Name	Type	Default Value	Mandatory	Description
target	string	-	No	Attribute ID of the target component.
id	string	-	No	Unique ID of a component.
style	string	-	No	Style declaration of a component.
class	string	-	No	Style class of a component, which is used to refer to a style table.
ref	string	-	No	Used to register reference information of child elements or child components. The reference information is registered with the parent component on $refs.
disabled	boolean	false	No	Whether a component is disabled. If it is disabled, it cannot respond to user interaction.
data	string	-	No	Attribute set for a component to facilitate data storage and reading.

Name

Type

Default Value

Mandatory

Description

target

string

Attribute ID of the target component.

string

Unique ID of a component.

style

string

Style declaration of a component.

class

string

Style class of a component, which is used to refer to a style table.

ref

string

Used to register reference information of child elements or child components. The reference information is registered with the parent component on $refs.

disabled

boolean

false

Whether a component is disabled. If it is disabled, it cannot respond to user interaction.

data

string

Attribute set for a component to facilitate data storage and reading.

Name	Type	Default Value	Mandatory	Description
color	<color>	#e5000000	No	Text color.
font-size	<length>	30px	No	Font size (px).
allow-scale	boolean	true	No	Whether the font size changes following the system's font size settings. NOTE: For details about how to make the configuration take effect dynamically, see the config-changes attribute in the config.json file.
letter-spacing	<length>	0 px	No	Character spacing (px).
font-style	string	normal	No	Font style. Available values are as follows: normal: standard font style italic: italic font style
font-weight	number \| string	normal	No	Font width. For the number type, the value ranges from 100 to 900. The default value is 400. A larger value indicates a larger font width. NOTE: The value must be an integer multiple of 100. The value of the string type can be lighter, normal, hold, or bolder.
text-decoration	string	none	No	Text modifier. Available values are as follows: underline: An underline is used. line-through: A strikethrough is used. none: The standard text is used.
text-align	string	start	No	Text alignment mode. Available values are as follows: left: The text is left-aligned. center: The text is center-aligned. right: The text is right-aligned. start: The text is aligned with the direction in which the text is written. end: The text is aligned with the opposite direction in which the text is written. NOTE: If the text width is not specified, the alignment effect may not be obvious when the text width is the same as the width of the parent container.
line-height	<length>	0px	No	Text line height. When this parameter is set to 0px, the text line height is not limited and the font size is adaptive.
text-overflow	string	clip	No	Takes effect when the maximum number of lines is specified. Available values are as follows: clip: The text is clipped and displayed based on the size of the parent container. ellipsis: The text is displayed based on the size of the parent container. The text that cannot be displayed is replaced with ellipsis. This style must be used together with max-lines.
font-family	string	sans-serif	No	Font family, in which fonts are separated by commas (,). Each font is set using a font name or font family name. The first font that exists in the system or the font specified by Custom Font Styles in the family is selected as the font for the text.
max-lines	number	-	No	Maximum number of lines in the text.
min-font-size	<length>	-	No	Minimum font size in the text. This style must be used together with max-font-size. The font size can be changed dynamically. After the maximum and minimum font sizes are set, font-size does not take effect.
max-font-size	<length>	-	No	Maximum font size in the text. This style must be used together with min-font-size. The font size can be changed dynamically. After the maximum and minimum font sizes are set, font-size does not take effect.
font-size-step	<length>	1px	No	Step for dynamically adjusting the font size in the text. The minimum and maximum font sizes must be set.
prefer-font-sizes	<array>	-	No	Preset preferred font sizes. For dynamic font size adjustment, the preset sizes are used to match the maximum number of lines in the text. If the preferred font sizes were not set, the font size will be adjusted based on the maximum and minimum font sizes and the step you have set. If the maximum number of lines in the text cannot be met, text-overflow is used to truncate the text. If this parameter is set, font-size, max-font-size, min-font-size, and font-size-step do not take effect. Example values: 12px,14px,16px
width	<length> \| <percentage>	-	No	Component width. If this attribute is not set, the width required for the element content is used.
height	<length> \| <percentage>	-	No	Component height. If this length attribute is not set, the length required for the element content is used.
padding	<length> \| <percentage>⁵⁺	0	No	Shorthand attribute to set all padding attributes. The attribute can have one to four values: If you set only one value, it specifies the padding for four sides. If you set two values, the first value specifies the top and bottom padding, and the second value specifies the left and right padding. If you set three values, the first value specifies the top padding, the second value specifies the left and right padding, and the third value specifies the bottom padding. If you set four values, they respectively specify the padding for top, right, bottom, and left sides (in clockwise order).
padding-[left\|top\|right\|bottom]	<length> \| <percentage>⁵⁺	0	No	Left, top, right, and bottom padding (in px).
padding-[start\|end]	<length> \| <percentage>⁵⁺	0	No	Start and end padding.
margin	<length> \| <percentage>⁵⁺	0	No	Shorthand attribute to set margins for all sides in a declaration. The attribute can have one to four values: If you set only one value, it specifies the margin for all the four sides. If you set two values, the first value is for the top and bottom sides and the second value for the left and right sides. If you set three values, the first value is for the top, the second value for the left and right, and the third value for the bottom. If you set four values, they are margins for top, right, bottom, and left sides, respectively.
margin-[left\|top\|right\|bottom]	<length> \| <percentage>⁵⁺	0	No	Left, top, right, and bottom margins.
margin-[start\|end]	<length> \| <percentage>⁵⁺	0	No	Start and end margins.
border	-	0	No	Shorthand attribute to set all borders. You can set border-width, border-style, and border-color in sequence. Default values are used for attributes that are not set.
border-style	string	solid	No	Shorthand attribute to set the style for all borders. Available values are as follows: dotted: Dotted border. The radius of a dot is half of border-width. dashed: Dashed border solid: Solid border
border-[left\|top\|right\|bottom]-style	string	solid	No	Styles of the left, top, right, and bottom borders. The available values are dotted, dashed, and solid.
border-[left\|top\|right\|bottom]	-	-	No	Shorthand attribute to set the borders for every side respectively. You can set border-width, border-style, and border-color in sequence. Default values are used for attributes that are not set.
border-width	<length>	0	No	Shorthand attribute to set the width of all borders , or separately set the width of each border.
border-[left\|top\|right\|bottom]-width	<length>	0	No	Attribute to set widths of left, top, right, and bottom borders.
border-color	<color>	black	No	Shorthand attribute to set the color of all borders , or separately set the color of each border.
border-[left\|top\|right\|bottom]-color	<color>	black	No	Attribute to set colors of left, top, right, and bottom borders.
border-radius	<length>	-	No	Attribute to set the radius of round borders of an element. This attribute cannot be used to set the width, color, or style of a specific border. To set the width or color, you need to set border-width, border-color, or border-style for all the borders at the same time.
border-[top\|bottom]-[left\|right]-radius	<length>	-	No	Attribute to receptively set the radii of upper-left, upper-right, lower-right, and lower-left rounded corners
background	<linear-gradient>	-	No	This attribute supports Gradient Styles only but is not compatible with background-color or background-image.
background-color	<color>	-	No	Background color.
background-image	string	-	No	Background image. Currently, this attribute is not compatible with background-color or background. Local image resources are supported. Example: background-image: url("/common/background.png")
background-size	string <length> <length> <percentage> <percentage>	auto	No	Background image size. The string values are as follows: contain: Expands the image to the maximum size so that the height and width of the image are applicable to the content area. cover: Extends the background image to a large enough size so that the background image completely covers the background area. Some parts of the image may not be displayed in the background area. auto: The original image width-height ratio is retained. The two <length> values are as follows: Width and height of the background image. The first value indicates the width, and the second value indicates the height. If you only set one value, the other value is set to auto by default. The two <percentage> values are as follows: Width and height of the background image in percentage of the parent element. The first value indicates the width, and the second value indicates the height. If you only set one value, the other value is set to auto by default.
background-repeat	string	repeat	No	How a background image is repeatedly drawn. By default, a background image is repeated both horizontally and vertically. repeat: Repeatedly draws images along the x-axis and y-axis at the same time. repeat-x: Repeatedly draws images along the x-axis. repeat-y: Repeatedly draws images along the y-axis. no-repeat: The image is not drawn repeatedly.
background-position	string string <length> <length> <percentage> <percentage>	0px 0px	No	Using keywords: If only one keyword is specified, the other value is center by default. The two values define the horizontal position and vertical position, respectively. left: leftmost in the horizontal direction right: rightmost in the horizontal direction top: top in the vertical direction bottom: bottom in the vertical direction center: center position Using <length>: The first value indicates the horizontal position, and the second value indicates the vertical position. 0 0 indicates the upper left corner. The unit is pixel. If only one value is specified, the other one is 50%. Using <percentage>: The first value indicates the horizontal position, and the second value indicates the vertical position. 0% 0% indicates the upper left corner. 100% 100% indicates the lower right corner. If only one value is specified, the other one is 50%. Using both <percentage> and <length>.
opacity	number	1	No	Transparency of an element. The value ranges from 0 to 1. The value 1 means opaque, and 0 means completely transparent.
display	string	flex	No	How and whether to display the box containing an element. Available values are as follows: flex: flexible layout none: The element is hidden.
visibility	string	visible	No	Whether to display an element. Invisible borders occupy layout space. (To remove the borders, set the display attribute to none.) Available values are as follows: visible: The element is visible. hidden: The element is hidden but still takes up space. NOTE: If both visibility and display are set, only display takes effect.
flex	-	-	No	How to divide available space of the parent component for a child component. You can set one, two⁵⁺, or three⁵⁺ values for this style. Set one value in either of the following ways: A unitless number to set flex-grow. A valid width value⁵⁺ to set flex-basis. Set two values⁵⁺ in the following ways: The first value must be a unitless number used to set flex-grow. The second value must be either of the following: A unitless number to set flex-shrink. A valid width value to set flex-basis. Set three values⁵⁺ in the following ways: The first value must be a unitless number used to set flex-grow. The second value must be a unitless number used to set flex-shrink. The third value must be a valid width value used to set flex-basis. NOTE: This style takes effect only when the container is any of the following components: <div>, <list-item>, <refresh>, <stepper-item>⁵⁺, and <tabs>.
flex-grow	number	0	No	How much a child component will grow. The value specifies allocation of the remaining space on the main axis of the parent component. Size of available space = Container size - Total size of all child components. Value 0 indicates that the child component does not grow. NOTE: This style takes effect only when the container is any of the following components: <div>, <list-item>, <refresh>, <stepper-item>⁵⁺, and <tabs>.
flex-shrink	number	1	No	How much a child component will shrink. The shrink occurs only when the sum of default child component widths is greater than that of the parent component. Value 0 indicates that the child component does not shrink. NOTE: This style takes effect only when the container is any of the following components: <div>, <list-item>, <refresh>, <stepper-item>⁵⁺, and <tabs>.
flex-basis	<length>	-	No	Initial length of the flex item on the main axis. NOTE: This style takes effect only when the container is any of the following components: <div>, <list-item>, <refresh>, <stepper-item>⁵⁺, and <tabs>.
position	string	relative	No	Positioning type of an element. Dynamic changes are not supported. fixed: The element is positioned related to the browser window. absolute: The element is positioned absolutely to its parent element. relative: The element is positioned relative to its normal position. NOTE: The absolute attribute takes effect only when the parent component is <div> or <stack>.
[left\|top \|right\|bottom]	<length>	-	No	left\|top\|right\|bottom must be used together with position to determine the offset position of an element. The left attribute specifies the left edge position of the element. This attribute defines the offset between the left edge of a positioned element and that of a block included in the element. The top attribute specifies the top edge position of the element. This attribute defines the offset between the top edge of a positioned element and that of a block included in the element. The right attribute specifies the right edge position of the element. This attribute defines the offset between the right edge of a positioned element and that of a block included in the element. The bottom attribute specifies the bottom edge position of the element. This attribute defines the offset between the bottom edge of a positioned element and that of a block included in the element.

Name

Type

Default Value

Mandatory

Description

color

<color>

#e5000000

Text color.

font-size

30px

Font size (px).

allow-scale

boolean

true

Whether the font size changes following the system's font size settings.

NOTE:

For details about how to make the configuration take effect dynamically, see the config-changes attribute in the config.json file.

letter-spacing

0 px

Character spacing (px).

font-style

string

normal

Font style. Available values are as follows:

normal: standard font style
italic: italic font style

font-weight

number | string

normal

Font width. For the number type, the value ranges from 100 to 900. The default value is 400. A larger value indicates a larger font width.

NOTE:

The value must be an integer multiple of 100.

The value of the string type can be lighter, normal, hold, or bolder.

text-decoration

string

none

Text modifier. Available values are as follows:

underline: An underline is used.
line-through: A strikethrough is used.
none: The standard text is used.

text-align

string

start

Text alignment mode. Available values are as follows:

left: The text is left-aligned.
center: The text is center-aligned.
right: The text is right-aligned.
start: The text is aligned with the direction in which the text is written.
end: The text is aligned with the opposite direction in which the text is written.

NOTE:

If the text width is not specified, the alignment effect may not be obvious when the text width is the same as the width of the parent container.

line-height

0px

Text line height. When this parameter is set to 0px, the text line height is not limited and the font size is adaptive.

text-overflow

string

clip

Takes effect when the maximum number of lines is specified. Available values are as follows:

clip: The text is clipped and displayed based on the size of the parent container.
ellipsis: The text is displayed based on the size of the parent container. The text that cannot be displayed is replaced with ellipsis. This style must be used together with max-lines.

font-family

string

sans-serif

Font family, in which fonts are separated by commas (,). Each font is set using a font name or font family name. The first font that exists in the system or the font specified by Custom Font Styles in the family is selected as the font for the text.

max-lines

number

Maximum number of lines in the text.

min-font-size

Minimum font size in the text. This style must be used together with max-font-size. The font size can be changed dynamically. After the maximum and minimum font sizes are set, font-size does not take effect.

max-font-size

Maximum font size in the text. This style must be used together with min-font-size. The font size can be changed dynamically. After the maximum and minimum font sizes are set, font-size does not take effect.

font-size-step

1px

Step for dynamically adjusting the font size in the text. The minimum and maximum font sizes must be set.

prefer-font-sizes

<array>

Preset preferred font sizes. For dynamic font size adjustment, the preset sizes are used to match the maximum number of lines in the text. If the preferred font sizes were not set, the font size will be adjusted based on the maximum and minimum font sizes and the step you have set. If the maximum number of lines in the text cannot be met, text-overflow is used to truncate the text. If this parameter is set, font-size, max-font-size, min-font-size, and font-size-step do not take effect.

Example values: 12px,14px,16px

width

Component width.

If this attribute is not set, the width required for the element content is used.

height

Component height.

If this length attribute is not set, the length required for the element content is used.

padding

<length> | <percentage>⁵⁺

Shorthand attribute to set all padding attributes.

The attribute can have one to four values:

If you set only one value, it specifies the padding for four sides.
If you set two values, the first value specifies the top and bottom padding, and the second value specifies the left and right padding.
If you set three values, the first value specifies the top padding, the second value specifies the left and right padding, and the third value specifies the bottom padding.
If you set four values, they respectively specify the padding for top, right, bottom, and left sides (in clockwise order).

padding-[left|top|right|bottom]

<length> | <percentage>⁵⁺

Left, top, right, and bottom padding (in px).

padding-[start|end]

<length> | <percentage>⁵⁺

Start and end padding.

margin

<length> | <percentage>⁵⁺

Shorthand attribute to set margins for all sides in a declaration. The attribute can have one to four values:

If you set only one value, it specifies the margin for all the four sides.
If you set two values, the first value is for the top and bottom sides and the second value for the left and right sides.
If you set three values, the first value is for the top, the second value for the left and right, and the third value for the bottom.
If you set four values, they are margins for top, right, bottom, and left sides, respectively.

margin-[left|top|right|bottom]

<length> | <percentage>⁵⁺

Left, top, right, and bottom margins.

margin-[start|end]

<length> | <percentage>⁵⁺

Start and end margins.

border

Shorthand attribute to set all borders. You can set border-width, border-style, and border-color in sequence. Default values are used for attributes that are not set.

border-style

string

solid

Shorthand attribute to set the style for all borders. Available values are as follows:

dotted: Dotted border. The radius of a dot is half of border-width.
dashed: Dashed border

solid: Solid border

border-[left|top|right|bottom]-style

string

solid

Styles of the left, top, right, and bottom borders. The available values are dotted, dashed, and solid.

border-[left|top|right|bottom]

Shorthand attribute to set the borders for every side respectively. You can set border-width, border-style, and border-color in sequence. Default values are used for attributes that are not set.

border-width

Shorthand attribute to set the width of all borders , or separately set the width of each border.

border-[left|top|right|bottom]-width

Attribute to set widths of left, top, right, and bottom borders.

border-color

<color>

black

Shorthand attribute to set the color of all borders , or separately set the color of each border.

border-[left|top|right|bottom]-color

<color>

black

Attribute to set colors of left, top, right, and bottom borders.

border-radius

Attribute to set the radius of round borders of an element. This attribute cannot be used to set the width, color, or style of a specific border. To set the width or color, you need to set border-width, border-color, or border-style for all the borders at the same time.

border-[top|bottom]-[left|right]-radius

Attribute to receptively set the radii of upper-left, upper-right, lower-right, and lower-left rounded corners

background

<linear-gradient>

This attribute supports Gradient Styles only but is not compatible with background-color or background-image.

background-color

<color>

Background color.

background-image

string

Background image. Currently, this attribute is not compatible with background-color or background. Local image resources are supported.

Example:

background-image: url("/common/background.png")

background-size

string
<length> <length>
<percentage> <percentage>

auto

Background image size.

The string values are as follows:
- contain: Expands the image to the maximum size so that the height and width of the image are applicable to the content area.
- cover: Extends the background image to a large enough size so that the background image completely covers the background area. Some parts of the image may not be displayed in the background area.
- auto: The original image width-height ratio is retained.
The two <length> values are as follows:
Width and height of the background image. The first value indicates the width, and the second value indicates the height. If you only set one value, the other value is set to auto by default.
The two <percentage> values are as follows:
Width and height of the background image in percentage of the parent element. The first value indicates the width, and the second value indicates the height. If you only set one value, the other value is set to auto by default.

background-repeat

string

repeat

How a background image is repeatedly drawn. By default, a background image is repeated both horizontally and vertically.

repeat: Repeatedly draws images along the x-axis and y-axis at the same time.
repeat-x: Repeatedly draws images along the x-axis.
repeat-y: Repeatedly draws images along the y-axis.
no-repeat: The image is not drawn repeatedly.

background-position

string string
<length> <length>
<percentage> <percentage>

0px 0px

Using keywords: If only one keyword is specified, the other value is center by default. The two values define the horizontal position and vertical position, respectively.
- left: leftmost in the horizontal direction
- right: rightmost in the horizontal direction
- top: top in the vertical direction
- bottom: bottom in the vertical direction
- center: center position

Using <length>: The first value indicates the horizontal position, and the second value indicates the vertical position. 0 0 indicates the upper left corner. The unit is pixel. If only one value is specified, the other one is 50%.
Using <percentage>: The first value indicates the horizontal position, and the second value indicates the vertical position. 0% 0% indicates the upper left corner. 100% 100% indicates the lower right corner. If only one value is specified, the other one is 50%.
Using both <percentage> and <length>.

opacity

number

Transparency of an element. The value ranges from 0 to 1. The value 1 means opaque, and 0 means completely transparent.

display

string

flex

How and whether to display the box containing an element. Available values are as follows:

flex: flexible layout
none: The element is hidden.

visibility

string

visible

Whether to display an element. Invisible borders occupy layout space. (To remove the borders, set the display attribute to none.) Available values are as follows:

visible: The element is visible.
hidden: The element is hidden but still takes up space.

NOTE:

If both visibility and display are set, only display takes effect.

flex

How to divide available space of the parent component for a child component.

You can set one, two⁵⁺, or three⁵⁺ values for this style.

Set one value in either of the following ways:

A unitless number to set flex-grow.
A valid width value⁵⁺ to set flex-basis.

Set two values⁵⁺ in the following ways:

The first value must be a unitless number used to set flex-grow. The second value must be either of the following:

A unitless number to set flex-shrink.
A valid width value to set flex-basis.

Set three values⁵⁺ in the following ways:

The first value must be a unitless number used to set flex-grow. The second value must be a unitless number used to set flex-shrink. The third value must be a valid width value used to set flex-basis.

NOTE:

This style takes effect only when the container is any of the following components: <div>, <list-item>, <refresh>, <stepper-item>⁵⁺, and <tabs>.

flex-grow

number

How much a child component will grow. The value specifies allocation of the remaining space on the main axis of the parent component. Size of available space = Container size - Total size of all child components. Value 0 indicates that the child component does not grow.

NOTE:

This style takes effect only when the container is any of the following components: <div>, <list-item>, <refresh>, <stepper-item>⁵⁺, and <tabs>.

flex-shrink

number

How much a child component will shrink. The shrink occurs only when the sum of default child component widths is greater than that of the parent component. Value 0 indicates that the child component does not shrink.

NOTE:

This style takes effect only when the container is any of the following components: <div>, <list-item>, <refresh>, <stepper-item>⁵⁺, and <tabs>.

flex-basis

Initial length of the flex item on the main axis.

NOTE:

This style takes effect only when the container is any of the following components: <div>, <list-item>, <refresh>, <stepper-item>⁵⁺, and <tabs>.

position

string

relative

Positioning type of an element. Dynamic changes are not supported.

fixed: The element is positioned related to the browser window.
absolute: The element is positioned absolutely to its parent element.
relative: The element is positioned relative to its normal position.

NOTE:

The absolute attribute takes effect only when the parent component is <div> or <stack>.

[left|top |right|bottom]

left|top|right|bottom must be used together with position to determine the offset position of an element.

The left attribute specifies the left edge position of the element. This attribute defines the offset between the left edge of a positioned element and that of a block included in the element.
The top attribute specifies the top edge position of the element. This attribute defines the offset between the top edge of a positioned element and that of a block included in the element.
The right attribute specifies the right edge position of the element. This attribute defines the offset between the right edge of a positioned element and that of a block included in the element.
The bottom attribute specifies the bottom edge position of the element. This attribute defines the offset between the bottom edge of a positioned element and that of a block included in the element.