Benchmark: reading textbox: textContent vs substringData

Script Preparation code:

var xs = [...Array(1000).keys()].map(i => {
  var textbox = document.createElement(`div`);
  textbox.contentEditable = true;
  textbox.textContent = [...Array(10000).keys()].map(n => String.fromCharCode(((n+i) % 10) + 65)).join(``);
  return textbox;
});

var t = 0;

Tests:

data.slice
let textbox = xs[(Math.random()*1000)|0]; let i = (Math.random()*9000)|0; let s = textbox.firstChild.data.slice(i, i+100); t += 0|(s.length + s.charCodeAt((Math.random()*100)|0));
substringData
let textbox = xs[(Math.random()*1000)|0]; let i = (Math.random()*9000)|0; let s = textbox.firstChild.substringData(i, 100); t += 0|(s.length + s.charCodeAt((Math.random()*100)|0));
textContent.slice
let textbox = xs[(Math.random()*1000)|0]; let i = (Math.random()*9000)|0; let s = textbox.textContent.slice(i, i+100); t += 0|(s.length + s.charCodeAt((Math.random()*100)|0));

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
data.slice
substringData
textContent.slice

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.182 Safari/537.36

Browser/OS: Chrome 88 on Linux

View result in a separate tab

Test name	Executions per second
data.slice	313990.1 Ops/sec
substringData	435467.3 Ops/sec
textContent.slice	320497.8 Ops/sec

reading textbox: textContent vs substringData (version: 0)

Comparing performance of: data.slice vs substringData vs textContent.slice

Created: 4 years ago by: Registered User

Jump to the latest result

data.slice

substringData

textContent.slice

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A