Benchmark: vs display:block;

HTML Preparation code:

<html lang="en" dir="ltr"><head>
<title>Dream in the night Lyrics - Touhou Wiki - Wikia</title>
</head>
<body class="mic">

	<section id="WikiaPage" class="WikiaPage V2">

<p><br>The twist of time
</p>
	</section>

</body></html>

Script Preparation code:

function textNodesUnder(el){
  var n, a=[], walk=document.createTreeWalker(el,NodeFilter.SHOW_TEXT,null,false);
  while(n=walk.nextNode()) a.push(n);
  return a;
}

function textNodeMapper(help = ['p','code',"span"]){
	textNodesUnder(document.body).map(function(e){
		if (!/\w/.test(e.data)){return ""}
		return help.map(function(lol){
			if (e.parentElement.localName === lol){ return e.data}
			if (e.id === lol){ return e.data}
			if (e.parentElement.className === lol){ return e.data}
			return null
		}).toString()
	}).filter(Boolean)
}


	var starterPack = 	["P",'SECTION',"SPAN","CODE","DIV"
						,"A","DT","DL","DD","FOOTER","MENU"]


if (localStorage.getItem('name2kill') === null){
	localStorage.setItem('name2kill',JSON.stringify(starterPack));
}


var tableEle, trEle, thEle;
tableEle = document.createElement('table');
trEle = document.createElement('tr');
thEle = document.createElement('th');
		tableEle.id = "tableEle";
	//	tableEle.style = "display:block;";
trEle.appendChild(thEle);
tableEle.appendChild(trEle);

var addEle;
addEle = document.createElement('button');
		addEle.id = "addEle";
addEle.appendChild(document.createTextNode('add-tag,class,id-name'));
//addEle.addEventListener("click", addKill);
addEle.type = "button";

var removeEle;
removeEle = document.createElement('button');
		removeEle.id = "removeEle";
removeEle.appendChild(document.createTextNode('unlist'));
//removeEle.addEventListener("click", removeKill);
removeEle.type = "button";

var resetEle;
resetEle = document.createElement('button');
		resetEle.id = "resetEle";
resetEle.appendChild(document.createTextNode('clearlist'));
//resetEle.addEventListener("click", killStorage);
resetEle.type = "button";

var inputEle;
inputEle = document.createElement('input');
		inputEle.id = "inputEle";
inputEle.value = '';
inputEle.type = "text";
//inputEle.setAttribute('style', 'width: initial;');

var divEle;
divEle = document.createElement("div");
	divEle.id = "divEle";
divEle.setAttribute('style', "top: 0; right: 0; position: fixed; z-index: 2146;");

var checkExist = setInterval(function() {
	if (document.body) { clearInterval(checkExist);
		divEle.appendChild(inputEle);
		divEle.appendChild(addEle);
		divEle.appendChild(removeEle);
		divEle.appendChild(resetEle);
	//	divEle.appendChild(document.createElement('br'));
	//	tableEle.style = "display:block;";
	//	divEle.appendChild(tableEle);
	//	document.body.appendChild(divEle);
	}
}, 100);

Tests:

divEle.appendChild(document.createElement('br')); // tableEle.style = "display:block;"; divEle.appendChild(tableEle); document.body.appendChild(divEle);
display:block;
// divEle.appendChild(document.createElement('br')); tableEle.style = "display:block;"; divEle.appendChild(tableEle); document.body.appendChild(divEle);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
<br>
display:block;

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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

LLMs can make mistakes. Check important info.

I'll explain the benchmark in detail.

**Benchmark Definition**

The provided JSON defines two test cases for measuring performance differences between using ` ` and `display:block;` to create line breaks in HTML elements. The script preparation code creates various HTML elements, including buttons, inputs, and a table, on the page. The html preparation code includes an HTML structure with a section element.

**Options Compared**

The two options compared are:

1. ** **: Using the ` ` tag to create line breaks in HTML elements.
2. **display:block;**: Setting the `display` property of an element to `block` using CSS.

**Pros and Cons of Each Approach**

1. ** **:
	* Pros: Widespread support across browsers, simple to use.
	* Cons: May not be as efficient as other methods, can lead to inconsistent spacing between elements if not used carefully.
2. **display:block;**:
	* Pros: More flexible and powerful than ` `, allows for more control over layout and styling.
	* Cons: Requires knowledge of CSS and may not work in older browsers.

**Library Usage**

The benchmark uses the `document.createTreeWalker()` function, which is a part of the DOM (Document Object Model) API. This function is used to traverse the document tree and retrieve text nodes under an element.

The script also uses the `localStorage` API to store a starter pack of HTML elements in case it's not available or has expired.

**Special JS Features/Syntax**

None mentioned in this benchmark.

**Other Considerations**

When creating line breaks in HTML, it's essential to consider the following:

* Using ` ` can lead to inconsistent spacing between elements if not used carefully.
* Setting `display:block;` provides more control over layout and styling but requires knowledge of CSS.
* The choice of method may impact page performance, especially on older devices or browsers.

**Alternatives**

If you need to create line breaks in HTML, consider using:

1. ` ` with caution and careful spacing management.
2. `display:block;` with CSS for more control over layout and styling.
3. Other methods like `line-height` or `flexbox` for more flexibility and power.

For measuring performance differences between these approaches, MeasureThat.net is an excellent tool that provides a controlled environment to test your code's efficiency.

Related benchmarks:

<br> vs display:block; (version: 0)

javascript generated Elements, when newline an Element <br> vs display:block; performance check

Comparing performance of: <br> vs display:block;

Created: 9 years ago by: Guest

Jump to the latest result

<br>

display:block;

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):