JSFiddle - React, Tailwind, and code Playground

HTML

<input type="button" onclick="fix('saket+asf*asdf!sf?asf')"/>

JavaScript

function fix(val)
{
  var separators = ['+', '-', '(', ')', '*', '/', ':', '?'];
  var result="";
  flag=true;
  for(var i=0;i<val.length;i++)
  {
     flag=true;
     for(var j=0;j<separators.length;j++)
     {
        if(val[i]==separators[j])
        {
            result += " " + val[i] + " ";
            flag=false;         
        }
     }
     if(flag)
     {
            result +=val[i];
     }
}
    
alert(result);
}