Vue Js Validate IFSC Code: Validating an IFSC code using Vue.js can be done by implementing a function that checks whether the entered code matches the format of an IFSC code or not. The format of an IFSC code consists of 11 alphanumeric characters where the first four characters represent the bank code, the fifth character is always 0, and the last six characters represent the branch code.

To implement the function in Vue.js, you can use regular expressions to match the IFSC code format and compare the entered code with the regex pattern. If the code matches the pattern, it is considered valid and the function returns true. Otherwise, it returns false, and an error message can be displayed to the user to correct the IFSC code.In this tutorial we will learn how to Vue Js Validate IFSC Code using Javascript Regular Expression 
The regular expression pattern for IFSC code is defined as follows: /^[A-Z]{4}0[A-Z0-9]{6}$/

^ and $ are the beginning and end of the string anchors, which ensure that the entire string matches the pattern.

[A-Z]{4} matches any uppercase letter from A to Z exactly four times.

0 matches the digit 0.

[A-Z0-9]{6} matches any uppercase letter from A to Z or digit from 0 to 9 exactly six times.

Vue Js IFSC Code Regular Expression

const ifscPattern = /^[A-Z]{4}0[A-Z0-9]{6}$/;

How to Vue Js Validate IFSC Code Using Regular Expression

This is a method written in Vue.js that validates an Indian Financial System Code (IFSC) code. Here is an explanation of the code:

• The first line defines a constant variable ifscPattern that contains a regular expression to match the IFSC code. The regular expression uses the following pattern:
  • Thus, an IFSC code should start with 4 uppercase letters, followed by a zero, and then followed by 6 alphanumeric characters.
• The if statement checks if the ifscCode property of the Vue.js component is empty. If it is, the error message is set to ‘Please Enter IFSC CODE’.
• If the ifscCode property is not empty, the regular expression pattern is applied to it using the test() method. If the pattern matches, the error message is set to ‘Valid IFSC CODE’.
• If the regular expression pattern does not match, the error message is set to ‘Invalid IFSC CODE’.

In summary, this code checks if the IFSC code entered by the user matches the required pattern, and displays an error message accordingly.

Vue Js Validate IFSC Code Example

<div id="app">
  <input type="text" v-model="ifscCode" @input="checkIfscCode" />
  <pre v-if="errorMessage" style="color:red">{{ errorMessage }}</pre>
</div>
<script type="module">
		const app = Vue.createApp({
			data() {
				return {
					ifscCode: '',
					errorMessage: '',
				}
			},
			methods: {
				checkIfscCode() {
				 const ifscPattern = /^[A-Z]{4}0[A-Z0-9]{6}$/;
					if (this.ifscCode === '') {
						this.errorMessage = 'Please Enter IFSC CODE';
					} else if (ifscPattern.test(this.ifscCode)) {
						this.errorMessage = 'Valid IFSC CODE';
					} else {
						this.errorMessage = 'Invalid IFSC CODE';
					}
				},
			},
		});
		app.mount('#app');
</script>

Output of Vue Js Validate IFSC Code