kylefang/angular.js
1
0
Fork 0
mirror of https://github.com/zhigang1992/angular.js.git synced 2026-04-09 09:00:34 +08:00
Code Issues Packages Projects Releases Wiki Activity

perf(shallowCopy): use Object.keys to improve performance

Browse Source 
This change is not IE8 friendly
This commit is contained in:
Igor Minar
2014-06-04 07:20:19 -07:00
committed by rodyhaddad
parent 55991e33af
commit 04468db441
1 changed files with 8 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
src/Angular.js
View File

@@ -819,17 +819,22 @@ function copy(source, destination, stackSource, stackDest) {
* Creates a shallow copy of an object, an array or a primitive
*/
function shallowCopy(src, dst) {
var i = 0;
if (isArray(src)) {
dst = dst || [];
for ( var i = 0; i < src.length; i++) {
for (; i < src.length; i++) {
dst[i] = src[i];
}
} else if (isObject(src)) {
dst = dst || {};
for (var key in src) {
if (hasOwnProperty.call(src, key) && !(key.charAt(0) === '$' && key.charAt(1) === '$')) {
var keys = Object.keys(src);
for (var l = keys.length; i < l; i++) {
var key = keys[i];
if (!(key.charAt(0) === '$' && key.charAt(1) === '$')) {
dst[key] = src[key];
}
}