How to Validate Email Addresses with jQuery and Regex?

Validating Email Addresses with jQuery and Regex

Validating email addresses is a crucial step in ensuring the integrity of online forms and registrations. Using regular expressions (regex) offers a powerful tool for performing this validation.

Implementing Email Validation with Regex

The provided regex serves as a comprehensive expression for matching valid email addresses. It covers a wide range of scenarios, including:

• Alphanumeric characters (a-z, 0-9)
• Special characters (!#$%&'*/=?^_`{|~-)
• Periods (.) separating subdomains and domains
• Top-level domains (com, org, net, etc.)
• Subdomains composed of alphanumeric characters and hyphens (-)

Integrating Validation into jQuery Function

To incorporate this validation into your jQuery function:

$j("#fld_emailaddress").live('change',function() {
    var emailaddress = $j("#fld_emailaddress").val();

    if( !isValidEmailAddress( emailaddress ) ) {
        // Handle invalid email validation
    }

    // Continue with the original jQuery code
});

Using the isValidEmailAddress Function

The function isValidEmailAddress returns a Boolean value based on the validity of the email address provided. To use it, simply pass the email address as a parameter.

Additional Considerations

While this regex provides robust validation, it's important to note that there is no 100% foolproof email validation method. However, it represents a highly effective and widely accepted approach to email validation.

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