(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
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staltz
/ introrx.md
Last active
August 15, 2025 20:30
The introduction to Reactive Programming you've been missing
oliverfernandez
/ gist:5619180
Created
May 21, 2013 11:31
The operation consists to append 12 nodes to an existing parent node with 1000 children Three ways to do it:
1. Use parentNode.innerHTML += 2. User parentNode.innerHTML = 3. Use a parentNode.appendChild inside a loop. The method with the best performance is the last one. The last method doesn't need to read the current DOM or parse it.
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| var mainNodeInner = document.createElement('div'), | |
| mainNodeInnerPlus = document.createElement('div'), | |
| mainNodeAppend = document.createElement('div'), | |
| sampleHTML = '<div></div><div></div><div></div><div></div><div></div><div></div><div></div><div></div><div></div><div></div><div></div><div></div>', | |
| testHTML = '', | |
| numSamples = 1000, | |
| before = null, | |
| after = null; | |
| //SET UP |
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