@getify MIN_VALUE exmple

equality.js

[] == ![];     //true

finally.js

function foo() {
  try {
    return 2;
  }
  finally {
    return 3;
  }
}

foo(); // 3  <— wtf? where’s the 2?

min_value.js

Number.MAX_VALUE > 0;   //true
Number.MIN_VALUE < 0;   //false

object_coercion.js

Number({});   // NaN
Number([]);   // 0

object_to_string.js

o1 = { hello: “world” };
 
o2 = Object.create(null);
o2.hello = “world”;
 
o1 + “”;    // “[object Object]”
o2 + “”;    // TypeError!

symbol.js

s = Symbol(“that’s cool”);

s; // Symbol(that’s cool)

String(s); // "Symbol(that’s cool)”

s + “”; // TypeError!

tdz.js

{
  typeof a; // undefined
  typeof b; // TDZ error!

  // …

  let b;
}

tofixed.js

42.toFixed(2);    // Syntax Error
42. toFixed(2);   // Syntax Error
42 .toFixed(2);   // “42.00” 
42 . toFixed(2);  // “42.00” 
42.0.toFixed(2);  // “42.00” 
42..toFixed(2);   // “42.00”

zero_coercion.js

Number(“0.”);   // 0
Number(“.0”);   // 0
Number(“.”);    // NaN