Version 1

[yaffs-website] / node_modules / throttleit / index.js

diff --git a/node_modules/throttleit/index.js b/node_modules/throttleit/index.js
new file mode 100644 (file)
index 0000000..1cc3ad6
--- /dev/null
+++ b/node_modules/throttleit/index.js
@@ -0,0 +1,32 @@
+module.exports = throttle;
+
+/**
+ * Returns a new function that, when invoked, invokes `func` at most once per `wait` milliseconds.
+ *
+ * @param {Function} func Function to wrap.
+ * @param {Number} wait Number of milliseconds that must elapse between `func` invocations.
+ * @return {Function} A new function that wraps the `func` function passed in.
+ */
+
+function throttle (func, wait) {
+  var ctx, args, rtn, timeoutID; // caching
+  var last = 0;
+
+  return function throttled () {
+    ctx = this;
+    args = arguments;
+    var delta = new Date() - last;
+    if (!timeoutID)
+      if (delta >= wait) call();
+      else timeoutID = setTimeout(call, wait - delta);
+    return rtn;
+  };
+
+  function call () {
+    timeoutID = 0;
+    last = +new Date();
+    rtn = func.apply(ctx, args);
+    ctx = null;
+    args = null;
+  }
+}