Add Element#prepend

adambeynon · adambeynon · commit ee3364cf1620 · 2015-03-26T18:18:28.000Z
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,5 +1,7 @@
 ## EDGE
 
+*   Add `Element#prepend` method.
+
 ## 0.3.0 2015-02-03
 
 *   Move all files under `opal/jquery` require namespace, rather than
diff --git a/lib/opal/jquery/element.rb b/lib/opal/jquery/element.rb
@@ -244,6 +244,11 @@ def self.expose(*methods)
   # @param content [String, Element]
   alias_native :append
 
+  # @!method prepend(content)
+  #
+  # @param content [String, Element]
+  alias_native :prepend
+
   # @!method serialize
   alias_native :serialize
 
diff --git a/spec/element/prepend_spec.rb b/spec/element/prepend_spec.rb
@@ -0,0 +1,21 @@
+require 'spec_helper'
+
+describe 'Element#prepend' do
+  html <<-HTML
+    <div id="foo"></div>
+    <div id="bar">
+      <p>Something</p>
+    </div>
+  HTML
+
+  it 'inserts the given html to beginning of element' do
+    foo = Element.find '#foo'
+    bar = Element.find '#bar'
+
+    foo.prepend '<span>Bore Da</span>'
+    expect(foo.children.first.text).to eq 'Bore Da'
+
+    bar.prepend '<span>Charlie</span>'
+    expect(bar.children.first.text).to eq 'Charlie'
+  end
+end
