object的倒序排列会在一些特殊环境下造成影响(如数据库字段依赖JSON顺序时)

Galen.Yuan · Galen.Yuan · commit 68311e97ebdf · 2015-12-24T10:14:14.000+08:00
diff --git a/src/observer/index.js b/src/observer/index.js
@@ -48,8 +48,7 @@ export function Observer (value) {
 
 Observer.prototype.walk = function (obj) {
   var keys = Object.keys(obj)
-  var i = keys.length
-  while (i--) {
+  for (var i = 0, l = keys.length; i < l; i++) {
     this.convert(keys[i], obj[keys[i]])
   }
 }
@@ -61,8 +60,7 @@ Observer.prototype.walk = function (obj) {
  */
 
 Observer.prototype.observeArray = function (items) {
-  var i = items.length
-  while (i--) {
+  for (var i = 0, l = items.length; i < l; i++) {
     observe(items[i])
   }
 }
@@ -126,10 +124,8 @@ function protoAugment (target, src) {
  */
 
 function copyAugment (target, src, keys) {
-  var i = keys.length
-  var key
-  while (i--) {
-    key = keys[i]
+  for (var i = 0, l = keys.length; i < l; i++) {
+    var key = keys[i]
     def(target, key, src[key])
   }
 }

Original file line number	Diff line number	Diff line change
`@@ -48,8 +48,7 @@ export function Observer (value) {`
`48`	`48`
`49`	`49`	`Observer.prototype.walk = function (obj) {`
`50`	`50`	`var keys = Object.keys(obj)`
`51`		`- var i = keys.length`
`52`		`- while (i--) {`
	`51`	`+ for (var i = 0, l = keys.length; i < l; i++) {`
`53`	`52`	`this.convert(keys[i], obj[keys[i]])`
`54`	`53`	`}`
`55`	`54`	`}`
`@@ -61,8 +60,7 @@ Observer.prototype.walk = function (obj) {`
`61`	`60`	`*/`
`62`	`61`
`63`	`62`	`Observer.prototype.observeArray = function (items) {`
`64`		`- var i = items.length`
`65`		`- while (i--) {`
	`63`	`+ for (var i = 0, l = items.length; i < l; i++) {`
`66`	`64`	`observe(items[i])`
`67`	`65`	`}`
`68`	`66`	`}`
`@@ -126,10 +124,8 @@ function protoAugment (target, src) {`
`126`	`124`	`*/`
`127`	`125`
`128`	`126`	`function copyAugment (target, src, keys) {`
`129`		`- var i = keys.length`
`130`		`- var key`
`131`		`- while (i--) {`
`132`		`- key = keys[i]`
	`127`	`+ for (var i = 0, l = keys.length; i < l; i++) {`
	`128`	`+ var key = keys[i]`
`133`	`129`	`def(target, key, src[key])`
`134`	`130`	`}`
`135`	`131`	`}`