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Summary of JavaScript methods to obtain tr td

巴扎黑Original: 2017-08-17 15:59:471900browse

This article mainly introduces three ways to obtain tr td using JavaScript. You can check the detailed explanation below for the specific operation steps. Interested friends can refer to it.

First get the table, then get the tr tag, and then traverse the td */

//     $(&#39;#selectIds&#39;).val("");
//      var table = document.getElementById("tb_table");//获取第一个表格 
//      var array = table.getElementsByTagName("tr");//所有tr
//      for(var i = 1; i < array.length; i++) {
//       var id = array[i].children;
//       var idtext = id[1].innerHTML;
//       if(i == 1){
//         $(&#39;#selectIds&#39;).val($(&#39;#selectIds&#39;).val() + "" + idtext); 
//       }else{
//         $(&#39;#selectIds&#39;).val($(&#39;#selectIds&#39;).val() + "," + idtext);
//       }
//       }

/* How to write jQuery, get tr and then traverse all td. Note that the value obtained by td is .text(); */

//   $(&#39;#selectIds&#39;).val("");
//   var isFirst = true;
//    $("#tb_table").find("tr").each(function(){
//      var tdArr = $(this).children();
//      var idtext = tdArr.eq(1).text();
//      if(idtext != &#39;人员ID&#39;){
//        if(isFirst){
//        $(&#39;#selectIds&#39;).val($(&#39;#selectIds&#39;).val() + "" + idtext); 
//        isFirst = false
//        }else{
//          $(&#39;#selectIds&#39;).val($(&#39;#selectIds&#39;).val() + "," + idtext);
//        }
//      console.log("idtext",idtext);
//      }
//    })

/* Native js gets all rows, and then gets each cell*/

//   var table = document.getElementById("tb_table");
//   var rows = table.rows;//获取所有行
//   console.log("lenth",rows.length) //
//   for(var i=1; i < rows.length; i++){
//     var row = rows[i];//获取每一行
//     var id = row.cells[1].innerHTML;//获取具体单元格
//     console.log("id",id)
//   }

Summary:

$(this).children().eq( 1).text() gets the displayed value

$(this).children().eq(1).html() gets the value between b6c5a531a458a2e790c1fd6421739d1cb90dd5946f0946207856a8a37f441edf All content

$('.trSelected',grid).find("td").eq(7).text(); obtains the content of a selected row

Settings Value: $('.trSelected',grid).find("td").eq(7).text(''Set content'')

xxx.innerHTML; is the value of the object obtained in js .

Traverse the table$("#grid tr").each(function() {
().eq(1).text());
});

Use JavaScript to traverse

function load(){
   var tab=document.getElementById("grid");
   var rows=tab.rows;
   alert(rows.length);
   for(var i=0;i<rows.length;i++)
   {
    for(var j=0;j<rows[i].cells.length;j++)
    {
    alert("第"+(i+1)+"行，第"+(j+1)+"列的值是:"+rows[i].cells[j].innerHTML);
    }
   }
  }

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