value

sets the initial value for a control

string|number|array value;

Example

webix.ui({ 
  view:"multiselect", id:"multi", label:"Participant",
  value: [1,2], // selects elements with these IDs initially
  options:[
    { id:1, value:"Alex Brown" },
    { id:2, value:"Dan Simons" },
    { id:3, value:"John Doe" },  
  ] 
});

Related samples

Editable Combo Box ('combo')

Details

All controls fall into:

single-value - those containing a string or a number;
multiple-value - those containing an array of values;

In case of multiple-value controls, the property points to the ID of the initially chosen option.

Value of the control may be:

text value in the input text and textarea field;
selected item like date in calendar and color in the colorboard;
state of the two-state control (checkbox, radio, toggle);
selected option of integral buttons (tabbar, tabview, segmented;
selected option of select, richselect, and combo;
string with selected options of a multiselect and multicombo control.