javascript - styling using jquery based on condition -

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i have following html code, have given background color red #list . if number of li more 5, want change background blue. please assist 

  <html>   <head>   <script src="jquery.js"></script>   <script type="text/javascript">   $(document).ready(function(){       var len= $("#list li").size();       if(len>5){       // need code style #list here if number of li more 5, background blue }   });   </script>    </head>   <body>   <ul id="list" style="background:red; width:300px;height:300px;"> <li>image 1</li> <li>image 2</li>     <li>image 3</li> <li>image 4</li>     <li>image 5</li> <li>image 6</li>     <li>image 7</li> <li>image 8</li>     <li>image 9</li> <li>image 10</li>   </ul>   </body>   </html>

you'll want use .length instead of size().

var len= $("#list li").length; if(len>5){     $("#list").css("background-color","blue"); //use .css() change background color }

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