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POSome questions about the 25 jquery tips
 

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    <p>I was just reading this: <a href="http://www.tvidesign.co.uk/blog/improve-your-jquery-25-excellent-tips.aspx" rel="nofollow noreferrer">http://www.tvidesign.co.uk/blog/improve-your-jquery-25-excellent-tips.aspx</a></p> <p>And had some questions about some of the advocated tricks:</p> <p><strong>9 - Give your selectors a context:</strong></p> <p>What's the difference between using a context and using a more specific selector?</p> <p>Rather than doing</p> <pre><code>var selectedItem = $('#listItem' + i, $('.myList')); </code></pre> <p>What about</p> <pre><code>var selectedItem = $('.myList&gt;#listItem' + i); </code></pre> <p>Which one is faster/better, or is there no difference?</p> <p><strong>12 - Learn about event delegation:</strong></p> <p>I would imagine that at low handler counts event delegation is slower than normal binding. </p> <p>How many handlers is the time when you should start using event delegation?</p> <p>Also, what is the difference (in terms of how fast or how 'good' it is) between using delegation and creating a click target in dom, having the user click that click target, and then have the click target find the elements to manipulate. Is this method faster or is delegation faster?</p> <p>Edit: In addition, how many levels should you be delegating? Is it better to delegate something 10 levels away, or to simply bind 2 handlers.</p> <p><strong>13 - Use classes to store state</strong></p> <p><strong>14 - Even better, use jQuery's internal data() method to store state:</strong></p> <p>Why use data vs classes? Is data faster? I think I generally find classes to be easier to read, contradicting what it says in the blog entry, because I can see it in the DOM.</p> <p>Thanks!</p>
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    1. COThis is many separate questions. I would urge you to separate this into more than one question post so that you can select each answe that answers each question.
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    2. COThanks I would, except that I didn't want to come back every 20 minutes in order to post.
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    3. COThough of course all of the answers were helpful, I wish I could check Artem Barger's too.
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