Angela Yu — Javascript

Angela Yu is the lead instructor for the popular on Udemy. In one of her most memorable sections, she demonstrates JavaScript's type coercion and quirks to shock students into paying attention.

// The "Angela Yu" classic example: let result = "Angela" + " " + "Yu"; // "Angela Yu" - normal angela yu javascript

The actual she tells isn't about a narrative plot, but a teaching moment : She asks students to predict the output of: Angela Yu is the lead instructor for the popular on Udemy

console.log([] + []); // "" console.log([] + {}); // "[object Object]" console.log({} + []); // 0 (in Chrome console) The circulating in forums and tweets is often phrased as: "Angela Yu once broke JavaScript by making it think 'Angela' minus 'Yu' equals 'Not a Number' – and then laughed while students questioned their life choices." So if someone says "Angela Yu JavaScript story" , they likely mean the type coercion horror story from her bootcamp that haunts beginners (and amuses veterans). // "" console.log([] + {})