The main difference between Python and JavaScript is the type system and application scenarios. 1. Python uses dynamic types, suitable for scientific computing and data analysis. 2. JavaScript adopts weak types and is widely used in front-end and full-stack development. The two have their own advantages in asynchronous programming and performance optimization, and should be decided according to project requirements when choosing.

In JavaScript, you need to use a custom function to determine whether two arrays are equal, because there is no built-in method. 1) Basic implementation is to compare lengths and elements, but cannot process objects and arrays. 2) Recursive depth comparison can handle nested structures, but requires special treatment of NaN. 3) Special types such as functions and dates need to be considered, and further optimization and testing are required.

Setting the attribute value of an element in JavaScript can use the setAttribute method or directly manipulate the attributes of the element. 1. Use the setAttribute method to set any type of attribute, including custom attributes, but the HTML attribute is set. 2. Directly manipulating the attributes of elements is more intuitive and suitable for common attributes, but custom attributes cannot be set, and the effects may be different for some attributes.

Using JavaScript to implement data encryption can use the Crypto-JS library. 1. Install and introduce the Crypto-JS library. 2. Use the AES algorithm for encryption and decryption to ensure that the same key is used. 3. Pay attention to the secure storage and transmission of keys. It is recommended to use CBC mode and environment variables to store keys. 4. Consider using WebWorkers when you need high performance. 5. When processing non-ASCII characters, you need to specify the encoding method.

Whether to choose Python or JavaScript depends on the project type: 1) Choose Python for data science and automation tasks; 2) Choose JavaScript for front-end and full-stack development. Python is favored for its powerful library in data processing and automation, while JavaScript is indispensable for its advantages in web interaction and full-stack development.

To achieve the rotation effect of an element, use JavaScript combined with CSS3's transform attribute. 1. Use transform's rotate() function to set the rotation angle. 2. Realize dynamic rotation through requestAnimationFrame. 3. Consider reducing DOM operations or using CSS animations when optimizing performance. 4. Ensure browser compatibility and add prefixes. 5. User interactive control rotation is achieved through mouse or touch events.

Function anti-shake is an optimization technique used to handle frequently triggered events. The implementation steps include: 1. Set a timer, clear the previous timer and reset the new timer every time the event is triggered; 2. If there is no new event trigger within the timer time, execute the defined function.

There are three main ways to deal with asynchronous operations in JavaScript: 1. Callback functions, which can easily lead to callback hell; 2. Promise, which provides clearer process expression, but may be lengthy when processing multiple operations; 3. async/await, which is based on Promise, and the code is more intuitive, but performance issues need to be paid attention to.