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- <ul>
- <li>1</li>
- <li>2</li>
- <li>3</li>
- <li>4</li>
- <li>5</li>
- <li>6</li>
- <li>7</li>
- <li>8</li>
- <li>9</li>
- <li>10</li>
- </ul>
- <ul>
- <li class="first-half">1</li>
- <li class="first-half">2</li>
- <li class="first-half">3</li>
- <li class="first-half">4</li>
- <li class="first-half">5</li>
- <li>6</li>
- <li>7</li>
- <li>8</li>
- <li>9</li>
- <li>10</li>
- </ul>
- var $lis = $("ul li");
- $lis.slice(0, Math.floor($lis.length/2)).addClass("first-half");
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