04 2021 档案
摘要:function isVisible(el) { const position = el.getBoundingClientRect() const windowHeight = document.documentElement.clientHeight // 顶部边缘可见 const topVis
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摘要:/*** @des 判断数组属性是否相同* @param {Array} a1* @param {Array} a2* @return {Boolean}*/function arrayEqual(a1,a2){ if(a1.length !== a2.length) return false fo
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