Vue Js Input Allow Only Positive Number:To allow only positive numbers in a Vue.js input field, you can use a v-model directive and a computed property. First, bind the input field to a data property using v-model. Then, create a computed property that returns the value of the input field if it is a positive number or 0 if it is not. Finally, bind the computed property to the input field using v-bind:value. This will update the input field with the computed property’s value, which will only allow positive numbers. You can also add validation messages to alert users if they try to enter a negative number.
How can I restrict an input field in Vue js to accept only positive numbers?
To restrict an input field in Vue.js to accept only positive numbers, you can add a method to the Vue instance that filters out any non-positive numbers from the input field. Here’s an example of how to do this
Vue Js Input Allow Only Positive Number Example
<div id="app">
<input type="number" v-model.number="positiveNumber" @input="filterNonPositive">
<div v-if="showError" class="error-message">Please enter a positive number.</div>
</div>
<script type="module">
const app = new Vue({
el: "#app",
data() {
return {
positiveNumber: '',
showError: false
}
},
methods: {
filterNonPositive() {
if (this.positiveNumber < 0 || isNaN(this.positiveNumber)) {
this.positiveNumber = '';
this.showError = true;
} else {
this.showError = false;
}
}
}
});
</script>
Output of Vue Js Input Allow Only Positive Number
