CODEWITHSUNDEEP
javascripthtmldom
Jan Bauer
Jan Bauer

Reputation: 41

JavaScript meaning of #text in htmlNode.childNodes[i].nodeName

I am new to JavaScript and when I was playing around with the DOM model I was getting confused when I wanted to display all nodeNames from the HTML childNodes. There is a nodeName called #text when i have an head tag and when I delete the complete head tag there is the normal HEAD and BODY nodeName. What means the #text nodeName especally when I have a head tag?

Here is my code: 

<html>
    <head>
    </head>
    <body>          
        <p id="p1">SOME TEXT</p>    
        <button type="button" onclick="javascript:changeNode()">Click </button>
        <script type="text/javascript">
        function changeNode() {
            var htmlNode = document.documentElement;                
            var anzahl = htmlNode.childNodes.length;

            var html_text = "<p>";
            for(var i = 0;i<anzahl;i++){
                html_text += " " + htmlNode.childNodes[i].nodeName +";";
            }
            html_text += "</p>";
            document.getElementById("p1").innerHTML = html_text;
        }
        </script>
    </body>
</html>

The output of it is (with the head tag):

HEAD; #text; BODY;

The output of it is (without the head tag):

HEAD; BODY;

Upvotes: 3

Views: 1538

Answers (2)

Saumya Shekhar
Saumya Shekhar

Reputation: 90

Whitespace inside elements is considered as #text, and text is considered as nodes. Remove the space between </head> & <body> tag like below:

<html>
 <head></head><body>         
    <p id="p1">SOME TEXT</p>    
    <button type="button" onclick="javascript:changeNode()">Click </button>
 </body>

This will give you the output HEAD,BODY

Upvotes: 1

gurvinder372
gurvinder372

Reputation: 68383

What means the #text nodeName especally when i have a head tag.

these are the empty line breaks that you have unintentionally introduced in your markup.

Use children instead of childNodes if you don't want to include text nodes.

Upvotes: 3

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