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创建一个<dd>元素，设置该元素的内容为4，并插入到id属性为“third”的<dd>元素之前。要求用DOM方法实现。 #331

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pwstrick opened this issue Jul 16, 2019 · 0 comments

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pwstrick commented Jul 16, 2019

创建一个<dd>元素，设置该元素的内容为4，并插入到id属性为“third”的<dd>元素之前。要求用DOM方法实现。

pwstrick added the JavaScript label

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