InlineScript Helper — Zend Framework 2 2.1.5 documentation
The HTML <script> element is used to either provide inline client-side scripting elements or link to a remote resource containing client-side scripting code. The InlineScript helper allows you to manage both. It is derived from HeadScript, and any method of that helper is available; however, use the inlineScript() method in place of headScript().
Use InlineScript for HTML Body Scripts
InlineScript, should be used when you wish to include scripts inline in the HTML body. Placing scripts at the end of your document is a good practice for speeding up delivery of your page, particularly when using 3rd party analytics scripts.
Some JS libraries need to be included in the HTML head; use HeadScript for those scripts.