Solution to eloquentjavascript exercise second 2nd edition (Chapter 9) eloquent javascript

eloquentjavascript_solutions_chapter_9.js

// Solution to eloquentjavascript exercise second 2nd edition
// Chapter 9
// http://eloquentjavascript.net/2nd_edition/preview/09_regexp.html
// regex Golf
verify(/ca[rt]/,
       ["my car", "bad cats"],
       ["camper", "high art"]);

verify(/pr?op/,
       ["pop culture", "mad props"],
       ["plop"]);

verify(/ferr(et|y|ari)/,
       ["ferret", "ferry", "ferrari"],
       ["ferrum", "transfer A"]);

verify(/ious\b/,
       ["how delicious", "spacious room"],
       ["ruinous", "consciousness"]);

verify(/\s[\.,;:]/,
       ["bad punctuation ."],
       ["escape the dot"]);

verify(/\w{7,}/,
       ["hottentottententen"],
       ["no", "hotten totten tenten"]);

verify(/\b[^e\s]+\b/,
       ["red platypus", "wobbling nest"],
       ["earth bed", "learning ape"]);
//----------------------------------------------------
// Quoting Style
var text = "'I'm the cook,' he said, 'it's my job.'";
var text = "'I'm the cook' he said, 'it's my job'";
console.log(text.replace(/(^)'|(\W)'|'(\W)|'($)/g, "$1$2\"$3"));

//----------------------------------------------------
// Numbers again
var number = /^(\+|-)?((\d+(\.\d*)?)|(\.\d+))(((e|E)(\+|-)?)\d+)?$/;
// or 
// number = /^[+\-]?((\d+(\.\d*)?)|(\.\d+))(([eE][+\-]?)\d+)?$/;
// Tests:
["1", "-1", "+15", "1.55", ".5", "5.", "1.3e2", "1E-4",
 "1e+12", "+1.e3", ".8e-3"].forEach(function(s) {
   if (!number.test(s)) {
    console.log("Failed to match '" + s + "'");
   } else {
     console.log(s, "matched correctly!");
   }
});
["1a", "+-1", "1.2.3", "1+1", "1e4.5", ".5.", "1f5",
 "."].forEach(function(s) {
   if (number.test(s)) {
    console.log("Incorrectly accepted '" + s + "'");
   } else {
     console.log(s, "not matched correctly!");
   } 
});

For the quoting style, isn't this easier :
console.log(text.replace(/([^\w])'|^'/g, "$1""));