Multi-selection of Checkboxes on button click in jQuery?

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For this, use jQuery() with id property. Following is the code −

Example

Live Demo

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initialscale=1.0">
<title>Document</title>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/fontawesome/4.7.0/css/font-awesome.min.css">
<style>
   .changeColor {
      color: red
   };
</style>
</head>
<body>
<input type="button" id="selectDemo" value="Want To Select All
Values" />
<table>
<tr>
<td>
<input type="checkbox" id="CheckBoxId1"
class="isSelected" /> Javascript
</td>
</tr>
<tr>
<td>
<input type="checkbox" id="CheckBoxId2"
class="isSelected" /> MySQL
</td>
</tr>
<tr>
<td>
<input type="checkbox" id="CheckBoxId3"
class="isSelected" /> MongoDB
</td>
</tr>
<tr>
<td>
<input type="checkbox" id="CheckBoxId4"
class="isSelected" /> Python
</td>
</tr>
</table>
<script>
   jQuery("#selectDemo").click(function () {
      jQuery(this).toggleClass("changeColor");
      if (jQuery(this).hasClass("changeColor")) {
         jQuery(".isSelected").prop("checked", true);
         jQuery(this).val("Want To UnSelect All Values");
      } else {
         jQuery(this).removeClass("changeColor");
         jQuery(".isSelected").prop("checked", false);
         jQuery(this).val("Want To Select All Values");
      }
   });
</script>
</body>
</html>

To run the above program, save the file name “anyName.html(index.html)” and right click on the file. Select the option “Open with Live Server” in VS Code editor.