docs(*): document the breaking change in 7ceb5f6

Author: gkalpak

CHANGELOG.md

@@ -172,6 +172,9 @@ consolidating all the changes shown in the previous 1.6.0 release candidates.**
     ([369fb7](https://github.com/angular/angular.js/commit/369fb7f4f73664bcdab0350701552d8bef6f605e))
   - don't throw for elements with missing `getAttribute`
     ([4e6c14](https://github.com/angular/angular.js/commit/4e6c14dcae4a9a30b3610a288ef8d20db47c4417))
+  - don't get/set properties when getting/setting boolean attributes
+    ([7ceb5f](https://github.com/angular/angular.js/commit/7ceb5f6fcc43d35d1b66c3151ce6a71c60309304),
+    [#14126](https://github.com/angular/angular.js/issues/14126))
   - don't remove a boolean attribute for `.attr(attrName, '')`
     ([3faf45](https://github.com/angular/angular.js/commit/3faf4505732758165083c9d21de71fa9b6983f4a))
   - remove the attribute for `.attr(attribute, null)`
@@ -651,6 +654,48 @@ var bgColor = elem.css('background-color');
 var bgColor = elem.css('backgroundColor');
 ```
 
+- **[7ceb5f](https://github.com/angular/angular.js/commit/7ceb5f6fcc43d35d1b66c3151ce6a71c60309304)**: don't get/set properties when getting/setting boolean attributes
+
+Previously, all boolean attributes were reflected into the corresponding property when calling a
+setter and from the corresponding property when calling a getter, even on elements that don't treat
+those attributes in a special way. Now Angular doesn't do it by itself, but relies on browsers to
+know when to reflect the property. Note that this browser-level conversion differs between browsers;
+if you need to dynamically change the state of an element, you should modify the property, not the
+attribute. See https://jquery.com/upgrade-guide/1.9/#attr-versus-prop- for a more detailed
+description about a related change in jQuery 1.9.
+
+This change aligns jqLite with jQuery 3. To migrate the code follow the example below:
+
+Before:
+
+CSS:
+
+```css
+input[checked="checked"] { ... }
+```
+
+JS:
+
+```js
+elem1.attr('checked', 'checked');
+elem2.attr('checked', false);
+```
+
+After:
+
+CSS:
+
+```css
+input:checked { ... }
+```
+
+JS:
+
+```js
+elem1.prop('checked', true);
+elem2.prop('checked', false);
+```
+
 - **[3faf45](https://github.com/angular/angular.js/commit/3faf4505732758165083c9d21de71fa9b6983f4a)**:
   don't remove a boolean attribute for `.attr(attrName, '')`
 
@@ -1851,6 +1896,7 @@ Please read the [Sandbox Removal Blog Post](http://angularjs.blogspot.com/2016/0
 - **jqLite:**
   - implement `jqLite(f)` as an alias to `jqLite(document).ready(f)` ([369fb7](https://github.com/angular/angular.js/commit/369fb7f4f73664bcdab0350701552d8bef6f605e))
   - don't throw for elements with missing `getAttribute` ([4e6c14](https://github.com/angular/angular.js/commit/4e6c14dcae4a9a30b3610a288ef8d20db47c4417))
+  - don't get/set properties when getting/setting boolean attributes ([7ceb5f](https://github.com/angular/angular.js/commit/7ceb5f6fcc43d35d1b66c3151ce6a71c60309304), [#14126](https://github.com/angular/angular.js/issues/14126))
   - don't remove a boolean attribute for `.attr(attrName, '')` ([3faf45](https://github.com/angular/angular.js/commit/3faf4505732758165083c9d21de71fa9b6983f4a))
   - remove the attribute for `.attr(attribute, null)` ([4e3624](https://github.com/angular/angular.js/commit/4e3624552284d0e725bf6262b2e468cd2c7682fa))
   - return `[]` for `.val()` on `<select multiple>` with no selection ([d882fd](https://github.com/angular/angular.js/commit/d882fde2e532216e7cf424495db1ccb5be1789f8))
@@ -2028,6 +2074,48 @@ var bgColor = elem.css('background-color');
 var bgColor = elem.css('backgroundColor');
 ```
 
+- **[7ceb5f](https://github.com/angular/angular.js/commit/7ceb5f6fcc43d35d1b66c3151ce6a71c60309304)**: don't get/set properties when getting/setting boolean attributes
+
+Previously, all boolean attributes were reflected into the corresponding property when calling a
+setter and from the corresponding property when calling a getter, even on elements that don't treat
+those attributes in a special way. Now Angular doesn't do it by itself, but relies on browsers to
+know when to reflect the property. Note that this browser-level conversion differs between browsers;
+if you need to dynamically change the state of an element, you should modify the property, not the
+attribute. See https://jquery.com/upgrade-guide/1.9/#attr-versus-prop- for a more detailed
+description about a related change in jQuery 1.9.
+
+This change aligns jqLite with jQuery 3. To migrate the code follow the example below:
+
+Before:
+
+CSS:
+
+```css
+input[checked="checked"] { ... }
+```
+
+JS:
+
+```js
+elem1.attr('checked', 'checked');
+elem2.attr('checked', false);
+```
+
+After:
+
+CSS:
+
+```css
+input:checked { ... }
+```
+
+JS:
+
+```js
+elem1.prop('checked', true);
+elem2.prop('checked', false);
+```
+
 - **[3faf45](https://github.com/angular/angular.js/commit/3faf4505732758165083c9d21de71fa9b6983f4a)**: don't remove a boolean attribute for `.attr(attrName, '')`
 
 Before, using the `attr` method with an empty string as a value

docs/content/guide/migration.ngdoc

@@ -90,6 +90,7 @@ commits for more info.
   (see [details](guide/migration#migrate1.5to1.6-ng-misc-jqLite) below):
   - Keys passed to `.data()` and `.css()` are now camelCased in the same way as the jQuery methods
     do.
+  - Getting/setting boolean attributes no longer takes the corresponding properties into account.
   - Setting boolean attributes to empty string no longer removes the attribute.
   - Calling `.val()` on a multiple select will always return an array, even if no option is
     selected.
@@ -881,6 +882,48 @@ var bgColor = elem.css('background-color');
 var bgColor = elem.css('backgroundColor');
 ```
 
+<hr />
+<major />
+**Due to [7ceb5f](https://github.com/angular/angular.js/commit/7ceb5f6fcc43d35d1b66c3151ce6a71c60309304)**,
+getting/setting boolean attributes will no longer take the corresponding properties into account.
+Previously, all boolean attributes were reflected into the corresponding property when calling a
+setter and from the corresponding property when calling a getter, even on elements that don't treat
+those attributes in a special way. Now Angular doesn't do it by itself, but relies on browsers to
+know when to reflect the property. Note that this browser-level conversion differs between browsers;
+if you need to dynamically change the state of an element, you should modify the property, not the
+attribute. See https://jquery.com/upgrade-guide/1.9/#attr-versus-prop- for a more detailed
+description about a related change in jQuery 1.9.
+
+This change aligns jqLite with jQuery 3. To migrate the code follow the example below:
+
+Before:
+
+```css
+/* CSS */
+
+input[checked="checked"] { ... }
+```
+```js
+// JS
+
+elem1.attr('checked', 'checked');
+elem2.attr('checked', false);
+```
+
+After:
+
+```css
+/* CSS */
+
+input:checked { ... }
+```
+```js
+// JS
+
+elem1.prop('checked', true);
+elem2.prop('checked', false);
+```
+
 <hr />
 <major />
 **Due to [3faf45](https://github.com/angular/angular.js/commit/3faf4505732758165083c9d21de71fa9b6983f4a)**,