You can either include inline JavaScript in your web document or have a separate JS file and link it to the document as an external resource. You can also add CSS to HTML, to create a comprehensive webpage. The src attribute is used to include that external JavaScript file. So We will explain in detail about it further. Johnpatel.com is provide huge variety of Web Design and Development, SEO (Search Engine Optimization), Technology and Digital Marketing related tips, tricks, examples, tutorials and solutions. How to link back out of a folder using the a-href tag? HTML のhead要素の中で使われる要素の一つにlinkがありますが、きちんと実装しているブラウザが少なく、入門用の解説書でもほとんど触れられていないので、存在もあまり知られていません（最近ではスタイルシートのために少しずつ使われ始めているような）。 I will give you the best and easy solution to do that. You can include JavaScript in your HTML in two ways: Writing the code in your HTML; Including it as a link to an external file; For the most part, you will include the JavaScript as an external file. Run Javascript code from HTML link. In both of these cases, you will use the same