99 lines
1.9 KiB
Markdown
99 lines
1.9 KiB
Markdown
|
#DOMHandler [](http://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 library.
|
||
|
|
|
||
|
|
##Usage
|
||
|
|
```javascript
|
||
|
|
var handler = new DomHandler([ <func> callback(err, dom), ] [ <obj> options ]);
|
||
|
|
// var parser = new Parser(handler[, options]);
|
||
|
|
```
|
||
|
|
|
||
|
|
##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.done();
|
||
|
|
```
|
||
|
|
|
||
|
|
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: ignoreWhitespace
|
||
|
|
Indicates whether the DOM should exclude text nodes that consists solely of whitespace. 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: [{
|
||
|
|
type: 'tag',
|
||
|
|
name: 'br'
|
||
|
|
}, {
|
||
|
|
data: 'this is the text\n',
|
||
|
|
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'
|
||
|
|
}]
|
||
|
|
}]
|
||
|
|
```
|