Vue v-else-if

Vue provides a v-else-if directive that you can use with v-if analogous to using else if {} with if {}.

const app = Vue.createApp({
  data: () => ({ value: 1 }),
  template: `
  <div>
    <div>
      <h1 v-if="value > 0">Hello</h1>
      <h1 v-else-if="value > 1">There</h1>
      <h1 v-else-if="value > 2">World</h1>
    </div>
    <button @click="value++">Increment</button>
  </div>
  `
}).mount('#content');

v-else-if must follow a v-if. If you use v-else-if without v-if, Vue will print the following warning to the console.

[Vue warn]: Template compilation error: v-else/v-else-if has no adjacent v-if or v-else-if.

Below is an example of using v-else-if without v-if. If you open the console on this page, you'll see a "Template compilation error" warning from Vue.

const example = Vue.createApp({
  data: () => ({ value: 2 }),
  // BAD: this template uses v-else-if without an adjacent v-if
  template: `
  <div>
    <div>
      <h1 v-else-if="value > 1">There</h1>
      <h1 v-else-if="value > 2">World</h1>
      <h1 v-else-if="value > 3">Hello</h1>
    </div>
    <button @click="value++">Increment</button>
  </div>
  `
}).mount('#example');

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