动态添加td输入框

function addRow() { 
        var tab=document.getElementById("tab");
        var n=document.getElementById("x").rowIndex+1;
        var tr=tab.insertRow(n);
        var td=tr.insertCell(0);                                                                                                                                                                                                                                                                     
        tr.innerHTML="<td class="table_body" align="right">日志内容</td><td class="table_none" colspan="3"><input name="syslogcontentcontent" type="text" id="pcuploadjpg" style="64%" onchange="CheckExt(this)"></td><td class="table_none"><img src="${ctx }/img/button/btn_delete_0.png" btn=btn title='删除'  onClick="deleteRow(this)" ></td>";
    }

function deleteRow(obj) {
        $(obj).parent().parent().remove();
    }

动态在div中添加input框

 function  hh(){
	  	   $("#zw1").append('<span id="news_' + InputCount+ '"><li style="margin-top:10px;" class="horizontal_onlyRight" ><input type="text" name="zw11" class="text_input100" onkeyup="tihuan(this)"  value=""/></li>'+"<li style='margin-top:10px;  margin-right:7px;' class="horizontal_onlyRight" ><img onmouseover="JavaScript:$(this).attr('src','${ctx }/img/newbtn/delete_1.png');" onmouseout="JavaScript:$(this).attr('src','${ctx }/img/newbtn/delete_0.png');" src='${ctx }/img/newbtn/delete_0.png' btn=btn title='删除' onclick='javascript:deleteRowSpecs1(this,"+InputCount+");'></li><span/>");
	  	   InputCount++;
	  }
	       function  hh1(){
	    	   $("#zw2").append('<span id="news_' + InputCount+ '"><li style="margin-top:10px;"  class="horizontal_onlyRight" ><input type="text" name="zw22" onkeyup="tihuan(this)" class="text_input100"  ></li>'+"<li style='margin-top:10px;  margin-right:7px;'  class="horizontal_onlyRight"><img onmouseover="JavaScript:$(this).attr('src','${ctx }/img/newbtn/delete_1.png');" onmouseout="JavaScript:$(this).attr('src','${ctx }/img/newbtn/delete_0.png');" src='${ctx }/img/newbtn/delete_0.png' btn=btn title='删除' onclick='javascript:deleteRowSpecs1(this,"+InputCount+");'></li><span/>");
	    	   InputCount++;
	    }

　　

 <div id="zw1" style="margin-bottom : 60px; margin-top:10px;" >
                            <li class="horizontal_onlyRight" style="margin-top:10px;">
                         	<input name="zw11" class="text_input100" id="zw11" onkeyup="tihuan(this)" value="">     
                         	</li>
                          </div>

1、innerHTML写入html代码方法，是原生态JS方法：
<div id="box"></div>
<script>document.getElementById("box").innerHTML="需要像box内写入的内容"</script>
2、append()是jQuery中的方法，需要先引用jQuery库代码。
<div id="box"></div>
<script>
$("#box").append("需要像box内写入的内容");
</script>