Create a text input control — textInput
R/input-text.R
  Description
Create an input control for entry of unstructured text values
Arguments
- inputId
- The - inputslot that will be used to access the value.
- label
- Display label for the control, or - NULLfor no label.
- value
- Initial value. 
- width
- The width of the input, e.g. - '400px', or- '100%'; see- validateCssUnit().
- placeholder
- A character string giving the user a hint as to what can be entered into the control. Internet Explorer 8 and 9 do not support this option. 
Value
A text input control that can be added to a UI definition.
Server value
A character string of the text input. The default value is ""
unless value is provided.
See also
Other input elements: 
actionButton(),
checkboxGroupInput(),
checkboxInput(),
dateInput(),
dateRangeInput(),
fileInput(),
numericInput(),
passwordInput(),
radioButtons(),
selectInput(),
sliderInput(),
submitButton(),
textAreaInput(),
varSelectInput()