Question

I have a string as :

var str = "str is str, 12str345 and ABCstrDEF";

I want capture all str except ABCstrDEF (str surrounded by alphabetical characters)

Is it possible restrict alphabets with regex?

Answer 1

Go with

RegExp.quote = function(str) {
  return (str + '').replace(/([.?*+^$[\]\\(){}|-])/g, "\\$1");
};

var re = new RegExp("/\b[^a-zA-Z]*?" + RegExp.quote(str) + "[^a-zA-Z]*?\b/g");  
alert(input.match(re));