你必须了解的小知识-html 行转列-html教程-PHP中文网

你必须了解的小知识-html 行转列

零下一度

发布： 2017-04-25 14:14:46

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2617 人浏览过

在学习html的时候，我们需要知道些什么，我们要了解哪些小知识，下面小编就来为大家介绍一下html行转列。

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 
<html> 
  <head>  
    <title>行转列</title>    
    <script type="text/javascript" src="jquery-1.4.2.min.js"></script> 
    <script type = "text/javascript"> 
        $(function(){ 
             
            var trs = $("#table tr"); 
            var tdLength = $("#table > tbody > tr:eq(1) > td").length;  
            $("#rc").html("rows:" + trs.length + "\t columns:" + tdLength); 
            var times = new Array(); 
            $("#row2col").click(function(){  
                var begin = new Date();  
                var newTable = $("<table></table>").css({"border":"1px red solid"}).attr("border","1"); 
                newTable.appendTo($("#show"));  
 
                for(var i = 0; i < tdLength; i++){ 
                    var tr = $("<tr></tr>"); 
                    trs.each(function(index){  
                        var td = $("td:eq("+i+")",$(this));  
                        tr.append(td.clone()); 
                    }); 
                    newTable.append(tr); 
                }  
                 
                var end = new Date(); 
                var totalTime = end.getTime() - begin.getTime(); 
 
                times.push(totalTime);   
 
                $("#time").append( "times:"+ totalTime + "<br/>"); 
                $("#avgTime").html(function(){ 
                    var totals = 0; 
                    var count = times.length; 
                    for(var i in times){ 
                        totals += times[i]; 
                    }  
                    return "平均时间：" + (totals/count) + "mm"; 
                }); 
            }); 
        }); 
    </script> 
  </head> 
   
  <body>   
  <input type = "button" value = "row2col" id = &#39;row2col&#39; /> 
  <p id = "rc"></p> 
  <p id = "time" ></p> 
  <p id = "avgTime"></p> 
      <p id = &#39;show&#39; > 
          
      </p> 
      <table border = "1" id = "table"> 
           <tr> 
            <td>1</td> 
            <td>2</td> 
            <td>3</td> 
            <td>4</td> 
           </tr> 
           <tr> 
            <td>1</td> 
            <td>2</td> 
            <td>3</td> 
            <td>4</td> 
           </tr> 
           <tr> 
            <td>1</td> 
            <td>2</td> 
            <td>3</td> 
            <td>4</td> 
           </tr> 
       </table>  
       
  </body> 
</html>

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