ion-button
按钮提供了一个可点击元素，可用于表单中或任何需要简单标准按钮功能的场景。按钮可以显示文本、图标或两者兼具。可以通过多种属性为按钮设置特定样式。
基本用法
扩展
此属性用于指定按钮的宽度。默认情况下，按钮的显示模式为 display: inline-block，但设置此属性会将按钮改为具有 display: block 的全宽元素。
形状
此属性用于指定按钮的形状。默认情况下，按钮为带小圆角的矩形，但设置为 "round" 会将按钮改为圆形元素。
填充
此属性决定了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，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
无障碍访问
按钮在设计上已具备无障碍访问能力，但根据其内容可能需要进行一些调整。按钮组件渲染的是原生的 button 元素，这使得它能够利用原生按钮提供的功能。
文本内容溢出
在许多情况下，按钮的文本内容可能会超出容器。当发生这种情况时，建议将文本包裹在按钮内部，以便仍能阅读所有文本。按钮组件将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。为了使文本换行，可以添加 ion-text-wrap 类，该类将 white-space 属性设置为 "normal"。这将在未来的主要版本中成为默认设置。
信息
下方按钮上的 max-width 样式仅为演示目的而设置。文本换行适用于动态宽度的按钮。
属性
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. This is a virtual property that is set once during initialization and will not update if you change its value after the initial render. |
| 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. This is a virtual property that is set once during initialization and will not update if you change its value after the initial render. |
| 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
| Name | Description | Bubbles |
|---|---|---|
ionBlur | Emitted when the button loses focus. | true |
ionFocus | Emitted when the button has focus. | true |
方法
No public methods available for this component.
CSS Shadow 部件
| Name | Description |
|---|---|
native | The native HTML button or anchor element that wraps all child elements. |
CSS 自定义属性
| 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
| 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. |