Kuongeza Safu na Safu Wima kwenye Jedwali la HTML

Hebu tuchukulie tuna jedwali la HTML #table. Wacha tujifunze jinsi ya kuongeza safu mpya na safu wima ndani yake.

Kuongeza Safu

Kuongeza safu sio ngumu: inahitaji kutengeneza tr, kisha kukimbiza kitanzi ambacho kitaongeza idadi inayohitajika ya seli kwenye safu hii (hebu 3):

javascriptlet table = document.querySelector('#table');

let tr = document.createElement('tr');

for (let i = 1; i <= 3; i++) {
  let td = document.createElement('td');
  tr.appendChild(td);
}

table.appendChild(tr);

Kuongeza Safu Wima

Lakini kuongeza safu wima ni ngumu kidogo: inahitaji kukimbiza kitanzi, ambacho kitazunguka zote safu za jedwali na kwa kila safu kuongeza seli mpya:

javascriptlet trs = document.querySelectorAll('#table tr');

for (let tr of trs) {
  let td = document.createElement('td');
  tr.appendChild(td);
}

html<table id="table">
  <tr>
    <td></td>
    <td></td>
  </tr>
  <tr>
    <td></td>
    <td></td>
  </tr>
</table>

csstd {
  width: 50px;
  height: 50px;
  border: 1px solid black;
}