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                <div id="app"></div>




                // add some different components globaly
Vue.component("test-comp0", {
  template: `<p>comp0</p>`

Vue.component("test-comp1", {
  template: `<p>comp1</p>`

Vue.component("test-comp2", {
  template: `<p>comp2</p>`

// sample app
new Vue({
  el: "#app",

  components: {
    // add a local component
    // check
    TestComp3: {
      template: `<p>comp3 locally registered component</p>`
    // you can also add some components from other files, using ES6 import or required.

  data() {
    return {
      componentIndex: 0

  computed: {
    componentName() {
      return "test-comp" + this.componentIndex;

  template: `
        Component: {{componentIndex}} <button @click="componentIndex=(++componentIndex)%4">change</button>
        <component :is="componentName"></component>