What is the best way to pass a mask without using a plug-in when dealing with an input value in Vue.js?

As someone who has previously implemented the function using pure JavaScript, I am now faced with the challenge of incorporating it into vue.js and determining which lifecycle hooks are best suited for this task. This issue arises as I am a beginner preparing for my first job test, and currently, I find myself stuck at this juncture.

The main challenge at hand is to apply a telephone mask on the input field, in the format (xx)xxxxx-xxxx. Additionally, another obstacle is to accomplish all of this within a single HTML file, while working with Vue.js v2.x and Vuetify.

This is the current setup for the input field :

<v-text-field
  id="phone"
  onkeypress="mask(this, mphone)"
  onblur="mask(this, mphone)"
  v-model="numero"
  maxlength="15"
  label="Número com DDD"
  :rules="rulesNum"
  required
>
</v-text-field>

And here are the associated functions :

function mask(object) {
          setTimeout(function() {
              var valueInput = mphone(object.value);
              if (valueInput != object.value) {
                object.value = valueInput;
              }
            }, 1);
          }

      function  mphone(valueInput) {
            var regex = valueInput.replace(/\D/g, "");
            regex = regex.replace(/^0/, "");
            if (regex.length > 10) {
              regex = regex.replace(/^(\d\d)(\d{5})(\d{4}).*/, "($1) $2-$3");
            } else if (regex.length > 5) {
              regex = regex.replace(/^(\d\d)(\d{4})(\d{0,4}).*/, "($1) $2-$3");
            } else if (regex.length > 2) {
              regex = regex.replace(/(\d)(\d{4})$/,"$1-$2");
            } else {
              regex = regex.replace(/^(\d*)/, "($1");
            }
            return regex;
          }

Answer №1

In order to transform these functions into a vue structure, you simply need to update the html element by changing onkeypress and onblur to @keypress and @blur. Then, move your existing functions inside the methods section of the vue structure like this:

methods: {
    formatData: function(data) {
        //place your code here
    },
    validateInput: function(inputValue) {
        //add your code here
    }
}

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