Vue Js Remove leading zero from number:To remove leading zeros from a number in Vue.js, you can use a combination of JavaScript’s built-in Number() function and Vue’s v-model directive. When a user enters a number with leading zeros in an input field, the v-model directive binds the input value to a Vue data property. Then, you can use the Number() function to convert the value to a number, which automatically removes any leading zeros. Finally, you can update the data property with the new value, which will reflect the trimmed number in the input field.

How can I remove leading zeros from a number in Vue js?

The Below code is a Vue.js application that allows the user to input a number as a string and then removes any leading zeroes from it. Here’s an explanation of how it works:

First, the Vue.js app is created with the Vue.createApp method. Inside the app, there are two data properties: myNumber and result. myNumber is initialized with the string “000345”, which has leading zeroes. result is an empty string that will be updated to show the modified number without leading zeroes.

There is also one method defined in the app called removeLeadingZero. This method is called every time the user inputs something in the input field. It takes the value of myNumber, converts it to a number using Number(), and then converts it back to a string using toString(). This has the effect of removing any leading zeroes from the number.

The removeLeadingZero method then sets the value of result to the modified number without leading zeroes. Finally, the mounted hook is used to call removeLeadingZero once when the app is first mounted.

Vue Js Remove leading zero from number Example

<div id="app">
   <input type="text" v-model="myNumber" @input="removeLeadingZero" />
   <small>Number:{{result}}</small>
</div>
<script type="module">
        const app = Vue.createApp({
            data() {
                return {
                    myNumber: "000345",
                    result: ''
                };
            },
            methods: {
                removeLeadingZero() {
                    this.result = Number(this.myNumber).toString();
                }
            },
            mounted() {
                this.removeLeadingZero()
            },
        })

        app.mount('#app')
</script>

Output of Vue Js Remove leading zero from number

How can you remove leading zeros from a number in Vue.js using regular expressions (regex)?

The Below code is using a regular expression (regex) to remove the leading zeros from a number in Vue.js.

The computed property “formattedNumber” takes the value of “numberInput”, converts it to an integer using “parseInt”, and then uses a regular expression to replace all leading zeros with an empty string.

The regular expression used is /^0+/, which matches one or more leading zeros at the beginning of the string. The “^” character matches the start of the string, and the “0+” matches one or more zeros. The replacement value is an empty string, effectively removing the leading zeros.

Here’s a breakdown of the regex used:

• /^0+/ – The regular expression pattern
• ^ – The caret character matches the start of the string
• 0+ – Matches one or more zeros
• / – End of the pattern
• ” – The replacement value, an empty string

So, the computed property returns the formatted number without any leading zeros, which will be displayed in the template

Vue Js Remove Leading Zero from Number using Regex

<div id="app">
   <label for="input-number">Enter a number:</label>
   <input type="text" id="input-number" v-model="numberInput">
   <p>Formatted number: {{ formattedNumber }}</p>
</div>
<script type="module">
        const app = Vue.createApp({
            data() {
                return {
                    numberInput: '000123',
                };
            },
            computed: {
                formattedNumber() {
                    let number = parseInt(this.numberInput);
                    return number.toString().replace(/^0+/, '');
                }
            },
        })

        app.mount('#app')
</script>