add prevAll, nextAll traversing methods

Readme.md

@@ -251,6 +251,14 @@ $('.apple').next().hasClass('orange')
 //=> true
 ```
 
+#### .nextAll()
+Gets all the following siblings of the first selected element.
+
+```js
+$('.apple').nextAll()
+//=> [<li class="orange">Orange</li>, <li class="pear">Pear</li>]
+```
+
 #### .prev()
 Gets the previous sibling of the first selected element.
 
@@ -259,6 +267,14 @@ $('.orange').prev().hasClass('apple')
 //=> true
 ```
 
+#### .prevAll()
+Gets all the preceding siblings of the first selected element.
+
+```js
+$('.pear').prevAll()
+//=> [<li class="orange">Orange</li>, <li class="apple">Apple</li>]
+```
+
 #### .slice( start, [end] )
 Gets the elements matching the specified range
 

lib/api/traversing.js

@@ -35,12 +35,24 @@ var next = exports.next = function() {
   return this.make([]);
 };
 
+var nextAll = exports.nextAll = function(selector) {
+  var elems = [], elem = this[0];
+  while ((elem = elem.next)) if (isTag(elem)) elems.push(elem);
+  return this.make(selector ? select(selector, elems) : elems);
+};
+
 var prev = exports.prev = function() {
   var elem = this[0];
   while ((elem = elem.prev)) if (isTag(elem)) return this.make(elem);
   return this.make([]);
 };
 
+var prevAll = exports.prevAll = function(selector) {
+  var elems = [], elem = this[0];
+  while ((elem = elem.prev)) if (isTag(elem)) elems.push(elem);
+  return this.make(selector ? select(selector, elems) : elems);
+};
+
 var siblings = exports.siblings = function(selector) {
   var elems = _.filter(
     this.parent() ? this.parent().children() : this.siblingsAndMe(),

test/api.traversing.js

@@ -79,6 +79,21 @@ describe('$(...)', function() {
 
   });
 
+  describe('.nextAll', function() {
+
+    it('() : should return all following siblings', function() {
+      var elems = $('.apple', fruits).nextAll();
+      expect(elems).to.have.length(2);
+      expect(elems[0].attribs['class']).to.equal('orange');
+      expect(elems[1].attribs['class']).to.equal('pear');
+    });
+
+    it('(no next) : should return empty for last child', function() {
+      expect($('.pear', fruits).nextAll()).to.have.length(0);
+    });
+
+  });
+
   describe('.prev', function() {
 
     it('() : should return previous element', function() {
@@ -92,6 +107,21 @@ describe('$(...)', function() {
 
   });
 
+  describe('.prevAll', function() {
+
+    it('() : should return all preceding siblings', function() {
+      var elems = $('.pear', fruits).prevAll();
+      expect(elems).to.have.length(2);
+      expect(elems[0].attribs['class']).to.equal('orange');
+      expect(elems[1].attribs['class']).to.equal('apple');
+    });
+
+    it('(no prev) : should return empty for first child', function() {
+      expect($('.apple', fruits).prevAll()).to.have.length(0);
+    });
+
+  });
+
   describe('.siblings', function() {
 
     it('() : should get all the siblings', function() {