一个是怎样创建JSON：

var obj = {};

obj['name'] = value;

obj['anotherName'] = anotherValue;

假设要创建多级的JSON，则：

ips[ipId] = {};

ips[ipId]['name'] = value;

ips[ipId]['anotherName'] = anotherValue;

注意要用bracket[]而不能用点. 来訪问json object

bracket尽管写起来麻烦一些，可是能够避免非常多错误！

http://stackoverflow.com/questions/4071499/dynamically-add-variable-name-value-pairs-to-json-object

http://www.dev-archive.net/articles/js-dot-notation/

http://stackoverflow.com/questions/7102704/how-to-use-variables-in-dot-notation-like-square-bracket-notation