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<h2>[URL]</h2>
<ol>
<li>]&nbsp;http://toys.usvsth3m.com/javascript-under-pressure/</li>
</ol>
<h2>[TEL]</h2>
<div><ol>
<li>]&nbsp;</li>
</ol>
<h2>[DIRECTIONS]</h2>
<div><ol>
<li>]&nbsp;</li>
</ol></div>
<h2>[REFERENCE]</h2>
<ol>
<li>]&nbsp;</li>
</ol>
<h3><strong>// 1] &nbsp;(something like) i will be an integer, double it and return ....????</strong></h3>
</div>
<div>
<div>return i*2 // FAIL b/c</div>
<div>
<h3><strong>// 2] &nbsp;i will be an integer. Return true if it's even, and false if it isn't.</strong></h3>
</div>
<div>function isNumberEven(i) { &nbsp;</div>
<div>&nbsp; &nbsp;&nbsp;</div>
<div>&nbsp; if(i % 2 === 0){</div>
<div>&nbsp; &nbsp; return true;</div>
<div>&nbsp; }</div>
<div>&nbsp; else{</div>
<div>&nbsp; &nbsp; return false;</div>
<div>&nbsp; }</div>
<div>}</div>
<div>&nbsp;</div>
<h3><strong>// 3 ]</strong>&nbsp;i will be a string representing filename, it may or may not have a file extension, if it does, return the extension name without the dot if it has one, or false if it does not&nbsp;</h3>
<div><strong>// this = 21 minutes ttl = 30 minutes</strong></div>
<div>// A FAIL</div>
<div>function getFileExtension(i) {</div>
<div>&nbsp; &nbsp; var substr = i.substring(i.length-4,i.length) ; &nbsp; &nbsp;</div>
<div>&nbsp; &nbsp; if ( substr.charAt(0)==='.'){</div>
<div>&nbsp; &nbsp; &nbsp; &nbsp; return substr.substring(substr.length-3,substr.length);</div>
<div>&nbsp; &nbsp; }</div>
<div>&nbsp; &nbsp; else{</div>
<div>&nbsp; &nbsp; &nbsp; &nbsp; return false;</div>
<div>&nbsp; &nbsp; }</div>
<div>}</div>
<div>// B</div>
<div>function getFileExtension(i) { &nbsp; &nbsp;</div>
<div>&nbsp; &nbsp; var substr = i.split('.') ;</div>
<div>&nbsp; &nbsp; if ( substr[1]){</div>
<div>&nbsp; &nbsp; &nbsp; &nbsp; return substr[1];</div>
<div>&nbsp; &nbsp; }</div>
<div>&nbsp; &nbsp; else{</div>
<div>&nbsp; &nbsp; &nbsp; &nbsp; return false;</div>
<div>&nbsp; &nbsp; }</div>
<div>}</div>
<div>SUCCESS! All tests passed. You've used 30:24 so far. Well done!</div>
<div>Top work, that was tricky. Two challenges left! Ready to start the clock again?</div>
</div>

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