如何在javascript中连接两个锯齿状数组

Question

I have two arrays One is:

[ [ 2, 'c' ],
  [ 2, 'e' ],
  [ 3, 'a' ],
  [ 3, 'b' ] ]

and another is :

[ 3, [ 1, 'g' ], [ 2, [ 1, 'd' ], [ 1, 'f' ] ] ]

how can I concatenate both and get output like

[ [ 2, 'c' ],
  [ 2, 'e' ],
  [ 3, 'a' ],
  [ 3, 'b' ],
  [ 3, [ 1, 'g' ], [ 2, [ 1, 'd' ], [ 1, 'f' ] ] ]

Answer 1

var arr1 = [ [ 2, 'c' ],
             [ 2, 'e' ],
             [ 3, 'a' ],
             [ 3, 'b' ] ];  
var arr2 = [ 3, [ 1, 'g' ], [ 2, [ 1, 'd' ], [ 1, 'f' ] ] ];
arr1.push(arr2);

Answer 2

Have you tried using the spread operator? Please be aware that it's not supported in IE.

const x = 
    [ [ 2, 'c' ],
    [ 2, 'e' ],
    [ 3, 'a' ],
    [ 3, 'b' ] ];

const y = [ 3, [ 1, 'g' ], [ 2, [ 1, 'd' ], [ 1, 'f' ] ] ];

const z = [...x, y];

console.log(z);

Answer 3

You could wrap the additional array in extra brackets for use with Array#concat .

 var a = [[2, 'c'], [2, 'e'], [3, 'a'], [3, 'b']], b = [3, [1, 'g'], [2, [1, 'd'], [1, 'f']]]; console.log(a.concat([b]));

 .as-console-wrapper { max-height: 100% !important; top: 0; }

Answer 4

concat will merge two arrays into one array without changing the original arrays

Code

const x = 
    [ [ 2, 'c' ],
    [ 2, 'e' ],
    [ 3, 'a' ],
    [ 3, 'b' ] ]

const y = [ 3, [ 1, 'g' ], [ 2, [ 1, 'd' ], [ 1, 'f' ] ] ];

const z = x.concat([y])

Example

 const x = [ [2, 'c'], [2, 'e'], [3, 'a'], [3, 'b'] ] const y = [3, [1, 'g'], [2, [1, 'd'], [1, 'f'] ] ]; const z = x.concat([y]) console.log(z)