Basic Javascript Quiz - 1

In JavaScript, user actions like clicks, keypresses, and page loads are detected through events. The Event model allows scripts to respond to these actions.

A cookie is a small piece of data stored on the user's computer by the web browser while browsing a website. Sessions are stored server-side, and Applets are small applications, not simple variables.

To solve this question, the user needs to have basic knowledge of JavaScript syntax and understand the difference between uppercase and lowercase letters.

The answer is:

A. Yes

In JavaScript, capital letters and lowercase letters are different from each other. This means that variables named "test" and "Test" are considered two separate variables. It is important to be consistent with capitalization when naming variables and calling functions in JavaScript.

The onMouseOver event occurs when the mouse pointer is moved onto an element. onRollOver is used in Flash/ActionScript, and onMouseOut occurs when the pointer leaves the element.

charAt(0) returns the first character in a string because indexing starts at 0. charAt(1) would return the second character.

Option C is the only syntactically valid alert. The string is properly quoted and closed. Options A, B, and D have mismatched or missing quotes.

window.open() is the correct JavaScript method to open a new browser window. It takes URL, window name, and feature settings as parameters.

The indexOf() method returns the position of the first occurrence of a specified value in a string, effectively searching for the substring. substring() extracts characters, and find() is not a standard JavaScript String method.

The standard HTML tag for embedding or referencing executable script (usually JavaScript) is <script>. Tags like <scripting> or <js> are not valid HTML elements.