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Rebecca Murphey
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tags for perf items
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‎content/performance/append-outside-loop.md

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title: Cache Length During Loops
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attribution: jQuery Fundamentals
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tags: performance
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Touching the DOM comes at a cost; if you're adding a lot of elements to the

‎content/performance/beware-anonymous-functions.md

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title: Beware Anonymous Functions
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attribution: jQuery Fundamentals
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Anonymous functions bound everywhere are a pain. They're difficult to debug,

‎content/performance/cache-loop-length.md

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title: Cache Length During Loops
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attribution: jQuery Fundamentals
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In a for loop, don't access the length property of an array every time; cache

‎content/performance/clever-conditionals.md

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title: Clever Conditionals
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attribution: jQuery Fundamentals
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// old way

‎content/performance/detach-elements-before-work-with-them.md

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title: Detach Elements to Work with Them
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The DOM is slow; you want to avoid manipulating it as much as possible. jQuery

‎content/performance/dont-act-on-absent-elements.md

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title: Don't Act on Absent Elements
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attribution: jQuery Fundamentals
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jQuery won't tell you if you're trying to run a whole lot of code on an empty

‎content/performance/dont-repeat-yourself.md

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title: Keep Things DRY
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attribution: jQuery Fundamentals
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Don't repeat yourself; if you're repeating yourself, you're doing it wrong.

‎content/performance/event-delegation.md

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title: Use Event Delegation
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attribution: jQuery Fundamentals
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Event delegation allows you to bind an event handler to one container element

‎content/performance/optimize-selectors.md

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title: Optimize Selectors
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attribution: jQuery Fundamentals
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Selector optimization is less important than it used to be, as more browsers implement document.querySelectorAll() and the burden of selection shifts from jQuery to the browser. However, there are still some tips to keep in mind.

‎content/performance/read-the-source.md

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title: Don't Treat jQuery as a Black Box
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Use the source as your documentation — bookmark

‎content/performance/use-stylesheets-for-changing-css.md

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title: Use Stylesheets for Changing CSS on Many Elements
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If you're changing the CSS of more than 20 elements using `$.fn.css`, consider

‎content/performance/variable-definition.md

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title: Variable Definition
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Variables can be defined in one statement instead of several.

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