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fix: 🐛 taro-h5 处理IntersectionObserver初始调用不触发回调的问题 #16716

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fix: 🐛 taro-h5 处理IntersectionObserver初始调用不触发回调的问题 #16716

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9f7bcd7
fix: 🐛 taro-h5 处理IntersectionObserver初始化不触发回调的问题
BonjourBernard Oct 15, 2024
d2d2de5
Merge branch 'main' into hotfix-TARO_intersectionObserver_bug
BonjourBernard Oct 16, 2024
9c36a3e
Merge branch 'main' into hotfix-TARO_intersectionObserver_bug
BonjourBernard Dec 24, 2024
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8 changes: 6 additions & 2 deletions packages/taro-h5/src/api/wxml/IntersectionObserver.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -61,10 +61,14 @@ export class TaroH5IntersectionObserver implements Taro.IntersectionObserver {
// 使用时间戳而不是entry.time，跟微信小程序一致
time: Date.now(),
}

// web端会默认首次触发
if (!this._isInited && this._options.initialRatio <= Math.min.apply(Math, this._options.thresholds)) {
if (!this._isInited) {
// 初始的相交比例，如果调用时检测到的相交比例与这个值不相等且达到阈值，则会触发一次监听器的回调函数。
return
const [min, max] = [Math.min(this._options.initialRatio, entry.intersectionRatio), Math.max(this._options.initialRatio, entry.intersectionRatio)];
if(this._options.initialRatio === entry.intersectionRatio || !this._options.thresholds.some(value => value >= min && value <= max)) {
return
}
}
_callback && _callback.call(this, result)
})
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