cs2006_2024T3_Q1_AN.pdf

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A user's authentication token stored in local storage

A form input value that changes as the user types

The list of favorite items saved in a user's profile

A shopping cart saved between sessions

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undefined says Hello!

Jeremy says Hello!

Taylor says Hello!

ReferenceError

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10 10

undefined 10

10 undefined

undefined undefined

Error

"Initial - Computed"

"Updated - Computed"

"Initial - Computed Updated"

"Updated"

40

80

4040

undefined

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[]

[10, 20, 30]

[20, 40, 60]

[40, 60]

[40]

Item 1, Item 3

Item 2

Item 1, Item 2, Item 3

The list will be empty.

In a regular function call, “this” refers to the global object in non-strict mode and “undefined” in strict mode.

In an arrow function, “this” is lexically inherited from the enclosing execution context.

Inside a method of an object, “this” always refers to the object itself, regardless of how the method is called.

The value of “this” can be explicitly set using “call()”, apply(), or “bind()” methods, inside a method of an object.

“var” is function-scoped, hoisted, and allows reassignments.

“let” is block-scoped, hoisted, and allows reassignments.

“const” is block-scoped, hoisted, does not allow reassignments, and its value must be assigned at the time of declaration.

“let” and “const” behave identically except that const variables cannot be redeclared, while let variables can be redeclared in the same block.

call() and apply() immediately invoke the function, while bind() returns a new function that can be called later.

call() accepts arguments as a comma-separated list, whereas apply() accepts a single array of arguments.

bind() permanently sets the “this” context for a function, but the resulting function must still be explicitly called to execute.

All three methods are used to permanently change the “this” context of functions.

The user's current scroll position on a webpage.

The user's authentication token, saved in localStorage.

The temporary state of a dropdown menu.

All of these

Computed properties are cached based on their reactive dependencies, whereas methods are recalculated every time they are called.

Methods can be used to perform operations that do not need to be cached.

Computed properties can be used as methods if they require parameters.

Methods are always reactive and update automatically when their dependencies change.       **CT** **Section Id :** 64065369410 **Section Number :** 11 **Section type :** Online **Mandatory or Optional :** Mandatory **Number of Questions :** 14 **Number of Questions to be attempted :** 14 **Section Marks :** 50 **Display Number Panel :** Yes **Section Negative Marks :** 0 **Group All Questions :** No **Enable Mark as Answered Mark for Review and** No **Clear Response :** **Section Maximum Duration :** 0 **Section Minimum Duration :** 0 **Section Time In :** Minutes **Maximum Instruction Time :** 0