Примеры для jQuery Селектор по идентификатору (“#id”)

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Select the element with the id "myDiv" and give it a red border.

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<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>id demo</title>
  <style>
  div {
    width: 90px;
    height: 90px;
    float: left;
    padding: 5px;
    margin: 5px;
    background-color: #eee;
  }
  </style>
  <script src="https://code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
 
<div id="notMe"><p>id="notMe"</p></div>
<div id="myDiv">id="myDiv"</div>
 
<script>
$( "#myDiv" ).css( "border", "3px solid red" );
</script>
 
</body>
</html>

Демонстрация:

Select the element with the id "myID.entry[1]" and give it a red border. Note how certain characters must be escaped with backslashes.

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<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>id demo</title>
  <style>
  div {
    width: 300px;
    float: left;
    padding: 2px;
    margin: 3px;
    background-color: #eee;
  }
  </style>
  <script src="https://code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
 
<div id="myID.entry[0]">id="myID.entry[0]"</div>
<div id="myID.entry[1]">id="myID.entry[1]"</div>
<div id="myID.entry[2]">id="myID.entry[2]"</div>
 
<script>
$( "#myID\\.entry\\[1\\]" ).css( "border", "3px solid red" );
</script>
 
</body>
</html>

Демонстрация: