Number Input Web Control Number Input Web Control

Number Input Web Control

Leo Ng Leo Ng


Number Input Web Control can be used to insert boxes that allow a user of an app to input numbers.


Control Properties

Placeholder Text

The text displayed to the app user when no text has been inputted.  This field expects to return text, by default text not encapsulated by string quotes will have this wrapping implied.



Advanced Control Properties

Numeral Non Negative

If checked, only allows non negative numbers to be inputted. If unchecked, allows both negative and non negative numbers. 


Enabling this will divide the raw value of the Number Input by 100.

Numeral Thousands Group Style

Adjusts the style of how numbers are formatted with commas on the input.  The default value is 'thousand' where the value of 1000 will be displayed as 1,000.  This setting has no effect on the raw value stored.

Numeral Decimal Scale

Adjusts the level of precision of numbers that can be inputted by the number of digits. If the value of 3 is entered, the number of digits that can be entered after the decimal point will be 3. For example, the value of 5.333 could be entered, but not 5.3333.

Numeral Integer Scale

Adjusts the scale of numbers that can be inputted by the number of digits. For example, if the value of 4 is set here, the largest number possible will be 9999.


Sets the style of the number delimiter.  For example, in many countries, the desired value will be "," which would format 10000 to 10,000.


Sets a value that is displayed as a placeholder and is affixed to the beginning of the value.

No Immediate Prefix

Negates the Prefix setting if set.

Raw Value Trim Prefix

Trims the value set within Prefix (if set) at the beginning of the value.  Affects only the raw value stored which is not displayed to the app user.


Number inputs can be styled with these controls. For more information, see Common Style Properties of Web Controls.


Controlling what happens with the inputted data


Data entered into a number input need to be bound to a variable. By default, Airkit automatically creates a Number Variable for the inputted data to be stored which can be seen within Inspector > Data Binding.

In this example, a variable named number_input_1 has been created. 

Limiting the values inputted

By default, the largest value that can be inputted is 99,999,999,999.

In the case of entering a person's age, this seems excessive.  To ensure the desired data is inputted, limit the Numeral Decimal Scale to 0 so that only whole numbers can be entered and set the Numeral Integer Scale to 3.  It could also be a good idea to set the Numeral Non Negative property to TRUE (check the box) to ensure only positive numbers.


Further reading