created version diff

web/app/assets/javascripts/show_file_version.js

@@ -0,0 +1,27 @@
+function diffUsingJS(viewType) {
+	"use strict";
+	var byId = function (id) { return document.getElementById(id); },
+		base = difflib.stringAsLines(byId("baseText").value),
+		newtxt = difflib.stringAsLines(byId("newText").value),
+		sm = new difflib.SequenceMatcher(base, newtxt),
+		opcodes = sm.get_opcodes(),
+		diffoutputdiv = byId("diffoutput"),
+		contextSize = 100;
+
+	diffoutputdiv.innerHTML = "";
+	contextSize = contextSize || null;
+
+	diffoutputdiv.appendChild(diffview.buildView({
+		baseTextLines: base,
+		newTextLines: newtxt,
+		opcodes: opcodes,
+		baseTextName: "Latest Version",
+		newTextName: "This Version",
+		contextSize: contextSize,
+		viewType: viewType
+	}));
+}
+
+$(document).ready(function(){
+  diffUsingJS(0);
+});