How to expose data from object in Javascript?

Question

I want to pull the variables of connectData for some debugging. When I do type of I get object back thinking this was an array and I can do connectData[1] I get undefined,

So if I want to log out just the host name from connectData can someone please show me an example?

var connectData = {
    hostname: 127.0.0.1,
    port: 1521,
    database: "db", // System ID (SID)
    user: "usename",
    password: "password"
}

knolleary · Accepted Answer · 2014-03-10 21:12:41Z

2

This is a javascript object, not an array.

You can access the individual elements by name. So to log just the hostname, you can do:

console.log(connectData.hostname);

answered Mar 10, 2014 at 21:12

knolleary

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1 Comment

knolleary Over a year ago

I'm not sure what you mean about format being the issue. Is there some other aspect you are having trouble with? In your example above, the text 127.0.0.1 is not a valid javascript value - it should be wrapped in quotes as a string.

ktm5124 · Accepted Answer · 2014-03-10 21:17:56Z

1

You can use a for-each loop to iterate through an object's properties.

var connectData = {
    hostname: '127.0.0.1',
    port: '1521',
    database: "db", // System ID (SID)
    user: "usename",
    password: "password"
};

for (var key in connectData) {
    if (connectData.hasOwnProperty(key)) {
        alert(key + " => " + connectData[key]);
    }
}

Working demo: http://jsfiddle.net/Mp6jS/1/

edited Mar 10, 2014 at 21:17

answered Mar 10, 2014 at 21:11

ktm5124

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4 Comments

justZito Over a year ago

Here are the results, is there a way to get the value of the keys?hostname=>undefined port=>undefined database=>undefined user=>undefined password=>undefined

Whymarrh Over a year ago

I think connectData.key should be connectData[key].

ktm5124 Over a year ago

@justZito Sorry about that. I corrected the code and included a working example.

justZito Over a year ago

ktm5124, the last thing you need to do is apologize that worked great.

ethan · Accepted Answer · 2014-03-10 21:11:28Z

0

Log it to the console. console.log(connectData)

In Chrome, you can view the console by right clicking, selecting "Inspect element", and clicking on the "Console" tab.

answered Mar 10, 2014 at 21:11

ethan

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