Javascript Modules MCQ

Module loading frameworks may use different methods for exposing a module's API. For example, there may be a provides() function that modules can use to register their API, or an exports object into which modules must place their API.

The properties() method is used to retrieve information about the properties of a specific object.
This method is non-enumerable, meaning it is not included in the default iteration of an object's properties.

To prevent the creation of global variables, a module can use an object as a namespace.
This means that instead of defining global functions and variables, the module stores them as properties of an object, which may be linked to a global variable

This script defines a variable x and assigns it the value 123e5, which is equivalent to 123 * 10^5, or 1230000.
Then, it selects the element with the ID "demo" and changes its inner HTML to the value of x. The result would be that the element with the ID "demo" displays the text "1230000".

This script defines a function called myFunction() that does the following:
Declares a variable res and initializes it to an empty string.
Concatenates the result of the Number.isFinite() function applied to the expression 5-2 to res.
The Number.isFinite() function returns a boolean value indicating whether the value passed to it is a finite number.
In this case, it would return true. Selects the element with the ID "demo" and changes its inner HTML to the value of res.
When the function is called, the element with the ID "demo" would display the text "true".

This script defines a function called myFunction() that does the following:
Declares a variable res and initializes it to an empty string.
Concatenates the result of the Number.isInteger() function applied to the string '123' to res.
The Number.isInteger() function returns a boolean value indicating whether the value passed to it is an integer.
In this case, it would return false because the value passed is a string, not a number.

Selects the element with the ID "demo" and changes its inner HTML to the value of res. When the function is called, the element with the ID "demo" would display the text "false".

Crockford's subset of JavaScript excludes the use of the with and continue statements, as well as the eval() function. It also requires the use of function definition expressions instead of function definition statements.

Crockford's subset of JavaScript does not allow the use of the comma operator, bitwise operators, or the ++ and -- operators. It also requires the use of the strict equality operators === and !== instead of the non-strict equality operators == and !=, due to the type conversion that the latter operators perform.