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Append and prepend text nodes to a HTML element using DOM?
Asked Answered
Solved phphtmldomappendprepend
L

1

17

Here is my HTML code

<html> 
    <body>
        <div>A sample block <div>and child block</div></div>    
    </body>
</html>

How can I use DOM to append and prepend text nodes to the BODY elements without hurting its siblings?

$dom = new DOMdocument();    
@$dom->loadHTML($html);    
$xpath = new DOMXPath($dom);    
$body = $xpath->query('//body')->item(0);

like this

<html> 
    <body>
        Newly prepended text
        <div>A sample block <div>and child block</div></div>
        Newly appended text    
    </body>
</html>
Lancey answered 25/12, 2010 at 11:2 Comment(1)
Btw you don't need HTML entities to display HTML in your post. Just intend any code by 4 spaces or just mark your code and click the {} button. See my edit as example. – Teevens
T
24

You can create text nodes with DOMText (or by using DOMDocument::createTextNode):

$before = new DOMText('Newly prepended text');
// $before = $dom->createTextNode('Newly prepended text');
$after = new DOMText('Newly appended text');
// $after = $dom->createTextNode('Newly appended text');

Now, appending is just:

$body->appendChild($after);

For prepending, we can use DOMNode::firstChild to get the first child of the body and DOMNode::insertBefore:

$body->insertBefore($before, $body->firstChild);
Teevens answered 25/12, 2010 at 11:12 Comment(1)
In case anyone came here trying to find how to do this with JavaScript, you can just use prepend on the parent node. – Impertinent

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