Njia appendChild

Njia appendChild inaruhusu kuingiza mwishoni mwa kipengele fulani kipengele kingine. Mara nyingi hutumiwa baada ya kuunda kipengele kwa kutumia createElement.

Syntax

javascriptmzazi.appendChild(kipengele);

Mfano

Wacha tuunde aya, tuiweke maandishi na tuiweke kwenye ukurasa mwishoni mwa kizuizi #parent:

html<div id="parent">
  <p>1</p>
  <p>2</p>
  <p>3</p>
</div>

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

let p = document.createElement('p');
p.textContent = '!';

parent.appendChild(p);

Matokeo ya utekelezaji wa kodi:

html<div id="parent">
  <p>1</p>
  <p>2</p>
  <p>3</p>
  <p>!</p>
</div>

Mfano

Ametolewa ul. Wacha tuweke ndani yake 9 vitambulisho li, wakati maandishi yao yatakuwa nambari za mpangilio:

html<ul id="parent"></ul>

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

for (let i = 1; i <= 9; i++) {
  let li = document.createElement('li');
  li.textContent = i;
  parent.appendChild(li);
}

Matokeo ya utekelezaji wa kodi:

html<ul id="parent">
  <li>1</li>
  <li>2</li>
  <li>3</li>
  <li>4</li>
  <li>5</li>
  <li>6</li>
  <li>7</li>
  <li>8</li>
  <li>9</li>
</ul>

Mfano

Wacha tujaze jedwali tr na td:

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

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

for (let i = 1; i <= 3; i++) {
  let tr = document.createElement('tr'); // tunaunda tr
  
  // Tunajaza tr kwa td:
  for (let j = 1; j <= 3; j++) {
    let td = document.createElement('td'); // tunaunda td
    td.textContent = j; // tunaandika ndani yake maandishi
    
    tr.appendChild(td); // tunaongeza td iliyoundwa mwishoni mwa tr
  }
  
  table.appendChild(tr); // tunaongeza tr iliyoundwa mwishoni mwa jedwali
}

Matokeo ya utekelezaji wa kodi:

html<table id="table">
  <tr>
    <td>1</td>
    <td>2</td>
    <td>3</td>
  </tr>
  <tr>
    <td>1</td>
    <td>2</td>
    <td>3</td>
  </tr>
  <tr>
    <td>1</td>
    <td>2</td>
    <td>3</td>
  </tr>
</table>

Angalia pia