BigDong BigDong - 5 months ago 21
Javascript Question

How to get the path from javascript object from key and value

I have a javascript object width depth.

I need to know the exact path from this key within the object ex: "obj1.obj2.data1"

I already know the key is data1, the value is 123.

My javascript object look like this

{
obj1: {
obj2: {
data1: 213,
data2: "1231",
obj3: {
data: "milf"
}
}
},
obj4: {
description: "toto"
}
}


How could I achieve that ?

here is a jsfiddle : http://jsfiddle.net/3hvav8xf/8/
I am trying to implement getPath.

Answer

I think recursive function can help to you (Updated version, to check value)

function path(c, name, v, currentPath, t){
    var currentPath = currentPath || "root";

    for(var i in c){
      if(i == name && c[i] == v){
        t = currentPath;
      }
      else if(typeof c[i] == "object"){
        return path(c[i], name, v, currentPath + "." + i);
      }
    }

    return t + "." + name;
};

path({1: 2, s: 5, 2: {3: {2: {s: 1, p: 2}}}}, "s", 1)
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