Create an object out of dot notation
javascript, json
Solution
Off the top of my head I guess you can do something like this:
function addValueToObj(obj, newProp) {
newProp = newProp.split("="); // separate the "path" from the "value"
var path = newProp[0].split("."), // separate each step in the "path"
val = newProp.slice(1).join("="); // allow for "=" in "value"
for (var i = 0, tmp = obj; i < path.length - 1; i++) {
tmp = tmp[path[i]] = {}; // loop through each part of the path adding to obj
}
tmp[path[i]] = val; // at the end of the chain add the value in
}
var x = {a:1, b:2};
addValueToObj(x, "c.d=3");
// x is now {"a":1,"b":2,"c":{"d":"3"}}
addValueToObj(x, "e.f.g.h=9=9");
// x is now {"a":1,"b":2,"c":{"d":"3"},"e":{"f":{"g":{"h":"9=9"}}}}
Demo: http://jsfiddle.net/E8dMF/1/
Problem
This is a reverse question to this question. Given an object `x={a:1,b:2}` and a string `c.d=3`, modify object x to the following: ``` { a:1, b:2, c:{ d:3 } } ``` I'm looking for a solution that does not use `eval`. The use case is as follows: `x` being a configuration object, we call: `config.set("music.shuffle",true)` Now, `music.shuffle` must be parsed somehow and added to the internal object `x` inside the config.set function, so that x looks something like: ``` x={a:1,b:2,music:{shuffle:true}} ```