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POAdvantages and disvantages of preventing default event action at start or end of javascript function
 

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    <p>In the following javascript code sample:</p> <pre class="lang-js prettyprint-override"><code>var myButton = $('#myButton'); myButton.click(function (event) { /* stuff... */ event.preventDefault(); }); </code></pre> <p>What are de advantages and disvantages of default-preventing the action at the beginning or the end of the function? - supposing the case of unconditionally wanting to prevent it in the end. Is there any technical reason to choose one way?</p> <p>Surfing the internet i've found only <a href="http://webcache.googleusercontent.com/search?q=cache:6MAbJBGSznkJ%3adamionhart.com/wordpress/2012/06/02/start-or-end-function-with-e-preventdefault/+&amp;cd=1&amp;hl=es&amp;ct=clnk&amp;gl=es">one reference</a> -dead blog, sorry for the Google Cache link-, and points that preventing the default action at the beginning will avoid the action happening in case the js function crashes.</p> <p><strong>NOTE</strong>: i've used jQuery in my example just for familiarity, the question is not about jQuery, the answer for the classical event handling mode will be the same.</p>
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    1. COI am usually use return false at the end and prevent default at the begin, do not even sure why. meant either way
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    2. CObw good topic here http://stackoverflow.com/questions/1357118/event-preventdefault-vs-return-false
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    3. CO@dmi3y I already knew the article, but good point ;)
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