javascript Object转换 String (json str)

function obj2str(o){
var r = [];
if(typeof o =="string") return "\""+o.replace(/([\'\"\\])/g,"\\$1").replace(/(\n)/g,"\\n").replace(/(\r)/g,"\\r").replace(/(\t)/g,"\\t")+"\"";
    if(typeof o == "object"){
        if(!o.sort){
            for(var i in o)
                r.push(i+":"+obj2str(o[i]));
            if(!!document.all && !/^\n?function\s*toString\(\)\s*\{\n?\s*\[native code\]\n?\s*\}\n?\s*$/.test(o.toString)){
                r.push("toString:"+o.toString.toString());
            }
            r="{"+r.join()+"}"
        }else{
            for(var i =0;i<o.length;i++)
                r.push(obj2str(o[i]))
            r="["+r.join()+"]"
        }
        return r;
    }
    return o.toString();
}

转载:http://www.drupaleye.com/node/27