"my_array.push (... data)" generates an error. How can I fix it?

Question

My code is done in angular.js and I am trying to add several elements to the array. something like that:

$scope.my_array=[];
$scope.my_array.push({"element":1});
var data= {"element":2},{"element":3}
$scope.my_array.push(...data);
console.log($scope.my_array) => [{"element":1},{"element":2},{"element":3}]

I am developing in ionic, and in modern cell phones it works. but in cell phones with versions of 4.4 it does not work and this error appears.

"Uncaught SyntaxError: Unexpected token ."

What alternative can I do using good practice?

Looks like spread operator is not supported. Check the version of the browser and support for spread operator. — Barun
– Barun, Commented Jun 24, 2018 at 2:17
ok, but what good practice can I follow, what do you advise me, I would not like to do a cycle "for", maybe there is a better way — yavg
– yavg, Commented Jun 24, 2018 at 2:22
use Babel if you need to support new Javascript syntax for old browsers — Barun
– Barun, Commented Jun 24, 2018 at 2:23

Slartibartfast · Accepted Answer · 2018-06-24 09:43:57Z

1

As mentioned in the comment by Barun, the ... spread syntax isn't supported. Use Array.concat to append the elements from data array to my_array array:

$scope.my_array=[];
$scope.my_array.push({"element":1});
var data= [{"element":2},{"element":3}];
$scope.my_array = $scope.my_array.concat(data);
console.log($scope.my_array);

For more information on JavaScript spread syntax:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_syntax

answered Jun 24, 2018 at 9:43

Slartibartfast

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