JavaScript is a dynamic language that is widely used in web development, but it comes with its own set of quirks that can bewilder beginners. One of the most quirky features of JavaScript is the concept of type coercion, where variables can be automatically converted from one type to another. For example, if you try to add a number to a string, JavaScript will convert the number to a string and concatenate them instead of performing a mathematical addition. This can lead to unexpected results, but it's also a fascinating aspect of the language that showcases its flexibility.

Another interesting characteristic is the tendency of JavaScript to create global variables unintentionally. If you forget to declare a variable with var, let, or const, it will automatically be assigned to the global scope. This can lead to scope pollution and difficult-to-track bugs in larger applications. Therefore, it’s crucial for beginners to understand these quirks and adopt best practices, such as using strict mode by adding 'use strict' at the top of your script, to help mitigate these issues.

JavaScript is a powerful language that can greatly enhance your web development skills. Here are the Top 10 JavaScript Tricks you should master to improve your efficiency and coding prowess:

1. Use Template Literals: Simplify string concatenation with template literals, enabling multi-line strings and embedded expressions.
2. Destructuring Assignment: Access and unpack properties from arrays or objects easily, making your code cleaner.
3. Arrow Functions: Write shorter function syntax that retains the scope of the this keyword.
4. Default Parameters: Set default values for function parameters, reducing the need for validation checks.
5. Promises and Async/Await: Manage asynchronous operations in a cleaner, more readable manner.

Continuing with the Top 10 JavaScript Tricks, here are five more techniques to boost your web development skills:

6. Event Delegation: Enhance performance by using a single event handler for multiple elements.
7. Array Methods: Master methods like map(), filter(), and reduce() for efficient data manipulation.
8. Object Spread Operator: Create shallow copies of objects easily and merge properties without mutating the original objects.
9. Lazy Loading: Improve load times by deferring the loading of resources until they're needed.
10. Modular Code: Organize your code into reusable modules for better maintainability and scalability.

JavaScript shenanigans refers to the clever, often unconventional techniques and tricks that developers use to enhance their code's performance, readability, or functionality. These shenanigans can include quirky hacks, unusual data structures, or creative algorithmic solutions. By leveraging these unexpected methods, developers can not only solve complex problems but also make their code more efficient. Popular examples include using closure for data privacy, or employing promises for better asynchronous handling. Embracing such strategies can lead to a more innovative approach to coding, allowing for unique implementations that set your work apart.

Implementing JavaScript shenanigans can significantly improve your code in several ways:

1. Enhanced Readability: Well-structured shenanigans can make your code easier to understand for others.
2. Performance Boosts: Creative solutions may optimize performance, reducing load times.
3. Reduced Complexity: Tackling problems from unconventional angles often leads to simpler solutions.

By incorporating these techniques, you not only enrich your coding repertoire but also contribute to better practices in your development community.