element-plus/docs/en-US/component/loading.md
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Co-authored-by: imswk <syfzxx@vip.qq.com>
2021-10-28 23:37:26 +08:00

6.0 KiB

title lang
Loading en-US

Loading

Show animation while loading data.

Loading inside a container

Displays animation in a container (such as a table) while loading data.

:::demo Element Plus provides two ways to invoke Loading: directive and service. For the custom directive v-loading, you just need to bind a boolean value to it. By default, the loading mask will append to the element where the directive is used. Adding the body modifier makes the mask append to the body element.

loading/basic

:::

Customization

You can customize loading text, loading spinner and background color.

:::demo Add attribute element-loading-text to the element on which v-loading is bound, and its value will be displayed under the spinner. Similarly, the element-loading-spinner, element-loading-background, and element-loading-svg attributes are used to set the icon component, background color value, and loading icon, respectively.

loading/customization

:::

:::warning

Although the element-loading-svg attribute supports incoming HTML fragments, it is very dangerous to dynamically render arbitrary HTML on the website, because it is easy to cause XSS attack. Please make sure that the content of element-loading-svg is trustworthy. Never assign user-submitted content to the element-loading-svg attribute.

:::

Full screen loading

Show a full screen animation while loading data.

:::demo When used as a directive, a full screen Loading requires the fullscreen modifier, and it will be appended to body. In this case, if you wish to disable scrolling on body, you can add another modifier lock. When used as a service, Loading will be full screen by default.

loading/fullscreen

:::

Service

You can also invoke Loading with a service. Import Loading service:

import { ElLoading } from 'element-plus'

Invoke it:

ElLoading.service(options)

The parameter options is the configuration of Loading, and its details can be found in the following table. LoadingService returns a Loading instance, and you can close it by invoking its close method:

const loadingInstance = ElLoading.service(options)
nextTick(() => {
  // Loading should be closed asynchronously
  loadingInstance.close()
})

Note that in this case the full screen Loading is singleton. If a new full screen Loading is invoked before an existing one is closed, the existing full screen Loading instance will be returned instead of actually creating another Loading instance:

const loadingInstance1 = ElLoading.service({ fullscreen: true })
const loadingInstance2 = ElLoading.service({ fullscreen: true })
console.log(loadingInstance1 === loadingInstance2) // true

Calling the close method on any one of them can close this full screen Loading.

If Element Plus is imported entirely, a globally method $loading will be registered to app.config.globalProperties. You can invoke it like this: this.$loading(options), and it also returns a Loading instance.

Options

Attribute Description Type Accepted Values Default
target the DOM node Loading needs to cover. Accepts a DOM object or a string. If it's a string, it will be passed to document.querySelector to get the corresponding DOM node object/string document.body
body same as the body modifier of v-loading boolean false
fullscreen same as the fullscreen modifier of v-loading boolean true
lock same as the lock modifier of v-loading boolean false
text loading text that displays under the spinner string
spinner class name of the custom spinner string
background background color of the mask string
custom-class custom class name for Loading string

Directives

Name Description Type
v-loading show animation while loading data boolean
element-loading-text loading text that displays under the spinner string
element-loading-spinner icon compontent of the custom spinner string / Component
element-loading-background background color of the mask string