Ajax Bar     

Ajax Bar is a component which displays a loading bar (like Youtube) whenever an Ajax call (regardless of Ajax library used) is in progress. It can be manually triggered as well.

For a more convenient usage, you may want to check LoadingBar Quasar plugin. This page describes how the QAjaxBar component works should you want to directly use it yourself. Otherwise, if you want Quasar to take care of setting everything up, head to the LoadingBar page.

Installation

Edit /quasar.conf.js:

framework: {
  components: ['QAjaxBar']
}

Basic Usage

As long as this component is rendered by Vue it will capture all Ajax calls.

<q-ajax-bar />

The best way to use it is to place it in your App’s root component (App.vue if you are using the default Quasar template):

<template>
  <div id="q-app">
    <router-view></router-view>
    <q-ajax-bar />
  </div>
</template>

IMPORTANT
Do not simultaneously use more than one Ajax Bar component in your App.

Vue Properties

Vue Methods

Use this only if you want to also trigger it manually. Ajax calls trigger these methods automatically.

Vue Events

If multiple events are captured by Ajax Bar simultaneously, @start and @stop will still be triggered only once: when loading bar starts showing up and when it becomes hidden.

How start/stop works

Each Ajax call makes a start() call when it is triggered. When it ends, it calls stop(). So yes, if you also manually trigger Ajax Bar you must call start() each time a new event is starting and stop() each time an event finished. Ajax Bar knows to handle multiple events simultaneously.