ASP.NET and JavaScript Fundamentals

The HTML <script> tag uses the src (source) attribute to link external JavaScript files like "xxx.js". Using href is incorrect because it is reserved for stylesheets and links, while name and id are used for identifying elements, not loading external files.

External JavaScript files saved with .js extension should NOT contain the

To display text in an alert box, use alert("Hello World"). The alert() function is a built-in JavaScript method that shows a popup dialog. alertBox is not a valid JavaScript object or function.

Functions in JavaScript are created using the 'function' keyword followed by the function name and parentheses: function myFunction(). The equals sign or colon are not part of function declaration syntax.

To call a function in JavaScript, simply write the function name followed by parentheses: myFunction(). The 'call' keyword is not used in JavaScript - that's a different language. Functions are invoked by using their name directly.

The correct JavaScript conditional syntax is if (i==5) with parentheses around the condition and double equals for equality comparison. JavaScript uses C-style syntax with curly braces (not 'then' keyword) and == for comparison (not single = which is assignment).

In JavaScript and C-style languages, the not-equal operator is !=. The correct syntax requires the variable, the operator, and the value to be in parentheses: if (i != 5). Option A reverses the operator (=! is invalid), option C uses Pascal-style <> which isn't valid in JavaScript, and option D omits both the variable and parentheses.

A while loop in C-style syntax requires a condition in parentheses: while (condition). Option B incorrectly adds i++ which is for-loop syntax, and options C and D use Pascal/BASIC style (for i=1 to 10) or full for-loop syntax respectively.

A for loop in C-style languages has three parts separated by semicolons: initialization; condition; increment. Option D correctly shows for (i = 0; i <= 5; i++). Options A, B, and C are missing one or more required parts.

JavaScript uses // for single-line comments. Option A is correct. Option B is HTML comment syntax, option C is not valid comment syntax, and option D is incomplete (multi-line comments need both /* and */).

JavaScript multi-line comments use /* to open and */ to close. Option C is correct. Option A is HTML syntax, option B is two single-line comments which won't work for multiple lines, and option D is not valid comment syntax.

JavaScript arrays can be created with new Array() constructor taking comma-separated values in parentheses. Option B is correct. Options A, C, and D use invalid syntax with colons, equals signs, or missing parentheses.

JavaScript's Math object provides a round() method. Option B (Math.round(7.25)) is correct. Options A, C, and D either omit the Math prefix or use non-existent methods.

Math.max(x, y) returns the larger of two numbers. Option A is correct. Option B is a non-existent function, and options C and D use ceil which rounds up a single number rather than comparing two.

JavaScript opens new windows with window.open(). Option A shows the correct syntax. Option B uses a non-existent window.new(), option C treats window as a function (it's an object), and option D invents openwindow().

The browser status bar text is set via window.status property. Option A is correct. Option B invents a status() function, option C references a non-existent statusbar variable, and option D treats status as a method instead of a property.

The navigator object provides browser information via navigator.appName. Option B is correct. Options A and C reference non-existent objects (browser, client), and option D claims all are correct which is false.

ASP.NET 2.0 introduced 64-bit support, allowing applications to run on 64-bit processors and access more memory. Option C is correct. Earlier versions were primarily 32-bit, and 128-bit support is not a standard feature.

ASP.NET 2.0 maintains strong backward compatibility with ASP.NET 1.x applications. Most applications built on previous versions run without modification on ASP.NET 2.0. Breaking changes were minimal and well-documented.

Master Pages in ASP.NET 2.0 provide visual inheritance by allowing developers to create a consistent layout template that child pages can inherit. This enables centralized control over page structure, navigation, and common elements across an entire site.