How to use the v-model to round up a number in Vue.js

Question

How to use the v-model to round up a number in Vue.js

I need to round up a number in my input field:

    <b-form-input id="amount_input" type="number"
     v-model="Math.ceil(form.contract.reward_cents / 100)"
      :state="validate(form.contract.reward_cents)"/>

After trying Math.ceil(), I encountered an error https://i.sstatic.net/Ksw4m.png

Can anyone provide assistance on how to resolve this issue?

This is the solution I came up with:

    computed: {
        reward_cents () {
           return Math.ceil(this.form.contract.reward_cents / 100);       
        },
    }

<template>
<b-form-input id="amount_input" type="number" v-model="reward_cents"
    :state="validate(form.contract.reward_cents)"/>
</template>

javascript vue.js vuejs2

Answer 1

Answer №1

Perhaps utilizing a computed property within the context of v-model could be a solution instead of relying on a traditional expression.

<b-form-input id="amount_input" type="number"
     v-model="reward_cents"
      :state="reward_cents"/>

<script>
  export default {
    computed: {
      reward_cents: {
        get() {
          return this.form.contract.reward_cents;
        },
        set(val) {
          this.form.contract.reward_cents = Math.ceil(val / 100);
        }
      }
    }
  }
</script>

Answer 2

Perhaps utilizing a computed property within the context of v-model could be a solution instead of relying on a traditional expression.

<b-form-input id="amount_input" type="number"
     v-model="reward_cents"
      :state="reward_cents"/>

<script>
  export default {
    computed: {
      reward_cents: {
        get() {
          return this.form.contract.reward_cents;
        },
        set(val) {
          this.form.contract.reward_cents = Math.ceil(val / 100);
        }
      }
    }
  }
</script>

Answer 3

Answer №2

Here is an example of a form input with Vue.js:

<b-form-input 
id="quantity_input" 
type="text"
:value="formData.quantity"
v-model="formData.quantity"
@change="updateData"
:state="validate(formData.quantity)"/>

data(){
    return: {
        formData: {
            quantity: 0
        }
    }
}

methods: {
    updateData(newQuantity){
        this.formData.quantity = parseFloat(newQuantity);
    }
}

Answer 4

Here is an example of a form input with Vue.js:

<b-form-input 
id="quantity_input" 
type="text"
:value="formData.quantity"
v-model="formData.quantity"
@change="updateData"
:state="validate(formData.quantity)"/>

data(){
    return: {
        formData: {
            quantity: 0
        }
    }
}

methods: {
    updateData(newQuantity){
        this.formData.quantity = parseFloat(newQuantity);
    }
}

How to use the v-model to round up a number in Vue.js

Answer №1

Answer №2

Similar questions

No files located by the server

obtain data in JSON format from a Node.js server and display it on an HTML

Click here to navigate to the same or a different page using an anchor

The Express server powered by Node.js is failing to send responses back to HTTP requests initiated from a JavaScript file, despite successfully receiving and processing the requests

What could be the reason for req.route displaying the previous route instead of

Issue with Chart.js V3.20: Struggling to Filter Legend Labels

Is it possible for XSS attacks to exploit the HREF attribute when used with jQuery?

Error: The Stripe webhook payload must be submitted as either a string or a Buffer

Guide on inserting text within a Toggle Switch Component using React

I encountered an issue with route handlers in Next.js version 13.2. Sadly, they are not

When converting to TypeScript, the error 'express.Router() is not defined' may

Encountering difficulties while trying to install ng2-material in Angular 2

I often find myself frustrated while using Next.js because the console automatically clears itself, making it difficult for me

Error: Cannot execute products.map in React JS because it is not a function

"Dynamic" visual in a Vue.js development scheme

The click functionality is not functioning properly within the .each() loop

How to Retrieve Checkbox Values from Multiple Rows Using JavaScript

Is there a way to make this eval() function function properly in Internet Explorer?

Adjusting the empty image source in Vue.js that was generated dynamically

Where can I find the link to access three.js on the internet?