JSFiddle - React, Tailwind, and code Playground

JavaScript

var myVal = "inset 0px -200px 0px -2px rgb(56, 56, 56)";
if((myVal.split(" ")[2]).indexOf(")") >= 0){
   myVal = myVal.split(" ")[4]    
}
else{
   myVal = myVal.split(" ")[2]
}

alert(myVal);
alert(parseInt(myVal,10));