Benchmark: iframe creation - MeasureThat.net

Tests:

regular iframe
var iframe = document.createElement('iframe') iframe.src = 'about:blank'; document.body.appendChild(iframe);
sandboxed
var iframe = document.createElement('iframe') iframe.src = 'about:blank'; iframe.sandbox='' document.body.appendChild(iframe);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
regular iframe
sandboxed

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser/OS: Chrome 120 on Windows

View result in a separate tab

Test name	Executions per second
regular iframe	117.2 Ops/sec
sandboxed	81.2 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and its components.

**Benchmark Overview**

MeasureThat.net is a website that allows users to create and run JavaScript microbenchmarks. The benchmark in question measures the performance of creating an iframe (inline frame) in different configurations.

**Script Preparation Code**

The script preparation code for this benchmark is empty, which means that it doesn't require any special setup or initialization before running the test case.

**Html Preparation Code**

The html preparation code is also empty, which implies that no specific HTML structure needs to be created for the benchmark.

**Benchmark Definition JSON**

The benchmark definition json consists of two individual test cases:

1. "regular iframe":
```javascript
var iframe = document.createElement('iframe')
iframe.src = 'about:blank'
document.body.appendChild(iframe);
```
This code creates an iframe element, sets its source to `about:blank`, and then appends it to the HTML document body.

2. "sandboxed":
```javascript
var iframe = document.createElement('iframe')
iframe.src = 'about:blank'
iframe.sandbox=''
document.body.appendChild(iframe);
```
This code creates an iframe element, sets its source to `about:blank`, and sets its sandbox attribute to an empty string (`''`). The `sandbox` attribute is used to control the rendering of content within an iframe. When set to `'''`, it means that the browser won't render any content or styles within the iframe.

**Options Compared**

In this benchmark, two different options are compared:

* Creating an iframe without sandboxing (`'''`) vs.
* Creating an iframe with sandboxing (`sandbox='''`)

**Pros and Cons of Each Approach:**

1. **Regular IFrame (no sandboxing)**:
	* Pros:
		+ Allows for more control over the content rendered within the iframe.
		+ Can be used to embed external content, such as web pages or other framesets.
	* Cons:
		+ May allow malicious scripts to run outside of the main document context, which can lead to security issues.
2. **Sandboxed IFrame**:
	* Pros:
		+ Provides a safer sandboxing mechanism for external content, limiting its ability to affect the parent document.
	* Cons:
		+ May limit the control and flexibility offered by non-sandboxed iframes.

**Library/Technologies Used:**

None are explicitly mentioned in the benchmark definition. However, it's worth noting that the `document.createElement()` method is a standard JavaScript API for creating new DOM elements.

**Special JS Features/Syntax:**

There are no specific special features or syntax used in this benchmark.

**Other Alternatives:**

To create an iframe, you can use other methods such as:

* Using the `HTMLIFrameElement` constructor (available in modern browsers)
* Creating a new `iframe` element and setting its properties programmatically

Here's an example using the `HTMLIFrameElement` constructor:
```javascript
const iframe = new HTMLIFrameElement();
ifram.src = 'about:blank';
ifram.frameBorder = 0;
document.body.appendChild(iframe);
```
Keep in mind that this approach may not be compatible with older browsers.

Related benchmarks:

iframe creation (version: 0)

Comparing performance of: regular iframe vs sandboxed

Created: 2 years ago by: Guest

Jump to the latest result

regular iframe

sandboxed

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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