You wrote:

&gt; I have to select the first child of
&gt; Department node

You could use:

    /Employee/Department/*[1]

Then, you also wrote:

&gt; I have an XML from which I have to
&gt; select the name of the child of one of
&gt; the nodes

So, you could use:

    name(/Employee/Department/*[1])


I don&#39;t know the exact context of your XML, but I believe this is the XPath you are looking for...

    /Employee/Department/*[1]

The key part of this XPath is `*[1]`, which will select the node value of the first child of `Department`.

If you need the name of the node, then you will want to use this...

    name(/Employee/Department/*[1])

You need something like:

    local-name(/Employee/Department/*[1])

I am having a problem with PHP at the moment, I am getting this error, 

`Object of class stdClass could not be converted to string` the error occurs when I run this portion of code in my site, 

    function myaccount() {
        $data[&#39;user_data&#39;] = $this-&gt;auth-&gt;get_userdata($this-&gt;uri-&gt;segment(3));
        //var_dump($data[&#39;user_data&#39;]);
        $this-&gt;load-&gt;model(&#39;users_model&#39;);
        $data[&#39;user_info&#39;] = $this-&gt;users_model-&gt;get_user_and_roadmaps_by_id($this-&gt;uri-&gt;segment(3));
        $this-&gt;template-&gt;build(&#39;users/my_account&#39;, $data);
    }

The line in which the error is occuring is this one, 

    $data[&#39;user_data&#39;] = $this-&gt;auth-&gt;get_userdata($this-&gt;uri-&gt;segment(3));

And this line is calling this function, 

 

       function get_userdata() {
            
            $CI =&amp; get_instance();
            
            if(!$this-&gt;logged_in()) {
                return false;
            } else {
                $query = $CI-&gt;db-&gt;get_where(&#39;users&#39;, array(&#39;user_id&#39; =&gt; $CI-&gt;session-&gt;userdata(&#39;user_id&#39;)));
                return $query-&gt;row();
            }
        }

I don&#39;t really now what this problem is, so any help would be great.



Object of class stdClass could not be converted to string

The [Play Framework](http://www.playframework.org/) offers the following quick overview, but with the exception of the Groovy template engine (which you can get in Spring MVC if you want), Spring seems to offer all the same features and more...

 * __Fix the bug and hit reload!__ Edit your Java files, save, refresh your browser and see the results immediately! No need to compile, deploy or restart the server. _Spring does this, which can get annoying._

 * __Stateless model__ Play is a real &quot;Share nothing&quot; system. Ready for REST, it is easily scaled by running multiple instances of the same application on several servers. _Typical Spring applications have a stateless application tier; it&#39;s not purely RESTful unless you want to be, but Spring is &quot;ready for REST&quot;._

 * __Efficient template system__ A clean template system based on Groovy as an expression language. It provides template inheritence, includes and tags. _Spring uses Java, but Groovy is an option too._

 * __Resolve errors quickly__ When an error occurs, play shows you the source code and the exact line containing the problem. Even in templates. _Spring does this as well._

 * __All you need to create a cool web application__ Provides integration with Hibernate, OpenID, Memcached... And a plugin system. _Spring integrates with everything and more._

 * __Pure Java__ Code with Java, use any Java library and develop with your preferred IDE. Integrates nicely with eclipse or netbeans. _Spring is pure Java as well._

 * __Really fast__ Starts fast and runs fast! _Subjective, but Spring is pretty quick._

So what does the Play Framework actually do differently than Spring MVC?          
In a nutshell what can Spring do that Play framework cannot (and vice-versa)? 


Web Frameworks: How is Play different from Spring MVC?

I have an XML from which I have to select the name of the child of one of the nodes. I&#39;m kind of a beginner in this, so I didn&#39;t find the Xpath expression to do it. I know the level of the node 

**Example**

Name from `/Employee/Department/` 

but Department has children nodes of unknown names. I have to select the first child of Department node. How can I do this?

How to select a node&#39;s first child name? XPath

I have an XML from which I have to select the name of the child of one of the nodes. I'm kind of a beginner in this, so I didn't find the Xpath expression to do it. I know the level of the node
Example
Name from <code>/Employee/Department/</code>
but Department has children nodes of unknown names. I have to select the first child of Department node. How can I do this?

Consider the following XML:

    &lt;response&gt;
      &lt;status_code&gt;200&lt;/status_code&gt;
      &lt;status_txt&gt;OK&lt;/status_txt&gt;
      &lt;data&gt;
        &lt;url&gt;http://bit.ly/b47LVi&lt;/url&gt;
        &lt;hash&gt;b47LVi&lt;/hash&gt;
        &lt;global_hash&gt;9EJa3m&lt;/global_hash&gt;
        &lt;long_url&gt;http://www.tumblr.com/docs/en/api#api_write&lt;/long_url&gt;
        &lt;new_hash&gt;0&lt;/new_hash&gt;
      &lt;/data&gt;
    &lt;/response&gt;

I&#39;m looking for a really short way to get just the value of the `&lt;hash&gt;` element. I tried:

    var hash = xml.Element(&quot;hash&quot;).Value;
But that&#39;s not working. Is it possible to provide an XPath query to an `XElement`? I can do it with the older `System.Xml` framework, doing something like:

    xml.Node(&quot;/response/data/hash&quot;).Value
Is there something like this in a LINQ namespace?


----------

UPDATE:

After monkeying around with this some more I found a way to do what I&#39;m trying to do:

    var hash = xml.Descendants(&quot;hash&quot;).FirstOrDefault().Value;

I&#39;d still be interested to see if anyone has a better solution?


How to use XPath with XElement or LINQ?

I have a small problem with XPath contains with dom4j ...

Let&#39;s say my XML is 

    &lt;Home&gt;
    	&lt;Addr&gt;
    		&lt;Street&gt;ABC&lt;/Street&gt;
    		&lt;Number&gt;5&lt;/Number&gt;
    		&lt;Comment&gt;BLAH BLAH BLAH &lt;br/&gt;&lt;br/&gt;ABC&lt;/Comment&gt;
    	&lt;/Addr&gt;
    &lt;/Home&gt;

Let&#39;s say I want to find all the nodes that have ABC in the text given the root Element...

So the XPath that I would needed to write would be 

`//*[contains(text(),&#39;ABC&#39;)]`

However this is not what dom4j returns .... is this a dom4j problem or my understanding how XPath works, since that query returns only the `Street` element and not the `Comment` element?

The DOM makes the `Comment` element a composite element with four tags two 

    [Text = &#39;XYZ&#39;][BR][BR][Text = &#39;ABC&#39;] 

I would assume that the query should still return the element since it should find the element and run contains on it, but it doesn&#39;t ... 

The following query returns the element, but it returns far more then just the element &amp;ndash; it returns the parent elements as well, which is undesirable to the problem.

    //*[contains(text(),&#39;ABC&#39;)]

Does any one know the XPath query that would return just the elements `&lt;Street/&gt;` and `&lt;Comment/&gt;` ?




XPath contains(text(),&#39;some string&#39;) doesn&#39;t work when used with node with more than one Text subnode

I&#39;m writing a Selenium testcase. And here&#39;s the xpath expression I use to match all &#39;Modify&#39; buttons within a data table.

    //img[@title=&#39;Modify&#39;]
My question is, how can I visit the matched node sets by index? I&#39;ve tried with 

    //img[@title=&#39;Modify&#39;][i]
and 

    //img[@title=&#39;Modify&#39; and position() = i]
But neither works.. 
I also tried with XPath checker(One firefox extension). There&#39;re totally 13 matches found, then I have totally no idea how am I gonna select one of them.. 
**Or does XPath support specified selection of nodes which are not under same parent node?**

How to select specified node within Xpath node sets by index with Selenium?

Given the following XML, how do I write an XPath query to pull nodes where the attribute `foo` exists?:

    &lt;node1&gt;
      &lt;node2&gt;
        &lt;node3 foo=&#39;bar&#39;&gt;&lt;/node3&gt;
        &lt;node3&gt;&lt;/node3&gt;
        &lt;node3 bar=&#39;foo&#39;&gt;&lt;/node3&gt;
        &lt;node3 foo=&#39;foobar&#39;&gt;&lt;/node3&gt;
      &lt;/node2&gt;
    &lt;/node1&gt;




XPath: How to check if an attribute exists?

How can I check if a node value is a number using XPath?

Any ideas?

XPath test if node value is number

I was wondering, JavaScript offers a variety of methods to get the first child element from any element, but which is the best? By best, I mean: most cross-browser compatible, fastest, most comprehensive and predictable when it comes to behaviour. A list of methods/properties I use as aliases:

    var elem = document.getElementById(&#39;container&#39;);
    var child = elem.children[0];
    var child = elem.firstElementChild; // == children[0]

This works for both cases:

    var child = elem.childNodes[0]; // or childNodes[1], see below

That’s in case of forms, or `&lt;div&gt;` iteration. If I might encounter text elements:

    var child = elem.childNodes; // treat as NodeList
    var child = elem.firstChild;

As far as I can work out, `firstChild` uses the NodeList from `childNodes`, and `firstElementChild` uses `children`. I’m basing this assumption on the MDN reference:

&gt; `childNode` is a reference to the first child element of the element node, or `null` if there isn’t one.

I’m guessing that, in terms of speed, the difference, if any, will be next to nothing, since `firstElementChild` is effectively a reference to `children[0]`, and the `children` object is already in memory anyway.

What does throw me, is the `childNodes` object. I’ve used it to take a look at a form, in a table element. While `children` lists all form elements, `childNodes` also seems to include whitespace from the HTML code:

    console.log(elem.childNodes[0]);
    console.log(elem.firstChild);

Both log `&lt;TextNode textContent=&quot;\n &quot;&gt;`

    console.log(elem.childNodes[1]);
    console.log(elem.children[0]);
    console.log(elem.firstElementChild);

All log `&lt;input type=&quot;text&quot;`…`&gt;`. How come? I’d understand that one object would allow me to work with the “raw” HTML code, while the other sticks to the DOM, but the `childNodes` element seems to work on both levels.

To get back to my initial question, my guess would be: if I want the most comprehensive object, `childNodes` is the way to go, but because of its comprehensiveness, it might not be the most predictable in terms of it returning the element I want/expect at any given moment. Cross-browser support might also prove to be a challenge in that case, though I could be wrong.

Could anyone clarify the distinction between the objects at hand? If there is a speed difference, however negligible, I’d like to know, too. If I’m seeing this all wrong, feel free to educate me.

---

PS: Please, please, I like JavaScript, so yes, I want to deal with this sort of thing. Answers like “jQuery deals with this for you” are not what I’m looking for, hence no [tag:jquery] tag.

Best way to get child nodes

I don&#39;t know if there is an issue, but I was wondering why the `overflow:hidden` does not function on `fixed` parent/children element.

Here&#39;s an example:

**CSS and HTML:**

&lt;!-- begin snippet: js hide: false --&gt;

&lt;!-- language: lang-css --&gt;

    .parent{
      position:fixed;
      overflow:hidden;
      width:300px;
      height:300px;
      background:#555;
    }
    .children{
      position:fixed;
      top:200px;
      left:200px;
      width:150px;
      height:150px;
      background:#333;
    }

&lt;!-- language: lang-html --&gt;


    &lt;div class=&quot;parent&quot;&gt;
      &lt;div class=&quot;children&quot;&gt;
      &lt;/div&gt;
    &lt;/div&gt;


&lt;!-- end snippet --&gt;

**Live demo: [jsFiddle](http://jsfiddle.net/kirkas/DBHUv/)**

parent &amp; child with position fixed, parent overflow:hidden bug

I&#39;m trying to loop through childNodes like this:

    var children = element.childNodes;
    children.forEach(function(item){
        console.log(item);
    });
However, it output `Uncaught TypeError: undefined is not a function` due to `forEach` function. I also try to use `children` instead of `childNodes` but nothing changed.

Does anybody know what&#39;s going on?

Loop through childNodes

I am a newbie in Angular 2. I want to create isolated modules for every part of my app. For example I created the `AuthModule` with default component - `AuthComponent` which contain a `router-outlet` for his child components (SignIn or SignUp). So I want to realise the following scenario:

 1. When navigate to / - root off app - redirect to /auth
 2. After redirect to /auth - load AuthComponent with router outlet
 3. After AppComponent loaded - load default sign-in component via redirecting to /auth/sign-in

But when I going to localhost/ I get redirect to /auth what I want, but the next redirect to sign-in doesn&#39;t appear. 

My code:
`app.routing`

    const routes: Routes = [
      {
          path: &#39;&#39;, 
          redirectTo: &#39;/auth&#39;, 
          pathMatch: &#39;full&#39;
      }
    ];

    export const appRouting: ModuleWithProviders = RouterModule.forRoot(routes);

`auth.routing`

    const routes: Routes = [
      {
        path: &#39;auth&#39;,
        component: AuthComponent,
        children: [
          {
             path: &#39;&#39;, 
             redirectTo: &#39;sign-in&#39;, 
             pathMatch: &#39;full&#39;
          },
          {
             path: &#39;sign-in&#39;, 
             component: SignInComponent
          }
        ]
      },
    
    ];
    
    export const authRouting: ModuleWithProviders = RouterModule.forChild(routes);

`auth.component.html`

    &lt;div class=&quot;container&quot;&gt;
        &lt;h1&gt;Auth component&lt;/h1&gt;
        &lt;router-outlet&gt;&lt;/router-outlet&gt;
    &lt;/div&gt;

Result:

[![code][1]][1]

[![result][2]][2]

&gt; Environment @angular/cli: 1.0.0-rc.2 node: 7.7.1 os: win32 x64


  [1]: https://i.stack.imgur.com/clH79.png
  [2]: https://i.stack.imgur.com/OsJ7R.png

Content Type	Original Author	Original Content on Stackoverflow
Question	Jaq	View Question on Stackoverflow
Solution 1 - Xpath	user357812	View Answer on Stackoverflow
Solution 2 - Xpath	Ryan Berger	View Answer on Stackoverflow
Solution 3 - Xpath	mwittrock	View Answer on Stackoverflow

How to select a node's first child name? XPath

Xpath Problem Overview

Xpath Solutions

Solution 1 - Xpath

Solution 2 - Xpath

Solution 3 - Xpath

Web Frameworks: How is Play different from Spring MVC?

Object of class stdClass could not be converted to string

Attributions