Custom events in Firebase - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to log a custom event named "purchase" using Firebase Analytics.

Firebase

firebase.analytics().logEvent([1]);

Drag options to blanks, or click blank then click option'

A"purchase"

B"login"

C"error"

D"click"

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting quotes around the event name

Using a predefined event name instead of the custom one

The logEvent method requires the event name as a string. Here, "purchase" is the custom event we want to log.

2fill in blank

medium

Complete the code to log a custom event "level_up" with a parameter "level" set to 5.

Firebase

firebase.analytics().logEvent("level_up", [1]);

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A["level", 5]

B"level=5"

Clevel = 5

D{level: 5}

Attempts:

3 left

💡 Hint

Common Mistakes

Using an array instead of an object

Passing a string instead of an object

Using assignment syntax instead of an object

The second argument to logEvent is an object with key-value pairs representing parameters. Here, {level: 5} correctly sets the "level" parameter.

3fill in blank

hard

Fix the error in the code to correctly log a custom event "share" with parameter "method" set to "email".

Firebase

firebase.analytics().logEvent("share", [1]);

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A"method: email"

B{method: "email"}

C[method: "email"]

D{method = "email"}

Attempts:

3 left

💡 Hint

Common Mistakes

Using equals (=) inside object

Using square brackets instead of curly braces

Passing parameters as a string

Parameters must be passed as an object with key-value pairs using colon (:). The correct syntax is {method: "email"}.

4fill in blank

hard

Fill both blanks to log a custom event "tutorial_complete" with parameters "step" set to 3 and "success" set to true.

Firebase

firebase.analytics().logEvent([1], [2]);

Drag options to blanks, or click blank then click option'

A"tutorial_complete"

B{step: 3, success: true}

C"tutorial_start"

D{step: 1, success: false}

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping event name and parameters

Using wrong event name

Passing parameters as a string

The first argument is the event name as a string. The second argument is an object with parameters. Here, "tutorial_complete" and {step: 3, success: true} are correct.

5fill in blank

hard

Fill both blanks to log a custom event "purchase" with parameters "item" set to "sword", "price" set to 10, and "currency" set to "USD".

Firebase

firebase.analytics().logEvent([1], [2]);

Drag options to blanks, or click blank then click option'

A"purchase"

B{item: "sword", price: 10, currency: "USD"}

C{item: "shield", price: 15, currency: "EUR"}

D"sale"

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong event name

Incorrect parameter keys or values

Passing parameters as a string

The event name is "purchase" and the parameters object includes the correct keys and values for item, price, and currency.