add id in jquery code example

Example 1: add id jquery

$('element').attr('id', 'value');

Example 2: add id in jquery

TO add dynamically:
let $id=0;
$('ul li').each(()=>{
///use this also $('ul').children("li").each(function()=>{/// same below code})
  ///this will select the element under current selection, 
  ///THis outside the function relates or selects body, inside the function 
  /// denotes the selector php and js in think all library may be syntax 
  ///get vary
  $(this).attr('id','id'+$id)
  $i=$i+1
})
using js
///place the script just above to </body>
const s=document.getElementsByTagName('li');
len=s.length;
console.log(len)
for(let i=0;i<len;i++){
  s[i].id="id"+i;
}

Example 3: how to add id in jquery

$( "li" ).add( document.getElementsByTagName( "p" )[ 0 ] )
  .css( "background-color", "red" );

Example 4: how to add id in jquery

$( ".inner" ).append( "<p>Test</p>" );

Example 5: how to add id in jquery

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>append demo</title>
  <style>
  p {
    background: yellow;
  }
  </style>
  <script src="https://code.jquery.com/jquery-3.5.0.js"></script>
</head>
<body>
 
<strong>Hello world!!!</strong>
<p>I would like to say: </p>
 
<script>
$( "p" ).append( $( "strong" ) );
</script>
 
</body>
</html>

Example 6: how to add id in jquery

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>add demo</title>
  <script src="https://code.jquery.com/jquery-3.5.0.js"></script>
</head>
<body>
 
<p>Hello</p>
 
<script>
$( "p" ).clone().add( "<span>Again</span>" ).appendTo( document.body );
</script>
 
</body>
</html>

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