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1. International Format
The international format for phone numbers begins with a plus sign (+) followed by the country code, area code (if applicable), and local phone number. For example: +1 555-123-4567. This format is commonly used for global communication and is recognized by most countries.
2. National Format
The national format for phone numbers varies by country but usually includes the area code (if applicable) and local phone number. For example: (555) 123-4567 in the US. This format is commonly used for domestic communication.
3. E.164 Format
E.164 is an ITU-T recommendation for the international public telecommunication numbering plan. It specifies the format of phone numbers used internationally and has become a standard format in many countries. The format includes the plus sign (+) followed by the country code and local phone number. For example: +15551234567.
4. RFC3966 Format
RFC3966 is a format for phone numbers specified by the Internet Engineering Task Force (IETF). It includes the phone number, the phone context (such as a trunk prefix or extension), and the dialing parameters for the call. For example: tel:+1-555-123-4567;ext=1234.
- Next, import the library into your project.
- Now you can use the .formatPhone() method to format phone numbers in your code.
- Pass the phone number as a parameter to the .formatPhone() method and it will return the formatted phone number.
- You can also specify the formatting pattern using placeholders such as X for any digit and Y for any non-digit characters.
One technique involves using regular expressions to capture phone number patterns and format them accordingly. This technique guarantees consistency and reduces the possibility of human error when formatting phone numbers.
Another technique involves using libraries such as Google’s libphonenumber or Yahoo’s phoneformat.js to handle phone number formatting for you. These libraries have a wealth of functions and options you can use to format phone numbers based on various factors such as country and region.
- Using regular expressions incorrectly
- Not validating input before formatting
- Assuming all phone numbers have the same format
- Not considering country codes
- Not handling extensions properly
By avoiding these mistakes, you can ensure that your phone number formatting code is accurate and reliable.
1. Know the format you want to achieve
2. Use clear variable names
3. Test thoroughly
Before deploying your formatted phone number code, be sure to test it thoroughly to make sure it’s working as expected. It’s easy to miss a small detail that can cause the code to break, so testing is key.
4. Use code comments
To make your code even more understandable, use comments to explain various sections and processes in your code. This will make it easier for other developers to read and work with your code if necessary.
5. Keep up-to-date with best practices