如何在JavaScript中转义和取消引用？

Here's a short piece of code:

这是一段很短的代码:

var utility = {
    escapeQuotes: function(string) {
        return string.replace(new RegExp('"', 'g'),'\"');
    },
    unescapeQuotes: function(string) {
        return string.replace(new RegExp('\"', 'g'),'"');
    }
};

var a = 'hi "';

var b = utility.escapeQuotes(a);
var c = utility.unescapeQuotes(b);

console.log(b + ' | ' + c);
va