how to get the path of an object's value from a value in javascript

Question

Example:

var someObject = {
\'part1\' : {
    \'name\': \'Part 1\',
    \'txt\': \'example\',
},
\'part2\' : {
    \'name\': \'Part 2\',
    \'size\': \'15\',
           


        

Answer 1

If you try this on the window object you'll end up in trouble as it is self referential. Quick and easy way to get around this is to a depth check:

  function getPath(obj, val, path, depth) {
     if (!depth) depth = 0;
     if (depth > 50) return '';
     path = path || "";
     var fullpath = "";
     for (var b in obj) {
        if (obj[b] === val) {
           return (path + "/" + b);
        }
        else if (typeof obj[b] === "object") {
           fullpath = getPath(obj[b], val, path + "/" + b, depth++) || fullpath;
        }
     }
     return fullpath;
  }

This will return the same kind of path as above:

/part3/2/qty

To make that into an actual reference to variable simply regex:

'window' + '/part3/2/qty'.replace(/\/([0-9]+)\//g, '[$1].').replace(/\//g, '.')