# Table of Contents

* [`Introduction`](#introduction)
* [`Attributes`](#attributes)
  * [`min`](#min)
  * [`max`](#max)
  * [`minLength`](#minlength)
  * [`maxLength`](#maxlength)
  * [`remaining`](#remaining)
  * [`max_files`](#max_files)
  * [`max_size`](#max_size)
  * [`file_ext`](#file_ext)


# Introduction
JetFormbuilder offers its own API for managing field attributes. Each of the attributes uses the [reactivity mechanism](https://github.com/Crocoblock/jetformbuilder/wiki/Understanding-reactivity).

Now attributes can be used in formulas to Calculated Field, and in messages to constraints.
To do this, you need to write as follows: `%text_field(minLength)%`. Where `text_field` is the name of the field, and `minLength` is the name of the attribute.
And reactivity plays its role in the case if you change the value of this attribute through custom code.

# Attributes

## `min`
Returns the minimum number. Value from the option "Min value".

### Supported form fields
* **Number Field**
* **Range Field**

## `max`
Returns the maximum number. Value from the option "Max value".

### Supported form fields
* **Number Field**
* **Range Field**

## `minLength`
Returns the minimum number of characters. Value from the option "Min length (symbols)".

### Supported form fields
* **Text Field**
* **Textarea Field**

## `maxLength`
Returns the maximum number of characters. Value from the option "Max length (symbols)".

### Supported form fields
* **Text Field**
* **Textarea Field**

## `remaining`
Returns the difference between the maximum available number of characters and the entered characters.\
If `maxLength` attribute is **40** and the word `Hello` is entered in the field, the `remaining` attribute will return **35**.

This attribute depends on `minLength`, if it is not supported by the field or is empty, then `remaining` will not work.

### Supported form fields
* **Text Field**
* **Textarea Field**

## `max_files`
Returns the maximum number of files that can be uploaded. Value from the option "Maximum allowed files to upload".

### Supported form fields
* **Media Field**

## `max_size`
Returns the maximum size of one file in bytes. Value from the option "Maximum allowed files to upload".

### Supported form fields
* **Media Field**

## `file_ext`
Returns an array of supported file extensions. Value from the option "Allow mime types".

### Supported form fields
* **Media Field**

# Useful links
[:small_orange_diamond: View source of current page](https://raw.githubusercontent.com/wiki/Crocoblock/jetformbuilder/Frontend-Macros---Field-Attributes.md)