<nav class="navbar"><!--這是導航條-->?<div class="navbar-center">??????? <div class="brand"><a href="index.html">首頁圖標</a></div>??????? <ul id="header">??????????? <li class="link"><a class="listlink" href="#">link</a></li>??????????? <li class="link"><a class="listlink" href="#story" >link</a></li>??????????? <li class="link"><a class="listlink" href="#">link</a></li>??????????? <li class="link"><a class="listlink" href="#">link</a></li>??????????? <li class="link"><a class="listlink" href="#">link</a></li>??????? </ul>??? </div></nav><!--導航結束-->這是jsfunction js(id){?return document.getElementById(id).getElementsByTagName('li');}for(var i=0; i<js('header').length; i++){?js('header')[i].onClick=function(){??delcolor();??js('header')[i].style.color= '#f00';?}}function delcolor(){?for( var i=0; i<js('header').length; i++){??js('header')[i].style.color = '#666';?}哪里出的問題呢？求解答謝謝