Uncaught TypeError: Cannot read property 'length' of undefined
1.getJSON異步獲取數據出現jquery報錯 Uncaught TypeError: Cannot read property 'length' of undefined 問題：說明你each()遍歷的不是一個數組，檢查遍歷數據是否正確jquery
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- 1. jquery.dataTables.min.js:39 Uncaught TypeError: Cannot read property 'length' of undefined
- 2. Uncaught TypeError: Cannot read property length of undefined
- 3. Uncaught TypeError Cannot read property 'length' of undefin
- 4. jquery.min.js:2 Uncaught TypeError: Cannot read property 'length' of null
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