Object-type - Related information

• About referencing objects and arrays

  var arr = [1,2,3,4,5]; arr2 = arr; arr = arr2.concat([6,7,8,9,10]); [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] arr2; [1, 2, 3, 4, 5] as in the code above, the array is a reference type object, and arr2 holds a reference to arr. but why after operating on arr, the...

  Object-type javascript

  Mar.03,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3dc25-2c3c9.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3dc25-2c3c9.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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