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Cannot read property 'style' of undefined at HTMLLIElement.lis.(anonymous function).onclick
時間 2021-07-12
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想做一個點擊隱藏li標籤的簡單案例,但是報錯Cannot read property 'style' of undefined at HTMLLIElement.lis.(anonymous function).onclick 一般這種錯誤都是因爲‘style’前面的元素找不到,可以打印一下,發現是undefined,只要將lis[i]替換爲this就可以了,this指當前元素lis[i
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