JSFiddle - React, Tailwind, and code Playground

JavaScript

var url = "http://www.example.com/blog/files/398e042ea42b7ee9d1678b3c53132fc3-31.php#unique-entry-id-31"
console.log("base url >> " + url)    
var matcher = /(.*)#.*/.exec(url)
var truncated = matcher[1]
console.log("truncated url >> " + truncated)