CODEWITHSUNDEEP
javascriptxmlnodes
User2
User2

Reputation: 591

XML node and text value. Is this right?

I have the following bit of XML. 2 questions which I can seem to anwser: Is it valid XML? (To have a value and children nodes inside 'FOO'. Question 2 (The more important one), How do I access the 'TEXT' value and the 'BOO' node separately in JavaScript? 

<FOO>
    TEXT
    <BOO>
    </BOO>
    <BOO>
    </BOO>
</FOO>

Tried .firstChild.nodeValue and this works fine. (Returned the value of TEXT) however the problem occurs if TEXT is null. It returns a [Object Element] instead (the BOO node). So basically - I want to get the TEXT text if its there, if not I want to get null, or equivalent.

Upvotes: 0

Views: 156

Answers (2)

sabotero
sabotero

Reputation: 4365

Yes it is a valid XML. This are some basic rule for a valid XML:

  • XML documents must have a root element
  • XML elements must have a closing tag
  • XML tags are case sensitive
  • XML elements must be properly nested
  • XML attribute values must be quoted

Having this XML document:

<CATALOG>
  VERSION_1
  <CD>
    <TITLE>Empire Burlesque</TITLE>
    <ARTIST>Bob Dylan</ARTIST>
    <COUNTRY>USA</COUNTRY>
    <COMPANY>Columbia</COMPANY>
    <PRICE>10.90</PRICE>
    <YEAR>1985</YEAR>
   </CD>
   <CD>
     <TITLE>Hide your heart</TITLE>
     <ARTIST>Bonnie Tyler</ARTIST>
     <COUNTRY>UK</COUNTRY>
     <COMPANY>CBS Records</COMPANY>
     <PRICE>9.90</PRICE>
     <YEAR>1988</YEAR>
   </CD>
</CATALOG>

You can access the document in JavaScript using some code like this:

x=xmlDoc.getElementsByTagName("CD");
i=0;

function displayCD()
{
   // What you want here --->
   textInRootElemnt=xmlDoc.getElementsByTagName("CATALOG")[0].childNodes[0].nodeValue;


   artist=(x[i].getElementsByTagName("ARTIST")[0].childNodes[0].nodeValue);
   title=(x[i].getElementsByTagName("TITLE")[0].childNodes[0].nodeValue);
   year=(x[i].getElementsByTagName("YEAR")[0].childNodes[0].nodeValue);
   txt="Artist: " + artist + "<br />Title: " + title + "<br />Year: "+ year;
   document.getElementById("showCD").innerHTML=txt;
}

Where xmlDoc is your loaded document.

Consider the following very basic tutorial about XML.

Upvotes: 2

rashare
rashare

Reputation: 23

Yes, it is valid xml.

Please rephrase your question clearly : How do I access the 'TEXT' and the separately in JavaScript?

Upvotes: 0

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