">
  <a href="#/page-with-form?error=true">
  <a href="#/page-with-form?error=false">

  //ui-sref
  <a ui-sref="MyState({error:null})">
  <a ui-sref="MyState({error:true})">
  <a ui-sref="MyState({error:false})">

  // state.go() - in fact very similar to ui-sref directive
  $state.go('MyState', {error: null})
  $state.go('MyState', {error: true})
  $state.go('MyState', {error:false})

The documentation to url params:

• Query Parameters (small cite)

You can also specify parameters as query parameters, following a ‘?’:

url: "/contacts?myParam"
// will match to url of "/contacts?myParam=value"

Test it in action here