jtree allows you to customize the behavior of HTML elements using special attributes. Any attribute that begins with jt- will be updated whenever a player update is received.
Attributes take the form of jt-<name>="<expression>". The expression can be a single variable (i.e. 'period.id'), or a longer expression that includes several variables (i.e. 'period.id + player.points'). It has access to player, group, period, app, session and stage objects. The particular behavior of the update depends on the value of <name>.
jt-displayIf
Adding this attribute to an element dynamically hides and shows the element whenever player data is changed. If the value of this attribute returns true, the element is shown. Otherwise, the element is hidden. All such elements can be refreshed by calling the function jt.evaluateDisplayConditions().
jt-text or jt-value
The text value of the element is replaced by the value of the expression.
jt-html
The HTML value of the element is replaced by the value of the expression.
jt-decimals
The element's text is formatted to the given number of decimal places.
jt-<attribute>
Any other attribute of this form will create a new attribute on the element with the name <attribute> and a value equal to the evaluated expression. This is useful, for example, when a number input should have a dynamic minimum and/or maximum value.