box.getBoundingClientRect is not a function

报错 "box.getBoundingClientRect is not a function" 表示box对象没有定义getBoundingClientRect方法。这个方法常用于获取DOM元素的位置和大小信息。根据你提供的引用内容来看，可能是因为box对象不是一个DOM元素，或者它的getBoundingClientRect方法没有被正确定义。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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