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.. _api-html:
***********************
The MathJax.HTML Object
***********************
The ``MathJax.HTML`` object provides routines for creating HTML
elements and adding them to the page, and in particular, it contains
the code that processes MathJax's :ref:`HTML snippets <html-snippets>`
and turns them into actual DOM objects. It also implements the
methods used to manage the cookies used by MathJax.
Properties
==========
.. describe:: Cookie.prefix: "mjx"
The prefix used for names of cookies stored by MathJax.
.. describe:: Cookie.expires: 365
The expiration time (in days) for cookies created by MathJax.
Methods
=======
.. method:: Element(type[,attributes[,contents]])
Creates a DOM element of the given type. If `attributes` is
non-``null``, it is an object that contains `key:value` pairs of
attributes to set for the newly created element. If `contents` is
non-``null``, it is an :ref:`HTML snippet <html-snippets>` that
describes the contents to create for the element. For example
.. code-block:: javascript
var div = MathJax.HTML.Element(
"div",
{id: "MathDiv", style:{border:"1px solid", padding:"5px"}},
["Here is math: \\(x+1\\)",["br"],"and a display $$x+1\\over x-1$$"]
);
:Parameters:
- **type** --- node type to be created
- **attributes** --- object specifying attributes to set
- **contents** --- HTML snippet representing contents of node
:Returns: the DOM element created
.. method:: addElement(parent,type[,attributes[,content]])
Creates a DOM element and appends it to the `parent` node
provided. It is equivalent to
.. code-block:: javascript
parent.appendChild(MathJax.HTML.Element(type,attributes,content))
:Parameters:
- **parent** --- the node where the element will be added
- **attributes** --- object specifying attributes to set
- **contents** --- HTML snippet representing contents of node
:Returns: the DOM element created
.. method:: TextNode(text)
Creates a DOM text node with the given text as its content.
:Parameters:
- **text** --- the text for the node
:Returns: the new text node
.. method:: addText(parent,text)
Creates a DOM text node with the given text and appends it to the
`parent` node.
:Parameters:
- **parent** --- the node where the text will be added
- **text** --- the text for the new node
:Returns: the new text node
.. method:: setScript(script,text)
Sets the contents of the ``script`` element to be the given
``text``, properly taking into account the browser limitations and
bugs.
:Parameters:
- **script** --- the script whose content is to be set
- **text** --- the text that is to be the script's new content
:Returns: ``null``
.. method:: getScript(script)
Gets the contents of the ``script`` element, properly taking into
account the browser limitations and bugs.
:Parameters:
- **script** --- the script whose content is to be retrieved
:Returns: the text of the ``script``
.. describe:: Cookie.Set(name,data)
Creates a MathJax cookie using the ``MathJax.HTML.Cookie.prefix``
and the `name` as the cookie name, and the `key:value` pairs in
the `data` object as the data for the cookie. For example,
.. code-block:: javascript
MathJax.HTML.Cookie.Set("test",{x:42, y:"It Works!"});
will create a cookie named "mjx.test" that stores the values of
``x`` and ``y`` provided in the `data` object. This data can be
retrieved using the :meth:`MathJax.HTML.Cookie.Get()` method
discussed below.
:Parameters:
- **name** --- the name that identifies the cookie
- **data** --- object containing the data to store in the cookie
:Returns: ``null``
.. describe:: Cookie.Get(name[,obj])
Looks up the data for the cookie named `name` and merges the data
into the given `obj` object, or returns a new object containing
the data. For instance, given the cookie stored by the example
above,
.. code-block:: javascript
var data = MathJax.HTML.Cookie.Get("test");
would set ``data`` to ``{x:42, y:"It Works!"}``, while
.. code-block:: javascript
var data = {x:10, z:"Safe"};
MathJax.HTML.Cookie.Get("test",data);
would leave ``data`` as ``{x:42, y:"It Works!", z:"Safe"}``.
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