I first heard about regular expression denial of service (ReDoS) vulnerabilities from GitHub's Dependabot. Several of my projects over the years have had dependencies that suffered from ReDoS ...

Evaluate mathematical expressions with operators like +, -, *, /, %, ^, etc. Evaluate logical expressions with operators like AND, OR, NOT, etc. Support for parentheses to control the order of ...

Working with regular expressions I’m also going to cover how to work with regular expressions in JavaScript, though the concepts learned here apply to other languages as well.

The “i” var in the “doSomething” function is assigned the value returned by the immediate function. The “x” var is scoped to the immediate function giving us block-like scope for our variables. Of ...

I'm trying to write a regular expression for a javascript function. I basically want to test the entire string to make sure the string only has alpha numberic characters and certain latin ...