| # | title | topic | type | difficulty |
|---|---|---|---|---|
| 1 | The + operator: string context wins | Type Coercion | Multiple choice | Hard |
| 2 | Numeric-preferred operators | Type Coercion | Multiple choice | Medium |
| 3 | The == algorithm, step by step | Type Coercion | Multiple choice | Hard |
| 4 | Take control of ToPrimitive | Type Coercion | Coding | Hard |
| 5 | Reimplement == from the spec (without using ==) |
| Type Coercion |
| Coding |
| Hard |
| 6 | null >= 0 but null != 0 | Type Coercion | Multiple choice | Hard |
| 7 | The army of things equal to nothing | Type Coercion | Multiple choice | Hard |
| 8 | '10' < '9' — string comparison traps | Type Coercion | Multiple choice | Hard |
| 9 | {} + [] — position is everything | Type Coercion | Multiple choice | Hard |
| 10 | Symbols: explicit yes, implicit never | Type Coercion | Multiple choice | Hard |
| 11 | Loose equality is not transitive | Type Coercion | Multiple choice | Hard |
| 12 | Make c == 1 && c == 2 && c == 3 true | Type Coercion | Coding | Hard |
| 13 | + concatenates, - calculates | Type Coercion | Multiple choice | Easy |
| 14 | Truthy or falsy? | Type Coercion | Multiple choice | Easy |
| 15 | Drag the coercion algorithm into order: [10] == 10 | Type Coercion | Drag & drop | Hard |
| 16 | Coercion flow: false + 4 | Type Coercion | Drag & drop | Easy |
| 17 | Coercion flow: '5' + 1 | Type Coercion | Drag & drop | Easy |
| 18 | Coercion flow: '5' - 1 | Type Coercion | Drag & drop | Easy |
| 19 | Coercion flow: typeof typeof false | Type Coercion | Drag & drop | Easy |
| 20 | Coercion flow: !!'0' | Type Coercion | Drag & drop | Easy |
| 21 | Coercion flow: 1 + true | Type Coercion | Drag & drop | Easy |
| 22 | Coercion flow: '' || 'anon' | Type Coercion | Drag & drop | Easy |
| 23 | Coercion flow: null + 1 | Type Coercion | Drag & drop | Easy |
| 24 | Coercion flow: building the baNaNa | Type Coercion | Drag & drop | Medium |
| 25 | Coercion flow: 1 + '2' - 3 | Type Coercion | Drag & drop | Medium |
| 26 | Coercion flow: '5' - - '2' | Type Coercion | Drag & drop | Medium |
| 27 | Coercion flow: '10' < '9' | Type Coercion | Drag & drop | Medium |
| 28 | Coercion flow: 1 < 2 < 3 | Type Coercion | Drag & drop | Medium |
| 29 | Coercion flow: 3 > 2 > 1 | Type Coercion | Drag & drop | Medium |
| 30 | Coercion flow: null == undefined | Type Coercion | Drag & drop | Medium |