Put checkbox inside drop down menu [closed]

问题:

drop down menu is here:

<select name="bus operator" title="eci bus operator">
<option value="select">Bus Operator</option>
<option value="1">relience</option>
<option value="2">volvo</option>
<option value="3">sony</option>
<option value="4">sairam</option>
</select>

I want to add a check box with every name like this.

回答1:

You can create a dropdown box with checkboxes by using the external library.check this link

Here is the live DEMO