Benchmark: createElementTree ForEach

Script Preparation code:

var menu =
[
	{
		"className": "item",
		"content": "Open"
	},
	{
		"className": "item",
		"content": "Save"
	},
	{
		"className": "item",
		"content": "Close"
	},
	{
		"className": "item",
		"content": "Exit"
	}
];

Document.prototype.createElementTree1 = function(template, defaultTagName)
{
	var result;
	var index;
	var limit;
	var attribute;

	if(template instanceof Object)
		if("length" in template)
		{
			result = this.createDocumentFragment();
			limit = template.length;
			for(index = 0; index < limit; index++)
				result.appendChild(this.createElementTree1(template[index], defaultTagName));
		}
		else
		{
			result = this.createElement(template.tagName || defaultTagName || "div");
			for(attribute in template)
				switch(attribute)
				{
					case "tagName":
					case "content":
						break;
					default:
						result[attribute] = template[attribute];
						break;
				}
			if(template.content)
				result.appendChild(this.createElementTree1(template.content, defaultTagName));
		}
	else
		result = this.createTextNode(template);

	return(result);
};

Document.prototype.createElementTree2 = function(template, defaultTagName)
{
	var result;
	var attribute;

	if(template instanceof Object)
		if("length" in template)
		{
			result = this.createDocumentFragment();
			template.forEach(item => result.appendChild(this.createElementTree2(item, defaultTagName)));
		}
		else
		{
			result = this.createElement(template.tagName || defaultTagName || "div");
			for(attribute in template)
				switch(attribute)
				{
					case "tagName":
					case "content":
						break;
					default:
						result[attribute] = template[attribute];
						break;
				}
			if(template.content)
				result.appendChild(this.createElementTree2(template.content, defaultTagName));
		}
	else
		result = this.createTextNode(template);

	return(result);
};

Tests:

Indexed
document.createElementTree1(menu);
ForEach
document.createElementTree2(menu);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Indexed
ForEach

Fastest: N/A

Slowest: N/A

Latest run results:

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Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

I'll explain the provided benchmark and its components in detail.

**Benchmark Definition**

The benchmark is defined by a JSON object that describes two test cases: `createElementTree ForEach` and `createElementTree Indexed`. The `Name`, `Description`, and `Script Preparation Code` fields provide context for the benchmark.

In this case, we have a JavaScript function called `createElementTree` with two overloads:

1. `createElementTree1(template, defaultTagName)`: This function creates a document fragment or an element based on the provided template.
2. `createElementTree2(template, defaultTagName)`: This function is similar to `createElementTree1`, but it uses a `forEach` loop instead of recursion.

**Script Preparation Code**

The script preparation code defines the `menu` array, which is used as input for both test cases. The `menu` array contains objects with properties like `className` and `content`.

**Individual Test Cases**

There are two individual test cases:

1. **Indexed**: This test case calls `document.createElementTree1(menu)` with the `menu` array.
2. **ForEach**: This test case calls `document.createElementTree2(menu)` with the `menu` array.

**Comparison of Options**

The main difference between `createElementTree1` and `createElementTree2` is how they handle the `template` input:

* `createElementTree1` uses recursion to iterate over the `template` array, creating elements for each item.
* `createElementTree2` uses a `forEach` loop to iterate over the `template` array, also creating elements for each item.

**Pros and Cons**

**Recursion ( createElementTree1 ):**

Pros:

* Can handle nested templates more efficiently
* May be more efficient for large inputs

Cons:

* Can lead to stack overflow errors for very deep recursion
* May be slower due to function call overhead

**forEach Loop ( createElementTree2 ):**

Pros:

* Avoids potential stack overflow errors
* Can be faster due to loop overhead being less than recursive function calls

Cons:

* May not handle nested templates as efficiently
* Requires additional memory for the `forEach` loop iterator

**Library Usage**

Neither of the functions uses a JavaScript library. However, it's worth noting that the `createDocumentFragment()` and `createElement()` methods are part of the DOM API.

**Special JS Features or Syntax**

There is no special JavaScript feature or syntax used in this benchmark beyond the standard features of modern JavaScript.

**Other Considerations**

When choosing between these two approaches, consider the following:

* If you need to handle large inputs with nested templates, `createElementTree1` might be a better choice due to its potential for more efficient recursion.
* If you're working with very large inputs or want to avoid potential stack overflow errors, `createElementTree2` using a `forEach` loop might be a safer choice.

**Alternatives**

If you're looking for alternatives to these approaches:

1. **Iterate over the template array directly**: Instead of using recursion or a `forEach` loop, you can iterate over the `template` array directly and create elements in a single loop.
2. **Use a library like Lodash**: If you need to handle nested templates efficiently, consider using a library like Lodash, which provides an efficient way to iterate over arrays and objects.
3. **Use a DOM manipulation library**: If you're working with complex DOM structures, consider using a library like jQuery or a similar DOM manipulation tool.

Keep in mind that the best approach will depend on your specific use case and performance requirements.

Related benchmarks:

createElementTree ForEach (version: 0)

Comparing performance of: Indexed vs ForEach

Created: 6 years ago by: Guest

Jump to the latest result

Indexed

ForEach

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):