blocks|key|564538|text|试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|564539|console.log("Session:+%25j",+session);|code-block|syntax|javascript|564540|如果可以将对象转换为JSON，就可以了。|564541|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Try this one:

<pre><code>console.log("Session: %j", session);
</code></pre>

If the object could be converted into JSON, that will work.

blocks|key|564596|text|为了得到与原始console.log(obj)更相似的输出，我通常使用console.log('Status:+'+%2B+util.inspect(obj))+(JSON略有不同)。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|564597|entityMap^0|7|G|Z|17|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|M|8|@]|D|@]|E|$]]]|G|$]]

To have an output more similar to the raw <code>console.log(obj)</code> I usually do use <code>console.log('Status: ' + util.inspect(obj))</code> (JSON is slightly different).

blocks|key|781073|text|function+prettyJSON(obj)+{
++++console.log(JSON.stringify(obj,+null,+2));
}

//+obj+->+value+to+convert+to+a+JSON+string
//+null+->+(do+nothing)
//+2+->+2+spaces+per+indent+level|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|781074|JSON.stringify+on+MDN|unstyled|offset|length|781075|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify^0|0|0|L|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|R|8|@]|9|@$G|S|H|T|1|U]]|A|$]]|$1|I|3|-4|5|F|7|V|8|@]|9|@]|A|$]]]|J|$K|$5|L|M|N|A|$O|P]]]]

<pre><code>function prettyJSON(obj) {
 console.log(JSON.stringify(obj, null, 2));
}

// obj -&gt; value to convert to a JSON string
// null -&gt; (do nothing)
// 2 -&gt; 2 spaces per indent level
</code></pre>

<a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify" rel="noreferrer">JSON.stringify on MDN</a>

blocks|key|781102|text|console.dir()是最直接的方法。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|781103|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

console.dir() is the most direct way.

blocks|key|781133|text|这将适用于任何对象：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|781134|++++var+util+=+require("util");
++++console.log(util.inspect(myObject,+{showHidden:+false,+depth:+null}));|code-block|syntax|javascript|781135|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

This will work with any object:

<pre><code> var util = require("util");
 console.log(util.inspect(myObject, {showHidden: false, depth: null}));
</code></pre>

blocks|key|781152|text|console.log(obj);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|781153|运行:+node+app.js+>+output.txt|unstyled|781154|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>console.log(obj);
</code></pre>

Run: node app.js > output.txt

blocks|key|781195|text|这将用于在nodejs控制台中输出的大多数对象|type|unstyled|depth|inlineStyleRanges|entityRanges|data|781196|​|781197|var+util+=+require('util')
function+print+(data){
++console.log(util.inspect(data,true,12,true))
++
}

print({name+:+"Your+name"+,age+:+"Your+age"})|code-block|syntax|javascript|781198|781199|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|N|8|@]|9|@]|A|$G|H]]|$1|I|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|P|8|@]|9|@]|A|$]]]|K|$]]

This will for most of the objects for outputting in nodejs console

<div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-js lang-js prettyprint-override"><code>var util = require('util')
function print (data){
 console.log(util.inspect(data,true,12,true))
 
}

print({name : "Your name" ,age : "Your age"})</code></pre>
</div>
</div>

Is it possible to print an objects contents e.g. methods and attributes in Node.js?

At the moment I'm trying to print the session object and get the following:

<pre><code>console.log("Session:" + session);
&gt; Session:[object Object]
</code></pre>

Maybe in a similar way to print_r(array) in PHP, or using .toString in Java.

How do you log content of a JSON object in Node.js?

JSON

Java

是否可以打印对象内容，例如Node.js中的方法和属性？目前，我正在尝试打印session对象，并获得以下内容：console.log("Session:" + session);> Session:[object Object]可能与PHP中的print_r(数组)类似，或者在Java中使用.toString。

问如何在Node.js中记录JSON对象的内容？
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