ui.Label(value, style, targetUrl)

A text label.

Arguments:

value (String, optional):

The text to display. Defaults to an empty string.

style (Object, optional):

An object of allowed CSS styles with their values to be set for this widget. See style() documentation.

targetUrl (String, optional):

The url to link to. Defaults to an empty string.

Returns: ui.Label

代码：

var label = ui.Label({  
//value是hello world 也就是标签的内容