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Thursday, 12 June 2014

Get the Number of Rows and Columns of Single and Multidimensional JavaScript Arrays

by realfinetime  |  in JavaScript 2D Array at  21:34

To get the number of elements in a single dimensional array.

var single_dim_array_with_contents = [  'control' ,'alt'    ,'delete'  ];  

To get the number of elements in this array  :  single_dim_array_with_contents.length ;
This function will return 3 from this array.

To get the number of rows and columns in a two dimensional array.

var multi_dim_array_with_contents = [

 [  'mango'   , 'orange'  , 'banana'  ],
 [  'ford'    ,   'audi'   ,  'benz'    ],
 [  'control' ,  'alt'    ,  'delete'  ]

  ]; 

To get the number of rows  :  multi_dim_array_with_contents.length;
This function will return number 3 which is the number of rows.

To get the number of columns in each rows  :   multi_dim_array_with_contents[i].length ;
' i ' stands for the row number.

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