Invoke a function in Vue.js within the data section

Question

Invoke a function in Vue.js within the data section

Hey there! I'm diving into vue.js and I'm trying to figure out how to call a method in the data. Here's what I have so far:

data() {
        return {
            title: capitalizeFirstLetter('title'),
        };
    },

I also have a vue mixin that I've imported into my main.js file

Vue.mixin({
  methods: {
    capitalizeFirstLetter(str) {
        return str.charAt(0).toUpperCase() + str.slice(1);
    }    
  }
})

Unfortunately, when I try to call capitalizeFirstLetter in the data section, it doesn't seem to work. Is it even possible to call a method within the data section?

javascript vue.js vuejs2

Answer 1

Answer №1

Make sure to register the mixin within the component by using the mixin property.

Once done, you will be able to utilize the capitalizeFirstLetter method that is defined inside the mixin by calling this.capitalizeFirstLetter

Functional Example

const myMixin = {
  methods: {
    capitalizeFirstLetter(str) {
      return str.charAt(0).toUpperCase() + str.slice(1);
    }
  }
}

new Vue({
  el: "#app",
  mixins: [myMixin],
  data() {
    return {
      title: this.capitalizeFirstLetter('title'),
    };
  },
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app">
  {{ title }}
</div>

Answer 2

Make sure to register the mixin within the component by using the mixin property.

Once done, you will be able to utilize the capitalizeFirstLetter method that is defined inside the mixin by calling this.capitalizeFirstLetter

Functional Example

const myMixin = {
  methods: {
    capitalizeFirstLetter(str) {
      return str.charAt(0).toUpperCase() + str.slice(1);
    }
  }
}

new Vue({
  el: "#app",
  mixins: [myMixin],
  data() {
    return {
      title: this.capitalizeFirstLetter('title'),
    };
  },
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app">
  {{ title }}
</div>

Answer 3

Answer №2

Make sure to utilize the this

header: this.capitalizeFirstLetter('header'),

Answer 4

Make sure to utilize the this

header: this.capitalizeFirstLetter('header'),

Invoke a function in Vue.js within the data section

Answer №1

Answer №2

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