Javascript injection attack

https://www.softwaretestinghelp.com/javascript-injection-tutorial/

follow below link

https://stackoverflow.com/questions/20855482/preventing-html-and-script-injections-in-javascript

https://docs.microsoft.com/en-us/aspnet/mvc/overview/older-versions-1/security/preventing-javascript-injection-attacks-cs

https://www.wordfence.com/learn/how-to-prevent-cross-site-scripting-attacks/

https://codeburst.io/a-little-cleaner-preventing-html-javascript-injection-fb10ae748b9e

Hello Saurabh

Please check these Links

https://stackoverflow.com/questions/942011/how-to-prevent-javascript-injection-attacks-within-user-generated-html

https://www.codeproject.com/Articles/134024/HTML-and-JavaScript-Injection

https://www.softwaretestinghelp.com/javascript-injection-tutorial/

https://deadliestwebattacks.com/2013/01/22/know-your-javascript-injections/

Video

https://www.youtube.com/watch?v=Pavl4MYFfSw