Convert string with dot notation to JSON

Question

Given a string as dot notation, how would I create an object from that string (checking for already existing properties): eg

var obj = {};
stringToObj(\'a.b\         


        

Answer 1

You can take advantage of references:

function stringToObj(path,value,obj) {
    var parts = path.split("."), part;
    while(part = parts.shift()) {
        if( typeof obj[part] != "object") obj[part] = {};
        obj = obj[part]; // update "pointer"
    }
    obj["_x"] = value;
}