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微信小程序 教程之wxapp视图容器 scroll-view

微信小程序 教程之wxapp 视图容器 view

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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