Tuesday, August 12th, 2008
Squirreling out the Fish on the iPhone
Category: iPhone, JavaScript
, Mobile
, Performance
HTML:
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<script type="text/javascript">
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function recurse(n) {
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if (n> 0) {
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return recurse(n - 1);
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}
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return 0;
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}
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try {
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// recurse(43687); // Highest that works for me in WebKit
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// nightly builds as of 24 Jul 2008.
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// recurse(2999); // Highest that works for me in Firefox 3.0.1
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// recurse(499); // Highest that works for me in Safari 3.1.2
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recurse(3000);
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document.write("Could be SquirrelFish.");
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} catch(e) {
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document.write("Not SquirrelFish.");
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}
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</script>
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This is the hack that John Grubber used to test whether iPhone 2.x had snuck in SquirrelFish. He was curious due to the performance improvements that he witnessed:
What about iPhone limits though? David Golightly tests the limits on the iPhone with a script that keeps downloading tiles until it can no longer do so:
After downloading about 210 images, the iPhone simply stops downloading new ones. This is probably due to hitting the hard 30MB same-page resource limit.
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4.4 rating from 19 votes
So basically, when SquirrelFish hits, it will hardly show up on the graph. :D