JsLink is a good feature that was introduced in SP 2013 to allow users to bring in more flexibility in Client Side Rendering (CSR). With this you can control how your list data is getting displayed in View, Display, Edit and New forms.
For ex., you can achieve this using JSLink:
You can check the implementation here: JSLink Custom JS Rendering Tutorial
ISSUE:
The JS Link was still not working and the list view remained the same.
SOLUTION #1:
Check the URL you defined in your JSLink webpart property (under Miscellaneous). You need to define the URL as: “~site/Site Assets/xyz.js” instead of defining the absolute or relative URL of your js file. It should always begin with a given set of URL tokens and then your file path. JsLink URL can begin with either of the following URL tokens: ~site, ~sitecollection, ~layouts, ~sitecollectionlayouts or ~sitelayouts only. Absolute paths will break the JsLink functionality.
SOLUTION #2:
MDS (Minimal Download Strategy) strategy having issues. Try using RegisterModuleInit(“{file URL}”, MyJsMethod); to register the JSLink. Check this link.
Also, as a best practice, its recommended to specify the SharePoint CSR filename in the JS Link URL.
ex. The JSLink URL for Tile View in Promoted Links would look like:
sp.ui.tileview.js | ~site/SiteAssets/xyz.js
The Relentless FrontEnd - Aackose Lal's Blog 
Thank you very much for this post! After one day of searching and trying this was the hint for the solution. (SP 2016 on premise)
[…] JSLink SharePoint 2013 troubleshooting | The … – JsLink is a good feature that was introduced in SP 2013 to allow users to bring in more flexibility in Client Side Rendering (CSR). With this you can control how your … […]