Bug The foo function is intended to add two numbers. However, due to JavaScript's loose typing, if one of the inputs is a string, the + operator performs string concatenation instead of numerical ...

toUpperCase () – Converts the entire string to upper case. Note: The concat, match, replace, and search functions were added in JavaScript 1.2. All other functions are available in JavaScript 1.0.

Bug Description JavaScript's dynamic typing system can lead to surprising results when combining numbers and strings using the '+' operator. Instead of throwing an error, it performs string ...