رنگ کردن در جی کوئری

میشه یه نگاه به کد زیر بندازین: <form> سطر:<input type="number" min="1" max="8" step="1" id="rows" /> ستون:<input type="number" min="1" max="8" step="1" id="Columns" /> <input type="color" id="color" onclick="myfunction()"/> </form> <table border="1" width="80%"> <tr> <td>1</td><td>2</td> <td>3</td><td>4</td> <td>5</td><td>6</td> <td>7</td><td>8</td> </tr> <tr> <td>2</td><td>2</td> <td>3</td><td>4</td> <td>5</td><td>6</td> <td>7</td><td>8</td> </tr> <tr> <td>3</td><td>2</td> <td>3</td><td>4</td> <td>5</td><td>6</td> <td>7</td><td>8</td> </tr> <tr> <td>4</td><td>2</td> <td>3</td><td>4</td> <td>5</td><td>6</td> <td>7</td><td>8</td> </tr> <tr> <td>5</td><td>2</td> <td>3</td><td>4</td> <td>5</td><td>6</td> <td>7</td><td>8</td> </tr> <tr> <td>6</td><td>2</td> <td>3</td><td>4</td> <td>5</td><td>6</td> <td>7</td><td>8</td> </tr> <tr> <td>7</td><td>2</td> <td>3</td><td>4</td> <td>5</td><td>6</td> <td>7</td><td>8</td> </tr> <tr> <td>8</td><td>2</td> <td>3</td><td>4</td> <td>5</td><td>6</td> <td>7</td><td>8</td> </tr> </table> و این کد: <script src="jquery.min.js" type="text/javascript"></script> <script> function myfunction() { var a = ...