README.md

Regex Input Validation

Problem

Write a function in JavaScript to validate inputs using regex, taking two parameters: input string and type (email, name, address, zip code, tel).

Solution

function validateInput(input, type) {
  // Create a regular expression for the given type
  const regex = {
    email:
      /^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*$/,
    name: /^[a-zA-Z]+(?:\s[a-zA-Z]+)*$/,
    address: /^[a-zA-Z0-9\s,.'-]+$/,
    "zip code": /^\d{5}(-\d{4})?$/,
    tel: /^\d{10}$/,
  };

  // Test the input against the regular expression
  return regex[type].test(input);
}

How it works

• The function takes two parameters: input string and type (email, name, address, zip code, tel).
• It creates a regular expression for the given type using the regex object.
• It tests the input against the regular expression using the test() method.
• It returns true if the input is valid, and false otherwise.

References

Regular expressions in JavaScript: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions

Problem Added By

• GitHub
• LinkedIn

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

Please make sure to update tests as appropriate.