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JavaScript Build a Simple Dynamic Site with Node.js Handling Routes in Node.js Populating User Information

Posted by Kevin Lozandier
Kevin Lozandier
Courses Plus Student 53,747 Points

Profile function inside Profile.js error-prone when used due to declaration of ProfileEmitter without var/let/const

The provided profile.js file that finally gets explicitly get used in this lesson of the course is prone of throwing an exception—a ReferenceError because the variable proifleEmitter inside the Profile constructor function is attempted to be rebinded w/ this without being declared properly within the function.

Accordingly that expression on line 14 needs to be changed to the following way inside all the exercise files to avoid this exception from propagating : 

var ProfileEmitter = this; 
// For the curious, better (iojs/babel-node env, outside the scope of the course): let ProfileEmitter = this;
// For the extra curious, best: const ProfileEmitter = this; or not use a variable for `this` at all or an object literal w/ an init func to avoid a function & new at all. Also outside the scope of the class.

Used the latest version of Node.js & iojs (1.8.1) available via source or nvm on the latest version of Mac OS X Yosemite.

Andrew Chalkley perhaps may have experienced something differently running the script?

Allison Walker
Allison Walker
17,137 Points

Thanks for this, but this isn't fixing my error.

Allison Walker
Allison Walker
17,137 Points

Also your code has typos.