some js examples

1 files changed, 50 insertions, 1 deletions

diff --git a/scratch.js b/scratch.js
index 1f47ce8..f19d931 100644
--- a/scratch.js
+++ b/scratch.js
@@ -24,4 +24,53 @@
   }
 */
 
-console.log("hello, world!")
+//console.log(String('hello lmao wtf').split('.'));
+const sumArray = (arr) => arr.reduce((prev, curr) => prev + curr);
+myArr = [3, 7, 9, 12];
+console.log("the sum of %O array is: %d", myArr, sumArray(myArr));
+
+console.log("%s is %d years old", 'Jesus', 33);
+console.log("%chello, %cworld%c!", "color: blue;", "font-size: 2em;", "/* no CSS rule /*");
+
+// class-like object
+function Person(name) {
+  this.name = name;  // public data member
+  var _age;          // private data member
+
+  function privFunc() {}
+  this.setAge = function(n) { _age = n; }
+  this.getAge = function() { return _age; } // this.age would be undefined age is 'var'ed'
+}
+Person.prototype.funkyName = function() { return this.name + 'ley' } // public method to all
+var kyle = new Person("Kyle");
+console.log(kyle.funkyName());
+
+// convert list to array
+function list() {
+  return Array.prototype.slice.call(arguments)
+}
+let list1 = list(1, 2, 3) // will get converted to [ 1, 2, 3 ]
+console.log(list1);
+
+// split string into words
+var str1 = "this is a string, ayy";
+var words = str1.split(/,| /).map(w => console.log(w));
+
+// .format() implement into built-in String object
+String.prototype.format = function() {
+  var formatted = this;
+  for (var arg in arguments) { //
+    console.log("arg is %s", arg);
+      formatted = formatted.replace("{" + arg + "}", arguments[arg]);
+  }
+  return formatted;
+};
+console.log("{0} is dead, but {1} is alive!".format("ASP", "ASP.NET"));
+
+// .format implement into built-in String object using ES6 declarative approach
+String.prototype.format = function() {
+  return [...arguments].reduce((p,c) => p.replace(/%s/,c), this);
+};
+console.log('Is that a %s or a %s?... No, it\'s %s!'.format('plane', 'bird', 'SOman'));
+
+console.log((function(){}).constructor);