ion-button
按钮提供可点击的元素，可用于表单或任何需要简单标准按钮功能的地方。它们可以显示文本、图标或两者兼有。按钮可以通过多个属性设置样式以达到特定的外观。
基本用法
扩展
此属性让您指定按钮的宽度。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 display: block 的全宽元素。
形状
此属性让您指定按钮的形状。默认情况下，按钮为带有小边框半径的矩形，但将其设置为 "round" 会将按钮更改为圆角元素。
填充
此属性决定按钮的背景和边框颜色。默认情况下，按钮具有实心背景，除非按钮位于工具栏内部，此时它具有透明背景。
尺寸
此属性指定按钮的大小。设置此属性将改变按钮的高度和内边距。
图标
主题定制
颜色
CSS 自定义属性
无障碍
按钮设计上考虑了无障碍性，但根据其内容可能需要进行一些调整。按钮组件渲染一个原生的 button 元素，这使其能够利用原生按钮提供的功能。
溢出文本内容
在许多情况下，按钮的文本内容可能会溢出容器。建议在这种情况下让按钮内的文本换行，以便所有文本仍然可读。按钮组件会自动调整其高度以适应额外的文本行。
当文本过长无法容纳时，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，这将把 white-space 属性设置为 "normal"。这将在未来的主要版本中成为默认行为。
信息
下方的按钮上设置 max-width 样式仅用于演示目的。文本换行动态按钮宽度下同样有效。
Properties
buttonType
| 说明 | The type of button. |
| 属性 | button-type |
| 类型 | string |
| 默认值 | 'button' |
color
| 说明 | 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. |
| 属性 | color |
| 类型 | "danger" ｜ "dark" ｜ "light" ｜ "medium" ｜ "primary" ｜ "secondary" ｜ "success" ｜ "tertiary" ｜ "warning" ｜ string ｜ undefined |
| 默认值 | undefined |
disabled
| 说明 | If true, the user cannot interact with the button. |
| 属性 | disabled |
| 类型 | boolean |
| 默认值 | false |
download
| 说明 | 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). |
| 属性 | download |
| 类型 | string ｜ undefined |
| 默认值 | undefined |
expand
| 说明 | 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. |
| 属性 | expand |
| 类型 | "block" ｜ "full" ｜ undefined |
| 默认值 | undefined |
fill
| 说明 | 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". |
| 属性 | fill |
| 类型 | "clear" ｜ "default" ｜ "outline" ｜ "solid" ｜ undefined |
| 默认值 | undefined |
form
| 说明 | The HTML form element or form element id. Used to submit a form when the button is not a child of the form. 这是一个虚拟属性，在初始化时设置一次，之后更改其值不会更新组件。 |
| 属性 | form |
| 类型 | HTMLFormElement ｜ string ｜ undefined |
| 默认值 | undefined |
href
| 说明 | Contains a URL or a URL fragment that the hyperlink points to. If this property is set, an anchor tag will be rendered. |
| 属性 | href |
| 类型 | string ｜ undefined |
| 默认值 | undefined |
mode
| 说明 | The mode determines which platform styles to use. 这是一个虚拟属性，在初始化时设置一次，之后更改其值不会更新组件。 |
| 属性 | mode |
| 类型 | "ios" ｜ "md" |
| 默认值 | undefined |
rel
| 说明 | Specifies the relationship of the target object to the link object. The value is a space-separated list of link types. |
| 属性 | rel |
| 类型 | string ｜ undefined |
| 默认值 | undefined |
routerAnimation
| 说明 | When using a router, it specifies the transition animation when navigating to another page using href. |
| 属性 | undefined |
| 类型 | ((baseEl: any, opts?: any) => Animation) ｜ undefined |
| 默认值 | undefined |
routerDirection
| 说明 | When using a router, it specifies the transition direction when navigating to another page using href. |
| 属性 | router-direction |
| 类型 | "back" ｜ "forward" ｜ "root" |
| 默认值 | 'forward' |
shape
| 说明 | Set to "round" for a button with more rounded corners. |
| 属性 | shape |
| 类型 | "round" ｜ undefined |
| 默认值 | undefined |
size
| 说明 | 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. |
| 属性 | size |
| 类型 | "default" ｜ "large" ｜ "small" ｜ undefined |
| 默认值 | undefined |
strong
| 说明 | If true, activates a button with a heavier font weight. |
| 属性 | strong |
| 类型 | boolean |
| 默认值 | false |
target
| 说明 | Specifies where to display the linked URL. Only applies when an href is provided. Special keywords: "_blank", "_self", "_parent", "_top". |
| 属性 | target |
| 类型 | string ｜ undefined |
| 默认值 | undefined |
type
| 说明 | The type of the button. |
| 属性 | type |
| 类型 | "button" ｜ "reset" ｜ "submit" |
| 默认值 | 'button' |
Events
| Name | 说明 | 冒泡 |
|---|---|---|
ionBlur | Emitted when the button loses focus. | true |
ionFocus | Emitted when the button has focus. | true |
Methods
该组件没有可用的公共方法。
CSS Shadow Parts
| Name | 说明 |
|---|---|
native | The native HTML button or anchor element that wraps all child elements. |
CSS Custom Properties
- iOS
- MD
| Name | 说明 |
|---|---|
--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 |
| Name | 说明 |
|---|---|
--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 |
Slots
| Name | 说明 |
|---|---|
| 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. |