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# domhandler [](https://travis-ci.org/fb55/domhandler)
The DOM handler (formally known as DefaultHandler) creates a tree containing all nodes of a page. The tree may be manipulated using the [domutils](https://github.com/fb55/domutils) library.
## Usage
```javascript
var handler = new DomHandler([ <func> callback(err, dom), ] [ <obj> options ]);
// var parser = new Parser(handler[, options]);
```
Available options are described below.
## Example
```javascript
var htmlparser = require("htmlparser2");
var rawHtml = "Xyz <script language= javascript>var foo = '<<bar>>';< / script><!--<!-- Waah! -- -->";
var handler = new htmlparser.DomHandler(function (error, dom) {
if (error)
[...do something for errors...]
else
[...parsing done, do something...]
console.log(dom);
});
var parser = new htmlparser.Parser(handler);
parser.write(rawHtml);
parser.end();
```
Output:
```javascript
[{
data: 'Xyz ',
type: 'text'
}, {
type: 'script',
name: 'script',
attribs: {
language: 'javascript'
},
children: [{
data: 'var foo = \'<bar>\';<',
type: 'text'
}]
}, {
data: '<!-- Waah! -- ',
type: 'comment'
}]
```
## Option: normalizeWhitespace
Indicates whether the whitespace in text nodes should be normalized (= all whitespace should be replaced with single spaces). The default value is "false".
The following HTML will be used:
```html
<font>
<br>this is the text
<font>
```
### Example: true
```javascript
[{
type: 'tag',
name: 'font',
children: [{
data: ' ',
type: 'text'
}, {
type: 'tag',
name: 'br'
}, {
data: 'this is the text ',
type: 'text'
}, {
type: 'tag',
name: 'font'
}]
}]
```
### Example: false
```javascript
[{
type: 'tag',
name: 'font',
children: [{
data: '\n\t',
type: 'text'
}, {
type: 'tag',
name: 'br'
}, {
data: 'this is the text\n',
type: 'text'
}, {
type: 'tag',
name: 'font'
}]
}]
```
## Option: withDomLvl1
Adds DOM level 1 properties to all elements.
<!-- TODO: description -->
## Option: withStartIndices
Indicates whether a `startIndex` property will be added to nodes. When the parser is used in a non-streaming fashion, `startIndex` is an integer indicating the position of the start of the node in the document. The default value is "false".
## Option: withEndIndices
Indicates whether a `endIndex` property will be added to nodes. When the parser is used in a non-streaming fashion, `endIndex` is an integer indicating the position of the end of the node in the document. The default value is "false".
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