UTF-8 BOM: What It Is and When It Causes Problems
Detect and safely remove a UTF-8 BOM when it breaks headers, JSON, CSV, or scripts.
The easy way to know
Detect and safely remove a UTF-8 BOM when it breaks headers, JSON, CSV, or scripts.
Understand how the HTTP Content-Type header and HTML meta charset declaration control decoding.
Find Unicode code points correctly in JavaScript, including supplementary characters.
Use named, decimal, and hexadecimal HTML character references correctly.
Diagnose mojibake and align file, HTTP, HTML, database, and connection encodings.
Compare UTF-8, ASCII, ISO-8859-1, and Windows-1252 and choose the safest encoding for new web content.
Build a Microsoft Access crosstab query with row headings, fixed month columns, totals, date criteria, and properly declared parameters.
Calculate a person’s completed age in Microsoft Access with a query expression or reusable VBA function, including birthdays and leap-day decisions.
Use Nz, IsNull, and IIf correctly in Microsoft Access queries, forms, and reports without confusing Null with zero or an empty string.
Summarize Microsoft Access records by month or year with DateSerial, Year, Month, and aggregate functions while preserving chronological sorting.