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Apprentice

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Proxy

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Exercises (100)

○Proxy() — instanceof Object
Beginner
○Proxy() — typeof
Beginner
○Proxy() — transparent proxy
Beginner
○Proxy() — get trap returning constant
Intermediate
○Proxy() — null target throws
Intermediate
○Proxy get trap — append ! to key
Intermediate
○Proxy get trap — double value
Intermediate
○Proxy get trap — always return intercepted
Beginner
○Proxy get trap — passthrough (no trap)
Beginner
○Proxy get trap — typeof key
Intermediate
○Proxy set trap — log key on set
Intermediate
○Proxy set trap — double value on write
Intermediate
○Proxy set trap — passthrough (no trap)
Beginner
○Proxy set trap — returns true but does not store
Advanced
○Proxy — constructor typeof
Beginner
○Proxy has trap — always true
Intermediate
○Proxy has trap — passthrough for existing key
Beginner
○Proxy has trap — always false
Intermediate
○Proxy has trap — only x is present
Intermediate
○Proxy has trap — y is absent
Intermediate
○Proxy deleteProperty trap — log deleted key
Intermediate
○Proxy deleteProperty trap — passthrough
Beginner
○Proxy deleteProperty trap — return false
Intermediate
○Proxy deleteProperty trap — key removed from target
Beginner
○Proxy — typeof Proxy
Beginner
○Proxy() — instanceof Object
Beginner
○Proxy() — typeof
Beginner
○Proxy() — transparent proxy
Beginner
○Proxy() — get trap returning constant
Intermediate
○Proxy() — null target throws
Intermediate
○Proxy get trap — append ! to key
Intermediate
○Proxy get trap — double value
Intermediate
○Proxy get trap — always return intercepted
Beginner
○Proxy get trap — passthrough (no trap)
Beginner
○Proxy get trap — typeof key
Intermediate
○Proxy set trap — log key on set
Intermediate
○Proxy set trap — double value on write
Intermediate
○Proxy set trap — passthrough (no trap)
Beginner
○Proxy set trap — returns true but does not store
Advanced
○Proxy — constructor typeof
Beginner
○Proxy has trap — always true
Intermediate
○Proxy has trap — passthrough for existing key
Beginner
○Proxy has trap — always false
Intermediate
○Proxy has trap — only x is present
Intermediate
○Proxy has trap — y is absent
Intermediate
○Proxy deleteProperty trap — log deleted key
Intermediate
○Proxy deleteProperty trap — passthrough
Beginner
○Proxy deleteProperty trap — return false
Intermediate
○Proxy deleteProperty trap — key removed from target
Beginner
○Proxy — typeof Proxy
Beginner
○Proxy() — instanceof Object
Beginner
○Proxy() — typeof
Beginner
○Proxy() — transparent proxy
Beginner
○Proxy() — get trap returning constant
Intermediate
○Proxy() — null target throws
Intermediate
○Proxy get trap — append ! to key
Intermediate
○Proxy get trap — double value
Intermediate
○Proxy get trap — always return intercepted
Beginner
○Proxy get trap — passthrough (no trap)
Beginner
○Proxy get trap — typeof key
Intermediate
○Proxy set trap — log key on set
Intermediate
○Proxy set trap — double value on write
Intermediate
○Proxy set trap — passthrough (no trap)
Beginner
○Proxy set trap — returns true but does not store
Advanced
○Proxy — constructor typeof
Beginner
○Proxy has trap — always true
Intermediate
○Proxy has trap — passthrough for existing key
Beginner
○Proxy has trap — always false
Intermediate
○Proxy has trap — only x is present
Intermediate
○Proxy has trap — y is absent
Intermediate
○Proxy deleteProperty trap — log deleted key
Intermediate
○Proxy deleteProperty trap — passthrough
Beginner
○Proxy deleteProperty trap — return false
Intermediate
○Proxy deleteProperty trap — key removed from target
Beginner
○Proxy — typeof Proxy
Beginner
○Proxy() — instanceof Object
Beginner
○Proxy() — typeof
Beginner
○Proxy() — transparent proxy
Beginner
○Proxy() — get trap returning constant
Intermediate
○Proxy() — null target throws
Intermediate
○Proxy get trap — append ! to key
Intermediate
○Proxy get trap — double value
Intermediate
○Proxy get trap — always return intercepted
Beginner
○Proxy get trap — passthrough (no trap)
Beginner
○Proxy get trap — typeof key
Intermediate
○Proxy set trap — log key on set
Intermediate
○Proxy set trap — double value on write
Intermediate
○Proxy set trap — passthrough (no trap)
Beginner
○Proxy set trap — returns true but does not store
Advanced
○Proxy — constructor typeof
Beginner
○Proxy has trap — always true
Intermediate
○Proxy has trap — passthrough for existing key
Beginner
○Proxy has trap — always false
Intermediate
○Proxy has trap — only x is present
Intermediate
○Proxy has trap — y is absent
Intermediate
○Proxy deleteProperty trap — log deleted key
Intermediate
○Proxy deleteProperty trap — passthrough
Beginner
○Proxy deleteProperty trap — return false
Intermediate
○Proxy deleteProperty trap — key removed from target
Beginner
○Proxy — typeof Proxy
Beginner