JS randomly removes N unique data from the specified array_javascript skills

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Latest Issues

angular.js - What do the by and for of label group by group for (key,value) in object mean?

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Why is my cell array offside?

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Where are the codes for the conn.php and functions.php files?

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LastInsertId() returns a problem. I tested it and found that when deleting and modifying, lastInsertId() returned "0", so use if(null!== $this->xxx->lastInsertId()){} to judge. Can't distinguish between insertion, deletion and addition? Is there still something wrong with my test code? Can someone who knows please answer it? Thank you) [Using singleton mode]

From 1970-01-01 08:00:00

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创建数据表错误: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')ENGINE=InnoDB DEFAULT CHARSET=utf8' at line 7

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