Courses / Frontend Security & Observability
31. XSS basics and safe string handling
Basic cross-site scripting concepts and safe handling of untrusted strings in web contexts (conceptual, not framework-specific).
JavaScript
XSS basics and safe string handling
Keeping untrusted text from being interpreted as executable code in a web page.
"I need to show user-supplied text on the page without letting it run as markup or script."
XSS (cross-site scripting) happens when untrusted input is embedded into a page in a way the browser treats as code; safe string handling means escaping or encoding that input for the specific context so it stays inert.
"I need to show user-supplied text on the page without letting it run as markup or script."
XSS (cross-site scripting) happens when untrusted input is embedded into a page in a way the browser treats as code; safe string handling means escaping or encoding that input for the specific context so it stays inert.