BUILT-IN MATHEMATICA SYMBOL

InputField

InputField[]
represents a blank editable input field.

InputField[x]
represents an editable input field that currently contains the expression x.

InputField[Dynamic[x]]
takes the contents of the input field to be the dynamically updated current value of x, with the value of x being reset if new contents are entered.

InputField[x, String]
represents an input field whose contents are taken to be a string.

InputField[x, Number]
represents an input field whose contents are taken to be a number.

InputField[x, type]
represents an input field whose contents are taken to be of the specified type.

Details and Options Details and Options

The following are possible types:
Boxes raw boxes

Expression expression (default)

Hold[Expression] expression in held form

Number number

String string
The setting for the input field is not updated until its contents are explicitly entered, typically by pressing Enter or by moving focus away from the input field.
If the data given in the input field cannot be converted to the type specified, then the setting for the input field will not be updated.
For String and types the conversion can always be done.
For expressions, a blank input field is taken to have value Null. For strings and boxes, it is taken to have value .
Tab moves between input fields.
The following options can be given:

Appearance	Automatic	the overall appearance of the input field
Background	Automatic	input field background color
BaseStyle	{}	base style specifications for the input field
ContentPadding	True	whether to shrink the margins tightly around the contents
ContinuousAction	False	whether to update continuously every time any change is made to the input
Enabled	Automatic	whether the input field is enabled or grayed out
FieldHint	Null	expression to display when the input field is empty
FieldHintStyle	{}	style to apply to the field hint
FieldMasked	False	whether to mask characters in the input field
FieldSize	{{20., 20.},{1.,Infinity}}	the size of the input field
FrameMargins	Automatic	minimum margins to leave inside the frame
ImageMargins	0	margins around the image of the displayed input field
ImageSize	Automatic	the overall image size of the displayed input field

An InputField of type Expression replaces its contents with the fully evaluated form every time the contents are updated. ContinuousAction has no effect on such an InputField, so that no disorienting replacements happen while typing inputs.
Possible settings for Appearance include and .
InputField[] is equivalent to InputField[Null].
The settings for BaseStyle are appended to the default style typically given by the style in the current stylesheet.