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Serializing and Caching Tree

Serializing Tree

The user can get an XML representation (as a string) of the tree using the method serializeTree():

tree.serializeTree();

Also there is a possibility to return the tree as a JSON string like this:

tree.serializeTreeToJSON();

Related sample:   User data

Setting Serialization Level

XML serialization can be easily configured in the following way:

tree.setSerializationLevel(userData,fullXML,escapeEntities,userDataAsCData,DTD);

The parameters are as follows:

  • userData - enable/disable user data serialization;
  • fullXML - enable/disable full XML serialization;
  • escapeEntities - convert tag brackets into related HTML entities;
  • userDataAsCData - output user data in CDATA sections;
  • DTD - if specified set as XML's DTD.

Preventing Caching in IE

The user can prevent caching in IE by adding random value to URL string with the help of the preventIECaching() method:

tree.preventIECaching(true/false); // false by default

Registering XML Entity

There is a possibility in dhtmlxTree to register an XML entity for replacement of special symbols during the initialization of the tree (the default ones are: ampersand, "less then" and "greater then" symbols):

tree.registerXMLEntity(rChar,rEntity);

The parameters are the following:

  • rChar - source char;
  • rEntity - target entity.

Removing Tree

There is a simple method that allows the user to remove the tree completely and to clear memory:

tree.destructor();
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