What causes the Element to be null in Vue.js?

Could someone please clarify why the console.log output is showing as null, and provide guidance on how to resolve this issue?

<template v-for="day in getMonthLength()">

  <td>
    <input :id="day" type=number :value="dataa.value">
  </td>
 

  <td v-if="getLastTd(day)"><input type=number></td>
</template>

....

getLastTd(day) {
console.log(document.getElementById(day));
}

Answer №1

Key advice:

  • In Vue, it's best to utilize refs for accessing elements: https://v3.vuejs.org/guide/component-template-refs.html

  • If an element is showing as null, it may be due to a v-if condition that does not evaluate to true.

  • Make sure your v-if statements result in a boolean value. For example,

    v-if="person.age > 18"

  • If you are looking to execute code on a button click, consider using the @click event instead of embedding it within a v-if. Example:

    <button @click="getLastTd(day)">...

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