Javascript pattern matching

Question

In a string if we know a start point .how to find the end string using js or jquery

   var helper="$var_1__ee$var_2__ee";

    $var is the starting point and the end string pattern is ee

  How to split the string based on this pattern

Answer 1

Regular expressions will be useful here

helper.match(/$var[^$]*ee/)

To provide a more detailed answer you need to tell us what are you trying to extract from this string.