lilishop-uniapp/uview-ui/libs/mixin/mixin.js

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module.exports = {
data() {
return {}
},
onLoad() {
// getRect挂载到$u上因为这方法需要使用in(this),所以无法把它独立成一个单独的文件导出
this.$u.getRect = this.$uGetRect
},
methods: {
// 查询节点信息
// 目前此方法在支付宝小程序中无法获取组件跟接点的尺寸为支付宝的bug(2020-07-21)
// 解决办法为在组件根部再套一个没有任何作用的view元素
$uGetRect(selector, all) {
return new Promise(resolve => {
uni.createSelectorQuery().
in(this)[all ? 'selectAll' : 'select'](selector)
.boundingClientRect(rect => {
if (all && Array.isArray(rect) && rect.length) {
resolve(rect)
}
if (!all && rect) {
resolve(rect)
}
})
.exec()
})
}
},
onReachBottom() {
uni.$emit('uOnReachBottom')
}
}