Why is object key pair with null value not passed from server to client anymore?-CodePudding

I have a Google application script web application where I use google.script.run.withSuccessHandler. Server side function returns an object where all the values are null. MaterializeCSS

Is someone experiencing the same error? How to fix this?

CodePudding user response：

Issue:

If null is a value for a key in a object, the key-value pair is lost when the object is passed from server to client, though null is a legal parameter.I can confirm the issue.

Solution:

The issue is reported here. Add a star to the issue, if anyone else has the same issue.

As a typical workaround for illegal parameters, Use JSON.stringify() on the server side, pass the string to the client and JSON.parse() it client side to get nulls inside a object.

Server:

function returnObject(){
  return JSON.stringify({a:1,b:null,c:3});
}

Client:

document.addEventListener("DOMContentLoaded",    
 function(event) { 
  google.script.run
    .withSuccessHandler(afterDataReceived)
    .returnObject()
});

function afterDataReceived(receivedData){
  console.log(JSON.parse(receivedData));
}