How to implement “select all” check box in HTML?

Question

I have an HTML page with multiple checkboxes.

I need one more checkbox by the name \"select all\". When I select this checkbox all checkboxes in the HTML page must b

Answer 1

Slightly changed version which checks and unchecks respectfully

$('#select-all').click(function(event) {
        var $that = $(this);
        $(':checkbox').each(function() {
            this.checked = $that.is(':checked');
        });
    });