Update javascript_for_web.js

Strings operations

Author: TimzOwen

javascript_for_web.js

@@ -57,3 +57,120 @@ myVar--;
 var myDecimal = 10.56;
 var decimalMultiplication = 2.5 * 2.5;
 var decimalDivision = 10.2 / 2.5;
+
+//remainder in java script using modulus "%""
+var remainder;
+remainder = 15 % 2;
+
+//augmented addition and subtraction js
+var a = 2;
+var b = 3;
+var c = 5;
+
+a += 10;
+b += 12;
+c += 15;
+console.log(a) //gives12
+console.log(b) //15
+console.log(c) //20
+
+var a = 10;
+var b = 9;
+var c = 3;
+
+a -= 3;
+b -= 5;
+c -= 5;
+console.log(a) //gives 7
+console.log(b) //4
+console.log(c) //-2
+
+var a = 5;
+var b = 12;
+var c = 4.6;
+
+// Only modify code below this line
+
+a *= 5;
+b *= 3;
+c *= 10;
+console.log(a) //gives 25
+console.log(b) //36
+console.log(c) //46
+
+var a = 48;
+var b = 108;
+var c = 33;
+
+// Only modify code below this line
+
+a /= 12;
+b /= 4;
+c /= 11;
+console.log(a) //gives 4
+console.log(b) // 27
+console.log(c) //3
+
+//String variables
+// Example
+var firstName = "Alan";
+var lastName = "Turing";
+
+// Only change code below this line and create your new Name
+var myFirstName = "Owen";
+var myLastName = "Timz";
+
+//escaping literal quotes in strings using back slashes
+var myStr = "I am \"double quoted\" string inside \"double quotes\"";
+
+//quoting strings with single quotes
+var myString = '\"I am coming today\" said the master ';
+
+//escape sequences
+/*
+Code Output
+    FirstLine
+        \SecondLine
+    ThirdLine
+
+ \'	single quote
+ \"	double quote
+\\backslash
+\ n newline
+\ r carriage return
+\ t tab
+\ b word boundary
+\ f form feed
+*/
+var myStr = "FirstLine\n\t\\\SecondLine\nThirdLine";
+
+//String Concatenation with + operator
+// =+ operator concatenation
+//String with variables concatenation
+//appending variables to string
+var ourStr = "I come first. " + "I come second.";
+var myStr = "This is the start." + " This is the end.";
+// += operator concatenation
+var ourStr = "I come first. ";
+ourStr += "I come second.";
+
+var myStr = "This is the first sentence. ";
+myStr += "This is the second sentence."
+
+// using String concatenation with +=
+var ourName = "freeCodeCamp";
+var ourStr = "Hello, our name is " + ourName + ", how are you?";
+
+var myName = "owen";
+var myStr = "My name is " + myName + " and I am well!";
+
+//using appending to concatenate Strings
+var anAdjective = "awesome!";
+var ourStr = "freeCodeCamp is ";
+ourStr += anAdjective;
+
+var someAdjective = "using Android studio";
+var myStr = "You can develop mobile apps ";
+myStr += someAdjective;
+
+//finding Lengths os Strings character