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scroll-view
可滚动视图区域。
属性名
类型
默认值
说明
scroll-x
Boolean
false
允许横向滚动
scroll-y
Boolean
false
允许纵向滚动
upper-threshold
Number
50
距顶部/左边多远时(单位px),触发 scrolltoupper 事件
lower-threshold
Number
50
距底部/右边多远时(单位px),触发 scrolltolower 事件
scroll-top
Number
设置竖向滚动条位置
scroll-left
Number
设置横向滚动条位置
scroll-into-view
String
值应为某子元素id,则滚动到该元素,元素顶部对齐滚动区域顶部
bindscrolltoupper
EventHandle
滚动到顶部/左边,会触发 scrolltoupper 事件
bindscrolltolower
EventHandle
滚动到底部/右边,会触发 scrolltolower 事件
bindscroll
EventHandle
滚动时触发,event.detail = {scrollLeft, scrollTop, scrollHeight, scrollWidth, deltaX, deltaY}
使用竖向滚动时,需要给<scroll-view/>一个固定高度,通过 WXSS 设置 height。
示例代码:
<view class="section"> <view class="section__title">vertical scroll</view> <scroll-view scroll-y="true" style="height: 200px;" bindscrolltoupper="upper" bindscrolltolower="lower" bindscroll="scroll" scroll-into-view="{{toView}}" scroll-top="{{scrollTop}}"> <view id="green" class="scroll-view-item bc_green"></view> <view id="red" class="scroll-view-item bc_red"></view> <view id="yellow" class="scroll-view-item bc_yellow"></view> <view id="blue" class="scroll-view-item bc_blue"></view> </scroll-view> <view class="btn-area"> <button size="mini" bindtap="tap">click me to scroll into view </button> <button size="mini" bindtap="tapMove">click me to scroll</button> </view> </view> <view class="section section_gap"> <view class="section__title">horizontal scroll</view> <scroll-view class="scroll-view_H" scroll-x="true" style="width: 100%"> <view id="green" class="scroll-view-item_H bc_green"></view> <view id="red" class="scroll-view-item_H bc_red"></view> <view id="yellow" class="scroll-view-item_H bc_yellow"></view> <view id="blue" class="scroll-view-item_H bc_blue"></view> </scroll-view> </view>
var order = ['red', 'yellow', 'blue', 'green', 'red'] Page({ data: { toView: 'red', scrollTop: 100 }, upper: function(e) { console.log(e) }, lower: function(e) { console.log(e) }, scroll: function(e) { console.log(e) }, tap: function(e) { for (var i = 0; i < order.length; ++i) { if (order[i] === this.data.toView) { this.setData({ toView: order[i + 1] }) break } } }, tapMove: function(e) { this.setData({ scrollTop: this.data.scrollTop + 10 }) } }) scroll-view
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