Convert JavaScript object into URI-encoded string

Question

I got a JavaScript object which I would like to get x-www-form-urlencoded.

Something like $(\'#myform\').serialize() but for objects.

Answer 1

FYI, the accepted answer doesn't include support for nested objects. Here's one way that you can accomplish this:

function xwwwfurlenc(srcjson, parent=""){
    if(typeof srcjson !== "object")
      if(typeof console !== "undefined"){
        console.log("\"srcjson\" is not a JSON object");
        return null;
    }

    let u = encodeURIComponent;
    let urljson = "";
    let keys = Object.keys(srcjson);

    for(let i=0; i < keys.length; i++){
      let k = parent ? parent + "[" + keys[i] + "]" : keys[i];

      if(typeof srcjson[keys[i]] !== "object"){
        urljson += u(k) + "=" + u(srcjson[keys[i]]);
      } else {
        urljson += xwwwfurlenc(srcjson[keys[i]], k)
      }
      if(i < (keys.length-1))urljson+="&";
    }

    return urljson;
}