ion-button
按钮提供了可点击的元素，可以在表单中或任何需要简单、标准按钮功能的地方使用。它们可能显示文本、图标或两者兼而有之。可以使用多个属性对按钮进行样式设置，以使其具有特定的外观。
¥Buttons provide a clickable element, which can be used in forms, or anywhere that needs simple, standard button functionality. They may display text, icons, or both. Buttons can be styled with several attributes to look a specific way.
基本用法
¥Basic Usage
展开
¥Expand
此属性允许你指定按钮的宽度。默认情况下，按钮具有 display: inline-block，但设置此属性会将按钮更改为具有 display: block 的全角元素。
¥This property lets you specify how wide the button should be. By default, buttons have display: inline-block, but setting this property will change the button to a full-width element with display: block.
形状
¥Shape
此属性允许你指定按钮的形状。默认情况下，按钮是矩形，边框半径较小，但将其设置为 "round" 会将按钮更改为圆形元素。
¥This property lets you specify the shape of the button. By default, buttons are rectangular with a small border radius, but setting this to "round" will change the button to a rounded element.
填充
¥Fill
该属性决定按钮的背景和边框颜色。默认情况下，按钮具有纯色背景，除非按钮位于工具栏内部，在这种情况下，按钮具有透明背景。
¥This property determines the background and border color of the button. By default, buttons have a solid background unless the button is inside of a toolbar, in which case it has a transparent background.
尺寸
¥Size
该属性指定按钮的大小。设置此属性将更改按钮的高度和填充。
¥This property specifies the size of the button. Setting this property will change the height and padding of a button.
图标
¥Icons
主题化
¥Theming
颜色
¥Colors
CSS 自定义属性
¥CSS Custom Properties
无障碍
¥Accessibility
按钮被设计为易于访问，但可能需要根据其内容进行一些调整。按钮组件渲染原生 按钮元素，使其能够利用原生按钮提供的功能。
¥Buttons are built to be accessible, but may need some adjustments depending on their content. The button component renders a native button element which allows it to take advantage of the functionality that a native button provides.
文本内容溢出
¥Overflowing Text Content
在很多情况下，按钮的文本内容可能会溢出容器。建议在发生这种情况时将文本封装在按钮内，以便仍然可以阅读所有文本。按钮组件将自动调整其高度以容纳额外的文本行。
¥There are many cases where a button's text content may overflow the container. It is recommended to wrap the text inside of the button when this happens so that all of the text can still be read. The button component will automatically adjust its height to accommodate the extra lines of text.
当文本太长而无法容纳时，按钮文本不会自动换行到下一行。为了使文本换行，可以添加 ion-text-wrap 类，这会将 white-space 属性设置为 "normal"。这将成为未来主要版本中的默认设置。
¥The button text does not automatically wrap to the next line when the text is too long to fit. In order to make the text wrap, the ion-text-wrap class can be added, which will set the white-space property to "normal". This will become the default in a future major release.
在下面的按钮上设置 max-width 样式仅用于演示目的。文本换行将与动态按钮宽度一起使用。
¥The max-width style is set on the button below for demo purposes only. Text wrapping will work with a dynamic button width.
属性
¥Properties
buttonType
| Description | The type of button. |
| Attribute | button-type |
| Type | string |
| Default | 'button' |
color
| Description | The color to use from your application's color palette. Default options are: "primary", "secondary", "tertiary", "success", "warning", "danger", "light", "medium", and "dark". For more information on colors, see theming. |
| Attribute | color |
| Type | "danger" ｜ "dark" ｜ "light" ｜ "medium" ｜ "primary" ｜ "secondary" ｜ "success" ｜ "tertiary" ｜ "warning" ｜ string ｜ undefined |
| Default | undefined |
disabled
| Description | If true, the user cannot interact with the button. |
| Attribute | disabled |
| Type | boolean |
| Default | false |
download
| Description | This attribute instructs browsers to download a URL instead of navigating to it, so the user will be prompted to save it as a local file. If the attribute has a value, it is used as the pre-filled file name in the Save prompt (the user can still change the file name if they want). |
| Attribute | download |
| Type | string ｜ undefined |
| Default | undefined |
expand
| Description | Set to "block" for a full-width button or to "full" for a full-width button with square corners and no left or right borders. |
| Attribute | expand |
| Type | "block" ｜ "full" ｜ undefined |
| Default | undefined |
fill
| Description | Set to "clear" for a transparent button that resembles a flat button, to "outline" for a transparent button with a border, or to "solid" for a button with a filled background. The default fill is "solid" except inside of a toolbar, where the default is "clear". |
| Attribute | fill |
| Type | "clear" ｜ "default" ｜ "outline" ｜ "solid" ｜ undefined |
| Default | undefined |
form
| Description | The HTML form element or form element id. Used to submit a form when the button is not a child of the form. |
| Attribute | form |
| Type | HTMLFormElement ｜ string ｜ undefined |
| Default | undefined |
href
| Description | Contains a URL or a URL fragment that the hyperlink points to. If this property is set, an anchor tag will be rendered. |
| Attribute | href |
| Type | string ｜ undefined |
| Default | undefined |
mode
| Description | The mode determines which platform styles to use. |
| Attribute | mode |
| Type | "ios" ｜ "md" |
| Default | undefined |
rel
| Description | Specifies the relationship of the target object to the link object. The value is a space-separated list of link types. |
| Attribute | rel |
| Type | string ｜ undefined |
| Default | undefined |
routerAnimation
| Description | When using a router, it specifies the transition animation when navigating to another page using href. |
| Attribute | undefined |
| Type | ((baseEl: any, opts?: any) => Animation) ｜ undefined |
| Default | undefined |
routerDirection
| Description | When using a router, it specifies the transition direction when navigating to another page using href. |
| Attribute | router-direction |
| Type | "back" ｜ "forward" ｜ "root" |
| Default | 'forward' |
shape
| Description | Set to "round" for a button with more rounded corners. |
| Attribute | shape |
| Type | "round" ｜ undefined |
| Default | undefined |
size
| Description | Set to "small" for a button with less height and padding, to "default" for a button with the default height and padding, or to "large" for a button with more height and padding. By default the size is unset, unless the button is inside of an item, where the size is "small" by default. Set the size to "default" inside of an item to make it a standard size button. |
| Attribute | size |
| Type | "default" ｜ "large" ｜ "small" ｜ undefined |
| Default | undefined |
strong
| Description | If true, activates a button with a heavier font weight. |
| Attribute | strong |
| Type | boolean |
| Default | false |
target
| Description | Specifies where to display the linked URL. Only applies when an href is provided. Special keywords: "_blank", "_self", "_parent", "_top". |
| Attribute | target |
| Type | string ｜ undefined |
| Default | undefined |
type
| Description | The type of the button. |
| Attribute | type |
| Type | "button" ｜ "reset" ｜ "submit" |
| Default | 'button' |
事件
¥Events
| Name | Description | Bubbles |
|---|---|---|
ionBlur | Emitted when the button loses focus. | true |
ionFocus | Emitted when the button has focus. | true |
方法
¥Methods
No public methods available for this component.
CSS 阴影部分
¥CSS Shadow Parts
| Name | Description |
|---|---|
native | The native HTML button or anchor element that wraps all child elements. |
CSS 自定义属性
¥CSS Custom Properties
| Name | Description |
|---|---|
--background | Background of the button |
--background-activated | Background of the button when pressed. Note: setting this will interfere with the Material Design ripple. |
--background-activated-opacity | Opacity of the button when pressed |
--background-focused | Background of the button when focused with the tab key |
--background-focused-opacity | Opacity of the button when focused with the tab key |
--background-hover | Background of the button on hover |
--background-hover-opacity | Opacity of the background on hover |
--border-color | Border color of the button |
--border-radius | Border radius of the button |
--border-style | Border style of the button |
--border-width | Border width of the button |
--box-shadow | Box shadow of the button |
--color | Text color of the button |
--color-activated | Text color of the button when pressed |
--color-focused | Text color of the button when focused with the tab key |
--color-hover | Text color of the button when hover |
--opacity | Opacity of the button |
--padding-bottom | Bottom padding of the button |
--padding-end | Right padding if direction is left-to-right, and left padding if direction is right-to-left of the button |
--padding-start | Left padding if direction is left-to-right, and right padding if direction is right-to-left of the button |
--padding-top | Top padding of the button |
--ripple-color | Color of the button ripple effect |
--transition | Transition of the button |
插槽
¥Slots
| Name | Description |
|---|---|
| `` | Content is placed between the named slots if provided without a slot. |
end | Content is placed to the right of the button text in LTR, and to the left in RTL. |
icon-only | Should be used on an icon in a button that has no text. |
start | Content is placed to the left of the button text in LTR, and to the right in RTL. |