Request: add a method for converting a linked list to a string

[erelsgl]

While debugging linked lists, it could be useful to have a function that converts the list to a string representing the elements. Here is a function I use now:

LinkedList.Doubly.Circular.prototype.toString  = function() {
    var s = "";
    this.forEach(function(node, i) {
        var sfield = "";
        for (var field in node) {
            if (node.hasOwnProperty(field) && field!='prev' && field !='next' && field !='list') {
                if (sfield) sfield+=",";
                sfield += field+":"+node[field];
            }
        }

        if (s) s+=",\n ";
        s +="{"+sfield+"}"
    });
    return "["+s+"]";
}

Example:

var list = new LinkedList.Doubly.Circular();
var foo = {f:1}, bar = {b:1}, baz = {z:1};
list.push(foo);
list.push(bar);
list.push(baz);
console.log(list.toString());

Result:

[{f:1}, {b:1}, {z:1}]

I believe it can be useful to others too.