JSFiddle - React, Tailwind, and code Playground

HTML

<p><input type="checkbox" name="name[]" /> A</p>
<p><input type="checkbox" name="name[]" /> B</p>
<p><input type="checkbox" name="name[]" /> C</p>
<p><input type="checkbox" name="name[]" /> D</p>
<p><input type="checkbox" name="name[]" /> E</p>
<p><input type="checkbox" name="name[]" /> F</p>
<p><input type="checkbox" name="name[]" /> G</p>
<p><input type="checkbox" name="name[]" /> H</p>
<p><input type="checkbox" name="name[]" /> I</p>
<p><input type="checkbox" name="name[]" /> J</p>

JavaScript

$('input:checkbox').filter(function(){
    return (/ G/).test($(this).parent().text())
}).on('change', function() {
    var gBox = $(this);
    $('input:checkbox').prop('checked', $(gBox).prop('checked'));
});