I just met you, and “this” is crazy, but here’s my NaN, so call(me) maybe?


JavaScript can be a passive-aggressive and fickle language that frustrates you at every turn! It lets you do things like declare variables wherever you want but doesn’t tell you that it will hoist them while you’re not looking. JavaScript’s this keyword is anything but, and eval can turn good code to evil fast. In this session, we will discuss the top 10 common JavaScript headaches, mistakes, or quirks you just need to know as well as how you can avoid them. Learn what can trip you, like the this keyword, JavaScript scoping, evil Eval, and the use of the With statement (VB devs beware!). Alongside those gotchas is the fact that not all equality operators are created equal and how the innocent looking parseInt() causes farce parses, and this session will dig into all these language quirks and more!

Rachel Appel

Rachel works as a developer evangelist for Microsoft based in the NYC Metro area. Previous to joining Microsoft, Rachel has worked with a variety of languages, technologies and systems. She has developed software products of all sizes, from small desktop programs to large scale enterprise applications at some of the world’s leading companies. Rachel’s expertise lies within developing solutions that align business and technology using the Microsoft .NET family of products, particularly ASP.NET & SQL Server. She is also a recognized speaker who can be found giving talks at national conferences such as DevConnections, MIX, CodeStock and others.  Rachel is also an alumni of the Microsoft MVP award program and INETA Speakers Bureau.