js optimize coding technique 🗽👨‍💻

Author: lgope

js-coding-technique/for-loop.js

@@ -30,3 +30,16 @@ arr.forEach(consoleArrayElements);
 // arr[1] = 5
 // arr[1] = 8
 // arr[2] = 9
+
+// Bad:
+var i;
+for (i = 0; i < arr.length; i++) {
+  // something....
+}
+
+// Better Code:
+var i;
+var len = arr.length;
+for (i = 0; i < len; i++) {
+  // something....
+}

js-coding-technique/function.js

@@ -0,0 +1,17 @@
+// Longhand:
+
+function myFunction(myString, myNumber, myObject, myArray, myBoolean) {
+  // do something...
+}
+myFunction('String', 1, [], {}, true);
+
+/** */
+
+// Shorthand
+function myFunction() {
+  console.log(arguments.length); // Returns 5
+  for (i = 0; i < arguments.length; i++) {
+    console.log(typeof arguments[i]); // Returns string, number, object, object, boolean
+  }
+}
+myFunction('String', 1, [], {}, true);