From 21256f1fc48ee448626a32d6c41c077dfbaf0e02 Mon Sep 17 00:00:00 2001
From: Sean Fridman <fridman@mail.sfsu.edu>
Date: Tue, 12 May 2015 16:32:43 -0400
Subject: Add some polyfills + utils

---
 site/public/assets/javascripts/vendor/util.js | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

(limited to 'site/public/assets/javascripts/vendor/util.js')

diff --git a/site/public/assets/javascripts/vendor/util.js b/site/public/assets/javascripts/vendor/util.js
index 0f5c6ed..487fe56 100644
--- a/site/public/assets/javascripts/vendor/util.js
+++ b/site/public/assets/javascripts/vendor/util.js
@@ -240,6 +240,27 @@ if (!Function.prototype.bind) {
         };
 }());
 
+/*
+ * Throttle a function to be called no more often
+ * than ms milliseconds
+ */
+function throttle(fn, ms) {
+  ms = ms || 100
+  var ready = true
+  var last
+  return function() {
+    var now = Date.now()
+    if (ready) {
+      last = now
+      return fn.apply(this, arguments)
+      ready = false
+    } else {
+      if (now - last > ms) {
+        ready = true
+      }
+    }
+  }
+}
 
 function selectElementContents(el) {
   if (window.getSelection && document.createRange) {
-- 
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