cachaito
2/1/2015 - 2:24 PM
Cloning original array
Za: http://davidwalsh.name/javascript-clone-array => The code creates clone of the original array; keep in mind that if objects exist in your array, the references are kept
Wg. http://jsperf.com/copy-array-slice-vs-concat/5 jest minimalnie szybsze.
var myArray = [1,2,3];
//David Walsh;
var clone = myArray.slice(0);
//Nicholas C. Zackas - Wydajny JS str. 124
var clone2 = myArray.concat();
//standardowe kopiowanie przez referencję
var arr = myArray;
arr[0] = 100;
clone; //[1,2,3]
clone2; //[1,2,3]
arr; //[100,2,3]