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 / String | 50 | 距顶部/左边多远时(单位px或rpx,默认为px),触发 scrolltoupper 事件 |
lower-threshold | Number / String | 50 | 距底部/右边多远时(单位px或rpx,默认为px),触发 scrolltolower 事件 |
scroll-top | Number / String | 设置竖向滚动条位置(单位px或rpx,默认为px) | |
scroll-left | Number / String | 设置横向滚动条位置(单位px或rpx,默认为px) | |
scroll-into-view | String | 值应为某子元素id(id不能以数字开头)。设置哪个方向可滚动,则在哪个方向滚动到该元素 | |
scroll-with-animation | Boolean | false | 在设置滚动条位置时使用动画过渡 |
enable-back-to-top | Boolean | false | iOS点击顶部状态栏、安卓双击标题栏时,滚动条返回顶部,只支持竖向 |
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 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 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
})
}
})