<blockquote>Really? I always though indexOf was really slow. You wouldn't have any data to back that up by any change? I'm also curious, how would Regexp compare.</blockquote> Actually... indexOf is much faster than RegExp. Here are my tests... Function 1 is this: <code>'big house'.indexOf('house')!=-1;</code> Function 2 is this: <code>/house/.test(/big house/);</code> The results are: <blockquote>Function 1 is 1,797 ms (5.61x) faster than Function 2 Used 1,000,000 loops twice over 2.577 seconds total Function 1 time: 390 ms Function 2 time: 2,187 ms</blockquote> As you can see, indexOf was 5.61 times faster than RegExp. You can test this or anything for yourself in my <em>Measure Functions' Execution Times</em> script. I've found that comparing searching innerHTML and textContent, that searching the textContent is 27x faster. You can test for yourself in my script using document.body. <p><blockquote>Really? I always though indexOf was really slow. You wouldn't have any data to back that up by any change? I'm also curious, how would Regexp compare.</blockquote></p> <p>Actually... indexOf is much faster than RegExp. Here are my tests...</p> <p>Function 1 is this: <br /><code>'big house'.indexOf('house')!=-1;</code> <br />Function 2 is this: <br /><code>/house/.test(/big house/);</code></p> <p>The results are: <br /><blockquote>Function 1 is 1,797 ms (5.61x) faster than Function 2 <br />Used 1,000,000 loops twice over 2.577 seconds total <br />Function 1 time: 390 ms <br />Function 2 time: 2,187 ms</blockquote></p> <p>As you can see, indexOf was 5.61 times faster than RegExp.</p> <p>You can test this or anything for yourself in my <em>Measure Functions' Execution Times</em> script.</p> <p>I've found that comparing searching innerHTML and textContent, that searching the textContent is 27x faster. You can test for yourself in my script using document.body.</p> 2008-12-20T20:24:12Z 2 Forum 85042 18247 2008-12-20T20:49:43Z 23652