Results for “Text validation & formatting”
Small, practical examples. Search by task or narrow things down below.
Measure a short text value
C: Read the length of an ASCII string. Non-ASCII text may use multiple code units or bytes depending on the language.
C✓ Tested
Measure the byte length of UTF-8 text
C#: Character count and encoded byte count can differ for non-ASCII text.
C#✓ Tested
Mirror input text
Update a result as the user types using a jQuery input event.
jQuery✓ Tested
Name a meaningful image with alternative text
HTML: Alt supplies an accessible text alternative describing the image’s purpose.
HTML✓ Tested
Observe context cancellation
Observe context cancellation using a complete Go program with explicit sample inputs.
Go✓ Tested
Offer a downloadable text file
HTML: The download attribute supplies a filename for this same-document data URL.
HTML✓ Tested
Override context in a nested section
Override context in a nested section with a small React component and explicit browser behavior.
React✓ Tested
Parse an integer with validation
Validate range and trailing characters when parsing a C integer with strtol.
C✓ Tested
Parse JSON text
Read a JavaScript object from JSON text.
JavaScript✓ Tested
Print a fixed text buffer
Arduino / C: Print a fixed text buffer on an Uno with the Serial Monitor set to 9600 baud.
Arduino / C✓ Tested
Print text containing percent characters literally
Bash Scripts: Never use untrusted text as the printf format string.
Bash Scripts✓ Tested
Process a text file one line at a time
Java: Use a buffered reader to avoid loading a large file into memory.
Java✓ Tested