checkbox seleck max 3

by lemon kazi

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="checkbox" name="" /> <br/>
<input type="checkbox" name="" /> <br/>
<input type="checkbox" name="" /> <br/>
<input type="checkbox" name="" /> <br/>
<input type="checkbox" name="" /> <br/>
<input type="checkbox" name="" />

JavaScript

var lastChecked;

var $checks = $('input:checkbox').click(function(e) {
    var numChecked = $checks.filter(':checked').length;
    if (numChecked > 3) {
        alert("sorry, you have already selected 3 checkboxes!");
        lastChecked.checked = false;
    }
    lastChecked = this;
});