What steps can I take to ensure that the @blur event functions correctly in Nuxtjs?

Question

What steps can I take to ensure that the @blur event functions correctly in Nuxtjs?

I'm attempting to implement a function that validates an input field when it loses focus in nuxtjs. Strangely, the function doesn't trigger when I move out of the input field, but does trigger when I move into another input field and start typing.

<div class="control">
  <input class="input" type="text" ref="email" @blur="validateMail()" v-model="email_p" name="email" />
</div>

This is the function call

 methods: {
        validateMail(){
            let value = this.$refs.email.value
            let mailformat = /^(([^<>()[\]\\.,;:\s@"]+(\.[^<>()[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/

            if (value.match(mailformat)) {
                //validation passed
            } else {
                this.msg.email = 'Enter a valid email';
            }
        },
}

javascript vue.js events nuxt.js blur

Answer 1

Answer №1

This solution should work effectively

<template>
  <div class="control">
    <input
      ref="email"
      v-model="email_p"
      class="input"
      type="text"
      name="email"
      @blur="validateMail"
    />
    message: {{ msg.email }}
  </div>
</template>

<script>
export default {
  data() {
    return {
      email_p: '',
      msg: {
        email: '',
      },
    }
  },
  methods: {
    validateMail(value) {
      const mailformat =
        /^(([^<>()[\]\\.,;:\s@"]+(\.[^<>()[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/

      if (value.target.value.match(mailformat)) {
        // validation successful
      } else {
        this.msg.email = 'Please enter a valid email'
      }
    },
  },
}
</script>

You can directly access the event without using $refs.
If you prefer to get the value through $refs, ensure to wait for a complete tick to trigger in order to retrieve the updated value accurately. Therefore, it's simpler and cleaner to use the passed event from @blur.

Moreover, remember that value.target.value is essential as it receives the event itself, not just the HTML element.

PS: You can also specify the event explicitly as

@blur="validateMail($event)"

for clarity, although it's not required (it already passes it by default).

Answer 2

This solution should work effectively

<template>
  <div class="control">
    <input
      ref="email"
      v-model="email_p"
      class="input"
      type="text"
      name="email"
      @blur="validateMail"
    />
    message: {{ msg.email }}
  </div>
</template>

<script>
export default {
  data() {
    return {
      email_p: '',
      msg: {
        email: '',
      },
    }
  },
  methods: {
    validateMail(value) {
      const mailformat =
        /^(([^<>()[\]\\.,;:\s@"]+(\.[^<>()[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/

      if (value.target.value.match(mailformat)) {
        // validation successful
      } else {
        this.msg.email = 'Please enter a valid email'
      }
    },
  },
}
</script>

You can directly access the event without using $refs.
If you prefer to get the value through $refs, ensure to wait for a complete tick to trigger in order to retrieve the updated value accurately. Therefore, it's simpler and cleaner to use the passed event from @blur.

Moreover, remember that value.target.value is essential as it receives the event itself, not just the HTML element.

PS: You can also specify the event explicitly as

@blur="validateMail($event)"

for clarity, although it's not required (it already passes it by default).

What steps can I take to ensure that the @blur event functions correctly in Nuxtjs?

Answer №1

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