How to parse JSON from request in nodeJS? By default methods (without Express etc. packgs)

Question

So client-side-js just send POST with JSON object

$.ajax({
    type: 'POST',
    url: '/onadd',
    data: addJsonObj.toJSON,
    success: function(){
        console.log("Task added!", data);
    }
});

to my nodeJS server.

I see my incoming request on nodeJS server. So how can I parse JSON object from request on my nodeJS server? Need smth like that:

if(request.method == 'POST' && request.url == '/onadd'){
    var jsonObj = JSON.parse(request.body);  //can't parse JSON here!(
    console.log(jsonObj.task);   
    console.log('hoorayyyy!!!!!!');  //got this!
}

Matthieu · Accepted Answer · 2015-06-16 23:54:52Z

1

You have to declare data type

$.ajax({
        type: 'POST',
        url: '/onadd',
        data: addJsonObj.toJSON,
        dataType: "json",
        success: function(){
            console.log("Task added!", data);
        }
});

answered Jun 16, 2015 at 23:54

Matthieu

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1 Comment

Matthieu Over a year ago

No problem. i hope i helped

Patrick Roberts · Accepted Answer · 2015-06-17 00:47:05Z

0

You need to set the dataType like @Matthieu suggested:

$.ajax({
    type: 'POST',
    url: '/onadd',
    data: JSON.stringify(addJsonObj),
    dataType: 'json',
    success: function(){
        console.log('Task added!', data);
    }
});

You also need to stream the request body like so:

if(request.method == 'POST' && request.url == '/onadd'){
    var json = '';
    request.on('data', function (chunk){
        json += chunk.toString('utf8');
    });
    request.on('end', function (){
       console.log(json);
       var jsonObj = JSON.parse(json);
       console.log(jsonObj.task);
    });
}

edited Jun 17, 2015 at 0:47

answered Jun 17, 2015 at 0:06

Patrick Roberts

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9 Comments

Spacemaster Over a year ago

undefined:0 ^ SyntaxError: Unexpected end of input

Patrick Roberts Over a year ago

@Spacemaster what does the console.log I just added say?

Patrick Roberts Over a year ago

@Spacemaster In the front-end log what addJsonObj.toJSON is. Perhaps that isn't what you meant to send.

Spacemaster Over a year ago

So I sended this JSON object { isCompleted: fixed, task: task, date: dateStr }

Patrick Roberts Over a year ago

Is addJsonObj.toJSON a string or an object?

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