javascript中将Object转换为String函数代码 (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();
}