Question

How to find a substring in a string if i give starting and ending tags/words to function and returns me substring with its starting and ending index in java script

Answer 1

some function like this

function extractword(str, start, end){
  var startindex = str.indexOf(start);
  var endindex = str.indexOf(end, startindex);
  if (startindex !=-1 && endindex !=-1 &&  endindex  > startindex )
    return str.substring(startindex , endindex )
}

or can use some regex if you know