javascript常用代码段搜集

1.json转字符串 代码如下: function json2str(o) {     var arr = [];     var fmt = function (s) {         if (typeof s == ‘object’ && s != null) return json2str(s);         return /^(string|number)$/.test(typeof s) ? “‘” + s + “‘” : s;     };     for (var i in o) arr.push(“‘” + i + “‘:” + fmt(o[i]));     retu