js遍历属性，返回字符串

拿到别人的代码，一个对象属性值非常复杂，但是在某些情况下有没有调试工具，如何办？如何查看对象的所有属性？一下代码可以解决这个问题

function WalkP(obj,showString){
    if(!WalkP.isArray(obj)){
        var str = "{\n";
        for(var o in obj){
            var value = "'"+(typeof obj[o]).toUpperCase()+"'";
            if(WalkP.isArray(obj[o])){//濡傛灉涓烘暟缁?
                    value = "'Array'";
            }
            
            if(typeof obj[o] == "object"){

                value = WalkP(obj[o],showString);

            }else if(typeof obj[o] == "string"||typeof obj[o]=="number"||typeof obj[o]=="boolean"){
                value = "'"+ WalkP.html.encode(obj[o].toString()) +"'";
            }
            str+="'"+o+"':"+value+",\n";
            
        }
        str = str.replace(/,\n$/,"");
        str+="\n}"
        return str;
    }else{
        var str="[";
        for(var i=0;i<obj.length;i++){
            var type = typeof obj[i];
            if(type == "object"){
                str+=WalkP(obj[i],showString)+",";
            }else if(typeof obj[i] == "string"||typeof obj[i]=="number"||typeof obj[i]=="boolean"){
                str+="'"+ WalkP.html.encode(obj[i].toString()) +"',";
            }else{
                str += "'"+(typeof obj[i]).toUpperCase()+"',";
            }
        }
        str = str.replace(/,$/,"");
        str+="]";
        return str;
    }
}
WalkP.html={
    encode:function(str){  
        var s = "";
        if(str.length == 0) return "";  
        s = str.replace(/&/g, "&amp;")  
                .replace(/</g, "&lt;")   
                .replace(/>/g, "&gt;")  
                .replace(/  /g, "&nbsp; ")
                .replace(/'/g,"&apos;")
                .replace(/"/g, "&quot;");
        return s;
    },
    
    decode:function(str){
        var s = "";
        if(str.length == 0) return "";
        s = str.replace(/&amp;/g,"&")
                .replace(/&lt;/g,"<")
                .replace(/&gt;/g,">")
                .replace(/&nbsp;/g," ")
                .replace(/&apos;/g,"'")
                .replace(/&quot;/g,"\"");
        return s;
    }
}
WalkP.isArray=function(o) {
    return Object.prototype.toString.call(o) === '[object Array]'; 
}