JSFiddle - React, Tailwind, and code Playground

HTML

<form>
  Login :
  <input id="logthis" type="text" name="fnName" value="user/855042,5_512125#2431072,25_729106@coursname Löcher in Socken flicken">
  <input type="button" value="Login" onClick="javascript:SeperateLoginString(logthis.value)">
</form>

JavaScript

function SeperateLoginString(logData) {
  var seperateString = [];
  var temp = new String(logData);
 
		temp = temp.replace(/@/g, ' ').replace(/_/g, ' ').replace(/#/g, ' ').replace(/\//g, ' ');
    alert(temp);
  seperateString = temp.split(" ");

  var user   = seperateString[0];
  var value1 = seperateString[1];
  var value2 = seperateString[2];
	var value3 = seperateString[3];
  var value4 = seperateString[4];
  var value5 = seperateString[5];
  
  for (var i = 6; i < seperateString.length; i++) {
    value5 += " " + seperateString[i];
	}
  alert(value5);
}