Overview of the Benchmark

The provided benchmark compares different approaches to convert an HTML class list to an array in JavaScript. The test cases use various methods, including Array.prototype.slice.call(), spread operator (...), push.apply() into an empty array, Array.from(), and Object.values(). The goal is to determine which method is the most efficient.

Options Compared

The benchmark compares the following options:

1. Array.prototype.slice.call(classes): This method uses the slice() method to extract a portion of the class list as an array, and then calls the call() method to convert it into an actual array.
2. Spread Operator (...): This method uses the spread operator to create a new array from the class list.
3. push.apply(other, classes): This method uses the apply() method to call the push() method on an empty array with the class list as its argument.
4. Array.from(classes): This method uses the from() method to create a new array from the class list.
5. Object.values(classes): This method uses the values() method to get a value iterator for the class list, and then converts it into an array.

Pros and Cons of Each Approach

1. Array.prototype.slice.call(classes):
   • Pros: Simple and widely supported. Can be used in older browsers.
   • Cons: May be slower than other methods due to the extra steps involved.
2. Spread Operator (...):
   • Pros: Modern, efficient, and concise.
   • Cons: Only supported in modern browsers (ES6+).
3. push.apply(other, classes):
   • Pros: Efficient, as it avoids creating an intermediate array.
   • Cons: May be less readable due to the use of apply().
4. Array.from(classes):
   • Pros: Modern and efficient, with good browser support (ES6+).
   • Cons: May not be as well-known or widely supported as other methods.
5. Object.values(classes):
   • Pros: Simple and concise, with good browser support (modern browsers).
   • Cons: May not be as efficient as other methods.

Special Considerations

The benchmark uses the classList property to access the class list of an HTML element. This is a common pattern in modern web development.

The test cases use different libraries and features that may affect the results, such as:

• Chrome 66: The browser version used for testing.
• Windows NT 10.0; Win64; x64: The device platform and operating system used for testing.

Other Alternatives

If none of these methods are suitable for your use case, you may consider using other approaches, such as:

• Using a library like Lodash or Array.prototype.map() to convert the class list to an array.
• Using a more specialized library like jQuery or Zepto, which provide additional functionality for working with HTML elements.

In conclusion, the spread operator (...) and Array.from(classes) are likely to be the most efficient methods in modern browsers, while the other approaches may be less efficient or require additional libraries.