Practice writing simple style rules. In the following exercises, make use of the following declarations (one per line): background-color: silver ; font-size: larger ; These will be referred to as “the background declaration” and “the text declaration,” respectively. (a) Write CSS style rules that apply the background declaration to div elements and the text declaration to strong elements. (b) Write a single style rule that applies both the background and text declarations to both p and em elements. (c) Write a single style rule that applies the background declaration to HTML elements having a value of Nevada for their id attributes as well as to elements belonging to the shiny class. (d) Write a style rule that applies the text declaration to span elements that belong to the bigger class. (e) Write a style rule that applies the text declaration to span elements that are descendants of other span elements. (f) Write a style rule that applies the background declaration when the cursor hovers over a hyperlink.

(a)
div {
background-color: silver;
}
strong {
font-size: larger;
}

(b)
p, em {
background-color: silver;
font-size: larger;
}

(c)
#Nevada, .shiny {
background-color: silver;
}

(d)
span.bigger {
font-size: larger;
}

(e)
span span {
font-size: larger;
}

(f)
a:hover {
background-color: silver;
}

(a)
The specified value for the color property of p elements will be white, as it is the most specific rule applied to the element. The specified value for the background-color property of p elements will be black, as it is the only rule applied to the element. The specified value for the font-size property of p elements will be larger, as it is the most specific rule applied to the element with the !important declaration. If the p element belongs to the hmm class, the specified value for the color property will be fuchsia, as it is the most specific rule applied to the element.

(b)
The specified value for the color property of div elements will be blue, as it is the only rule applied to the element. If the div element belongs to the hmm class, the specified value for the color property will be fuchsia, as it is the most specific rule applied to the element. The value does not depend on which element type contains the div.

(c)
The color value given to an ol element that is a child of the body element will be yellow, as it is the most specific rule applied to the element. If the body element (not the ol element) belongs to the hmm class, the color value given to the ol element will be fuchsia, as it is the most specific rule applied to the body element.

(d)
The color value given to an ol element that is a child of the body element will still be yellow, as it is the most specific rule applied to the element. The * selector applies to all elements, but it is less specific than the body selector, so it does not override it in this case.

The output of this JavaScript program when executed by a typical web browser will be an alert dialog box displaying the number 6.

Explanation:
The program initializes a variable i to the value of 5, and then defines a function called duh. Within the function, a new variable i is declared using the var keyword, which creates a new variable with the same name as the outer variable but only within the scope of the function. The value of this inner variable is never set, so it remains undefined.

Next, the statement "window.i=6" is executed within the duh function, which sets the value of the global variable i to 6.

Finally, the duh function is called, which sets the value of the global variable i to 6. Since the window object is the global object in a web browser, this is equivalent to setting the global variable i to 6.

The last line of the program calls the alert function, which displays the value of the global variable i (which is now 6) in an alert dialog box.

The following JavaScript expression evaluates to true.

Explanation:

In JavaScript, the double equals operator (==) is a comparison operator that compares the values of two operands for equality, after converting both operands to a common type. If the operands have different types, JavaScript will attempt to convert one or both of them to a common type before making the comparison.

In this case, the left operand is the result of calling the built-in Number() function on the string "007", which converts the string to the number 7. The right operand is the string "007".

Since the two operands have different types, JavaScript converts the right operand to a number before making the comparison. The string "007" is a valid representation of a number, so JavaScript converts it to the number 7.

Now both operands are numbers, and they have the same numerical value of 7. Therefore, the comparison evaluates to true.

It's worth noting that the triple equals operator (===) is a stricter comparison operator that does not perform type coercion. If we used the triple equals operator instead of the double equals operator in this expression, it would evaluate to false, since the operands are of different types.

I'm sorry, I need more context to understand what you are referring to. Could you please provide more information or clarify your request?

The output of this JavaScript program, when executed by a typical web browser, will be an alert dialog box displaying the number 10.

Explanation:

The program initializes an object o1 with a property j set to the value of 9, and then creates a reference to that object called o2.

Next, the program defines a function called test that takes an object o1 as a parameter. Within the function, the value of the j property of the object o1 is set to 10, and then the function returns.

The test function is then called with o1 as an argument, which sets the value of the j property of the object o1 to 10.

Finally, the program calls the alert function, which displays the value of the j property of the object o2 (which is a reference to the same object as o1) in an alert dialog box. Since the j property of the object o1 was changed to 10 by the test function, the alert displays the number 10.

In other words, the program demonstrates that objects in JavaScript are passed by reference, not by value. When the object o1 is passed to the test function, a reference to that object is passed, so any changes made to the object inside the function are reflected outside the function as well. Therefore, when the value of the j property of the object o1 is changed to 10 inside the test function, the value of the j property of the object o2 is also changed to 10, since o2 is a reference to the same object as o1.

Here is the JavaScript code that will create an Object with a property named color having a String value of "red":

var myObject = {
  color: "red"
};

This code creates a new object called myObject using object literal notation, which is a shorthand way of creating objects in JavaScript. The object has a single property named color, which has a String value of "red". To access the value of this property, you can use dot notation like this:

console.log(myObject.color); // Output: "red"

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