Go through a table and get data with javascript [closed]

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I'm a newbie with Javascript and I need to walk through the rows of a table and if checkbox is checked, get the value of a column (ID) and store it in array .

    
asked by anonymous 22.03.2018 / 15:04

1 answer

0

You did not enter the table structure, but no matter the structure, the code below will get the id of the column you indicate in the variable: 

var coluna = 3; // coluna em que está o ID

The code traverses each row of the table and verifies that there is a checkbox checked; if it does, it will get the id of the td (column) entered in the variable above ( var coluna ) and insert in the var ids = []; array.

See example: 

$(document).ready(function(){
   
   var ids = [];
   var coluna = 2; // coluna em que está o ID
   
   $("table tr").each(function(){
      
      if($(this).find("input[type='checkbox']").is(":checked")){
         
         ids.push($(this).find("td:eq("+(coluna-1)+")").attr("id"));
      }
      
   });
   console.log(ids);
   
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script><tableborder="1">
   <th>
      Coluna 1
   </th>
   <th>
      Coluna 2
   </th>
   <th>
      Coluna 3
   </th>
   <tr>
      <td id="linha1">
         <input type="checkbox" />
      </td>
      <td id="linha1_1">
         col 2, linha 1
      </td>
      <td id="linha1_2">
         col 3, linha 1
      </td>
   </tr>
   <tr>
      <td id="linha2">
         <input type="checkbox" checked />
      </td>
      <td id="linha2_1">
         col 2, linha 2
      </td>
      <td id="linha2_2">
         col 3, linha 2
      </td>
   </tr>
   <tr>
      <td id="linha3">
         <input type="checkbox" checked />
      </td>
      <td id="linha3_1">
         col 2, linha 3
      </td>
      <td id="linha3_2">
         col 3, linha 3
      </td>
   </tr>
</table>
    
22.03.2018 / 15:38
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