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e61d08ed29
* feat(scrollbar): add always show props and control scrollbar methods re #1751 #2004 * feat: update for review
138 lines
3.5 KiB
Markdown
138 lines
3.5 KiB
Markdown
## Scrollbar
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Used to replace the browser's native scrollbar.
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### Basic usage
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:::demo Use `height` property to set the height of the scrollbar, or if not set, it adapts according to the parent container height.
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```html
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<el-scrollbar height="400px">
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<p class="item" v-for="item in 20">{{ item }}</p>
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</el-scrollbar>
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```
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:::
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### Horizontal scroll
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:::demo When the element width is greater than the scrollbar width, the horizontal scrollbar is displayed.
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```html
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<el-scrollbar>
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<div class="flex-content">
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<p class="item" v-for="item in 50">{{ item }}</p>
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</div>
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</el-scrollbar>
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```
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:::
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### Max height
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:::demo The scrollbar is displayed only when the element height exceeds the max height.
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```html
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<template>
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<el-button @click="add">Add Item</el-button>
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<el-button @click="delete">Delete Item</el-button>
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<el-scrollbar max-height="400px">
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<p class="item" v-for="item in count">{{ item }}</p>
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</el-scrollbar>
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</template>
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<script>
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export default {
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data() {
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return {
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count: 3
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}
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},
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methods: {
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add() {
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this.count++
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},
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delete() {
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if (this.count > 0) {
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this.count--
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}
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}
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}
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}
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</script>
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```
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:::
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### Manual scroll
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:::demo Use `setScrollTop` and `setScrollLeft` methods can control scrollbar manually.
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```html
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<template>
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<el-scrollbar ref="scrollbar" height="400px" always>
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<div ref="inner">
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<p class="item" v-for="item in 20">{{ item }}</p>
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</div>
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</el-scrollbar>
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<el-slider v-model="value" @input="inputSlider" :max="max" :format-tooltip="formatTooltip"></el-slider>
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</template>
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<script>
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export default {
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data() {
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return {
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max: 0,
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value: 0
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}
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},
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mounted() {
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this.max = this.$refs.inner.clientHeight - 380
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},
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methods: {
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inputSlider(value) {
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this.$refs.scrollbar.setScrollTop(value)
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},
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formatTooltip(value) {
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return `${value} px`
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}
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}
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}
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</script>
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```
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:::
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### Scrollbar Attributes
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| Attribute | Description | Type | Accepted Values | Default |
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|------------- |---------------- |---------------- |---------------------- |-------- |
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| height | height of scrollbar | string / number | — | — |
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| max-height | max height of scrollbar | string / number | — | — |
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| native | whether to use the native scrollbar style | boolean | — | false |
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| wrap-style | style of warp container | string | — | — |
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| wrap-class |class of warp container | string | — | — |
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| view-style | style of view | string | — | — |
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| view-class | class of view | string | — | — |
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| noresize | do not respond to container size changes, if the container size does not change, it is better to set it to optimize performance | boolean | — | false |
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| tag | element tag of the view | string | — | div |
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| always | always show scrollbar | boolean | — | false |
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### Scrollbar Events
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| Event Name | Description | Parameters |
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|---------- |-------- |---------- |
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| scroll | triggers when scrolling | distance of scrolling { scrollLeft, scrollTop }|
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### Scrollbar Methods
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| Method | Description | Parameters |
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| ---- | ---- | ---- |
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| setScrollTop | Set distance to scroll top | (scrollTop: number)
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| setScrollLeft | Set distance to scroll left | (scrollLeft: number)
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