Debiprasad Sahoo

This is a very simple sidebar widget which places javascript code in the widget. You need to provide only the script (while editing the widget), this widget will place this code inside javascript blocks.
You can also able to add JavaScript codes in text widget in sidebar. So you don’t need this plugin.

JavaScript Block Widget

Widget plugin to run any JavaScript in the sidebar

This is a very simple sidebar widget which places javascript code in the widget. In this plugin, you need to provide the url of the javascript and this plugin will use that js file source.
If you want to put any JavaScript code inside the <code><script></code> tag, then try my <a href="https://wordpress.org/extend/plugins/javascript-block-widget/" title="JavaScript Block Widget plugin" rel="ugc">JavaScript Block Widget plugin</a>.
You can also able to add JavaScript codes in text widget in sidebar. So you don’t need this plugin.
<h3>Usage</h3>
BidVertiser Ads 
BidVertiser Ads codes provide an URL of JavaScript code, which you need to include as the source in a JavaScript block. Get the url from the code generated from BidVertiser and provide while editing the widget values and you can see the ads in this sidebar widget.

Include JavaScript Widget

Allows you to insert any javascript code from a js file to your Wordpress widget

JavaScript Block Widget vs Include JavaScript Widget