我是这样做的怎么给他们th里面每个加上不一样的ID呢？

Question

<div class="class_body"> <table cellSpacing=0> <script language="javascript" type="text/javascript"> document.write("<tr>"); titlehaed(0); writralldaylong(); document.write("</tr>"); </script> </table></div><div class="class_content"> <table cellSpacing=0 > <script language="javascript" type="text/javascript"> for (j=0;j<24;j++) { document.write("<tr>"); titles(j); writeTdone(j); document.write("</tr><tr>"); writeTdtwo(j); document.write("</tr>"); } </script> </table></div>function writeTdone(rowNum) { for(i=0; i<7; i++) { document.write('<td class="class_td_activity" onclick="clicks('+i + ',' + rowNum +')"></td>'); } }  function writeTdtwo(rowNum) { for(i=0; i<7; i++) { document.write('<td class="class_td_activityone" onclick="clicks('+i + ',' + rowNum +')"></td>'); } }  function titles(titleNum) { var titleText = new Array("上午12点","上午1点","上午2点","上午3点","上午4点","上午5点","上午6点","上午7点","上午8点","上午9点","上午10点","上午11点","下午12点","下午1点","下午2点","下午3点","下午4点","下午5点","下午6点","下午7点","下午8点","下午9点","下午10点","下午11点"); document.write('<th rowspan="2" class="class_th_time">'+titleText[titleNum]+'</th>'); }function sky(z) { z = z+1; alert("周" + z); }function writralldaylong () { for(z=0; z<7; z++) { document.write('<td class="class_td_content"onclick="sky('+z+')"></td>'); } }function titlehaed(titleNum) { var headText = new Array("GMT+08"); document.write('<th class="class_th_alldaylong">'+headText[titleNum]+'</th>'); }我是用JS写出的一个表格 7天一周那么怎么用JS在这个7个格子里面每个添加一个ID呢?也是用JS写的请问 用for写出来

Answer 1

懒得看你代码 ... 标题的问题回答如下 ...

<div>Hello World</div><script type="text/javascript">var div = document.getElementsByTagName("div")[0];
div.setAttribute("id","yourdiv");alert( document.getElementById("yourdiv").innerHTML );</script>

Answer 2

这是我根据我对你的意图的猜测得出的结论

function titles(titleNum)
{        var titleText = new Array("上午12点","上午1点","上午2点","上午3点","上午4点","上午5点","上午6点","上午7点","上午8点","上午9点","上午10点","上午11点","下午12点","下午1点","下午2点","下午3点","下午4点","下午5点","下午6点","下午7点","下午8点","下午9点","下午10点","下午11点");        document.write('<th rowspan="2" class="class_th_time" id="ID"'+titleNum+'>'+titleText[titleNum]+'</th>');
}