How to add and delete tables on the homepage?-JS Tutorial-php.cn

Page effect:

JS code:

　 1. Add table

function insertRows(){ //获取表格对象var tb1 = $("#dictTbl");
var tempRow = $("#dictTbl tr").size();//获取表格的行数
var $tdNum = $("<td align=&#39;center&#39;></td>");
    $tdNum.html(tempRow);
        var $tdName = $("<td align=&#39;center&#39;></td>");
    $tdName.html("<input name=\"itemname\" type=\"text\" id=\""+tempRow+"\" size=\"45\" maxlength=25>");
        var $tdDel = $("<td align=&#39;center&#39;></td>");
    $tdDel.html("<a href=&#39;javascript:delTableRow(\""+tempRow+"\")&#39;><img src=${pageContext.request.contextPath }/images/delete.gif width=15 height=14 border=0 style=CURSOR:hand></a>");
        // 创建tr，将3个td放置到tr中var $tr = $("<tr></tr>");
    $tr.append($tdNum);
    $tr.append($tdName);
    $tr.append($tdDel);//在表格的最后追加新增的tr    
    tb1.append($tr);
}

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　 2. Delete the table

function delTableRow(rowNum){ 
   //改变行号和删除的行号
   var tb1 = $("#dictTbl");   
   var tempRow = $("#dictTbl tr").size();//获取表格的行数
   if (tempRow >rowNum){     
      //获取删除行的id指定的对象，例如：<input name=\"itemname\" type=\"text\" id=\""+tempRow+"\" size=\"45\" maxlength=25>  
      $("#"+rowNum).parent().parent().remove();      
      //加1表示寻找下一个id，目的是将后面tr的格式向上移动  
      for (i=(parseInt(rowNum)+1);i<tempRow;i++){          
      //将i-1的值赋值给编号  $("#"+i).parent().prev().html(i-1);          
      //将i-1的值赋值给超链接的删除  
      $("#"+i).parent().next().html("<a href=&#39;javascript:delTableRow(\""+(i-1)+"\")&#39;><img src=${pageContext.request.contextPath }/images/delete.gif width=15 height=14 border=0 style=CURSOR:hand></a>");//          
      //将i-1的值赋值给文本框的id，用于删除  
      $("#"+i).attr("id",(i-1));//将id设置成i-1      
      }
   }
}

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JSP code:

<table cellspacing="0"   
cellpadding="1" rules="all" bordercolor="gray" border="1" id="dictTbl"style="BORDER-RIGHT:gray 1px solid; 
BORDER-TOP:gray 1px solid; 
BORDER-LEFT:gray 1px solid; 
WIDTH:100%; WORD-BREAK:break-all; 
BORDER-BOTTOM:gray 1px solid; 
BORDER-COLLAPSE:collapse; 
BACKGROUND-COLOR:#f5fafe; 
WORD-WRAP:break-word"><tr style="FONT-WEIGHT:bold;
                       FONT-SIZE:12pt;HEIGHT:25px;
                       BACKGROUND-COLOR:#afd1f3"><td class="ta_01" align="center" 
                                                 width="20%" height=22 background="${pageContext.request.contextPath }/images/tablehead.jpg">编号</td><td class="ta_01" align="center"  
                                                 width="60%" height=22 background="${pageContext.request.contextPath }/images/tablehead.jpg">名称</td><td class="ta_01" align="center"  
                                                 width="20%" height=22 background="${pageContext.request.contextPath }/images/tablehead.jpg">删除</td>                    
                                                 </tr>
               <tr><td class="ta_01" align="center"  
               width="20%">1</td><td class="ta_01" align="center"  width="60%">    
               <input name="itemname" type="text"  size="45" maxlength="25"></td><td class="ta_01" align="center"  width="20%"></td></tr>        
         </table>

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When using the

tag to add rows and delete rows in the table, the value filled in the page is obtained in the background. At this time It is an array object itemname of String type. The data can be saved by traversing the array, and the subsequent implementation of dictionary data storage will be expanded.

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source：php.cn

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