Use the v-on directive to add an event listener for blur or focusout on the <input>:
v-on:EVENT_NAME="METHOD"
Example:
<input v-on:blur="handleBlur">
Or shorter syntax:
@EVENT_NAME="METHOD"
Example:
<input @blur="handleBlur">
new Vue({
el: '#app',
methods: {
handleBlur(e) {
console.log('blur', e.target.placeholder)
},
handleFocusout(e) {
console.log('focusout', e.target.placeholder)
}
}
})<script src="https://unpkg.com/vue@2.6.14/dist/vue.min.js"></script>
<div id="app">
<fieldset>
<legend>blur</legend>
<input @blur="handleBlur" placeholder="first name">
<input @blur="handleBlur" placeholder="last name">
</fieldset>
<fieldset>
<legend>focusout</legend>
<input @focusout="handleFocusout" placeholder="email">
<input @focusout="handleFocusout" placeholder="phone">
</fieldset>
</div>