tui-sticky-wxs.vue
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<template>
<view class="tui-sticky-class" :change:prop="parse.stickyChange" :prop="scrollTop" :data-top="top"
:data-height="height" :data-stickytop="stickyTop" :data-container="container"
:data-isNativeHeader="isNativeHeader" :data-index="index">
<!--sticky 容器-->
<view class="tui-sticky-seat" :style="{ height: stickyHeight, backgroundColor: backgroundColor }"></view>
<view class="tui-sticky-bar">
<slot name="header"></slot>
</view>
<!--sticky 容器-->
<!--内容-->
<slot name="content"></slot>
</view>
</template>
<script src="./tui-sticky.wxs" module="parse" lang="wxs"></script>
<script>
export default {
name: 'tuiStickyWxs',
emits: ['prop', 'change'],
props: {
scrollTop: {
type: [Number, String],
value: 0
},
//吸顶时与顶部的距离，单位px
stickyTop: {
type: [Number, String],
// #ifndef H5
default: 0,
// #endif
// #ifdef H5
default: 44
// #endif
},
//是否指定容器，即内容放置插槽content内
container: {
type: Boolean,
default: false
},
//是否是原生自带header
isNativeHeader: {
type: Boolean,
default: true
},
//吸顶容器 高度 rpx
stickyHeight: {
type: String,
default: 'auto'
},
//占位容器背景颜色
backgroundColor: {
type: String,
default: 'transparent'
},
//是否重新计算[有异步加载时使用,设置大于0的数]
recalc: {
type: Number,
default: 0
},
//列表中的索引值
index: {
type: [Number, String],
default: 0
}
},
watch: {
recalc(newValue, oldValue) {
this.updateScrollChange(() => {
//更新prop scrollTop值(+0.1即可),触发change事件
this.$emit("prop", {})
});
}
},
mounted() {
this.$nextTick(() => {
setTimeout(() => {
this.updateScrollChange();
}, 50);
})
},
data() {
return {
timer: null,
top: 0,
height: 0
};
},
methods: {
updateScrollChange(callback) {
if (this.timer) {
clearTimeout(this.timer);
this.timer = null;
}
this.timer = setTimeout(() => {
const className = '.tui-sticky-class';
const query = uni.createSelectorQuery().in(this);
query
.select(className)
.boundingClientRect(res => {
if (res) {
this.top = res.top + (this.scrollTop || 0);
this.height = res.height;
callback && callback();
this.$emit('change', {
index: Number(this.index),
top: this.top
});
}
})
.exec();
}, 0);
}
}
};
</script>
<style scoped>
.tui-sticky-fixed {
width: 100%;
position: fixed;
left: 0;
z-index: 998;
}
.tui-sticky-seat {
display: none;
}
</style>