Unable to bind javascript variable to JSON object key

Question

I am trying to add a value in place of json object key but it always returns variable name. My Code:

var projectName='';
let tempArray=[];
let output={};        
for(i=0;i<myJsonArray.length;i++){
        name = myJsonArray[i].Project;
        tempArray.push(myJsonArray[i]);
    }
    output= {projectName :tempArray};
    console.log(JSON.stringify(output));

This returns a JSON as

{"projectName":[{"Day":"MON","Project":"ABC","Billing Rate":"xxx"},{"Day":"TUE","Project":"ABC","Billing Rate":"xyx"}]}

But I need something like this:

{"ABC":[{"Day":"MON","Project":"ABC","Billing Rate":"xxx"},{"Day":"TUE","Project":"ABC","Billing Rate":"xyx"}]}

Can someone help on what I am missing here.

Kind Regards.

`{projectName :tempArray}` Here `projectName` is the key and `tempArray` is the value. So if you need `{ "ABC": ...}`, it shoulfd be `{ "ABC": tempArray}` — Rajesh, Nov 03 '22 at 07:54
`output= {[name] :tempArray};` probably [does](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Object_initializer#computed_property_names) what you need. — Teemu, Nov 03 '22 at 07:54
You just want another propertyname? `output= {'ABC' :tempArray}` — BeSter Development, Nov 03 '22 at 07:55
The one-liner you are looking for is: `const output = Object.fromEntries(myJsonArray.map(i=>[i.Project, i]));` — Andrew Parks, Nov 03 '22 at 08:04

score 1 · Accepted Answer · answered Nov 03 '22 at 07:54

1

You should wrap the project name into [] that would help to make a value become a key

var name = '';
let tempArray = [];
let output = {};
for (i = 0; i < myJsonArray.length; i++) {
  name = myJsonArray[i].Project;
  tempArray.push(myJsonArray[i]);
}
output = {
  [name]: tempArray
};
console.log(JSON.stringify(output));

P/s: I don't see any projectName variable there, so I replace it by name instead.

answered Nov 03 '22 at 07:54

Nick Vu

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Please vote to close duplicates. This has been asked a million times. – adiga Nov 03 '22 at 07:56

Unable to bind javascript variable to JSON object key

1 Answers1