feat: number and math

Author: brijeshkumar-chavda

05_datatype/01_type_of_datatype.js

@@ -54,4 +54,4 @@ let array = [value1, value2, value3];
 // Function
 function functionName(parameter) {
   return parameter;
-}
+}

05_datatype/02_type_conversion.js

@@ -2,10 +2,13 @@
 
 // Numbers
 
-// WHY
+// What
+// - Type conversion in JavaScript is the process of changing a value from one data type to another. This can happen automatically (called implicit conversion) or manually (called explicit conversion).
+
+// Why
 // - When we are fetching data from server sometimes data will have some numbers value. But the numbers are in string format for e.g. "999". At that time convert this to pure number 999 we need to use type conversion.
 
-// HOW
+// How
 // - Number(): Use this function to convert string formatted number to pure number "999" to 999.
 // - parseFloat(): Use this function to convert string formatted floating number to floating number e.g. "3.14" to 3.14
 // - parseInt(): Use this function to convert string formatted integer number to integer number e.g. "3.14" to 3 .

08_string/1_string.js 08_string/01_string.js

@@ -6,7 +6,7 @@ console.log("Single quotes");
 // Double quote
 console.log("Double quotes");
 
-// Backtick
+// Backtick (Recommended)
 console.log(`Backtick`);
 
 // Multiline string use backtick

08_string/2_escape_sequence.js 08_string/02_escape_sequence.js

@@ -0,0 +1,11 @@
+You're right, this can be a bit confusing at first. In JavaScript, strings can be thought of as having a dual nature: primitive data type and object.
+
+* **Primitive Data Type:** At their core, strings are a fundamental data type in JavaScript. They are used to represent textual data, like words, sentences, or code. In this sense, they are simple building blocks for more complex data structures.
+
+* **Object:** JavaScript also provides String objects, which are wrappers around primitive strings. These objects offer a collection of methods that allow you to manipulate the string data. For instance, you can find the length of a string, search for substrings within it, or convert the string to uppercase or lowercase using these methods.
+
+Here's a key point to remember: Primitive strings are automatically converted to String objects whenever you use a string method on them. This process is called auto-boxing. So, behind the scenes, JavaScript creates a String object, applies the method, and then returns the result.
+
+In essence, you can use strings as basic data types to store text, and when you need to perform operations on those strings, JavaScript provides String objects with built-in functionality.
+
+I hope this clarifies the concept of strings in JavaScript!

08_string/3_string_concatenation.js 08_string/03_string_concatenation.js

@@ -41,6 +41,7 @@
 Sure! Here is a list of all the operators in JavaScript:
 
 ### Arithmetic Operators
+
 - `+` (Addition)
 - `-` (Subtraction)
 - `*` (Multiplication)
@@ -51,6 +52,7 @@ Sure! Here is a list of all the operators in JavaScript:
 - `--` (Decrement)
 
 ### Assignment Operators
+
 - `=` (Assignment)
 - `+=` (Addition assignment)
 - `-=` (Subtraction assignment)
@@ -66,6 +68,7 @@ Sure! Here is a list of all the operators in JavaScript:
 - `^=` (Bitwise XOR assignment)
 
 ### Comparison Operators
+
 - `==` (Equal to)
 - `!=` (Not equal to)
 - `===` (Strict equal to)
@@ -76,11 +79,13 @@ Sure! Here is a list of all the operators in JavaScript:
 - `<=` (Less than or equal to)
 
 ### Logical Operators
+
 - `&&` (Logical AND)
 - `||` (Logical OR)
 - `!` (Logical NOT)
 
 ### Bitwise Operators
+
 - `&` (Bitwise AND)
 - `|` (Bitwise OR)
 - `^` (Bitwise XOR)
@@ -90,19 +95,23 @@ Sure! Here is a list of all the operators in JavaScript:
 - `>>>` (Zero-fill right shift)
 
 ### String Operators
+
 - `+` (Concatenation)
 
 ### Conditional (Ternary) Operator
+
 - `? :` (Conditional)
 
 ### Type Operators
+
 - `typeof`
 - `instanceof`
 - `in`
 - `void`
 - `delete`
 
 ### Other Operators
+
 - `,` (Comma operator)
 - `...` (Spread/rest operator)
 
@@ -124,20 +133,20 @@ Sure! Here is a list of all the operators in JavaScript:
    4. While Loop
    5. Do While Loop
 
-9.  Break & Continue
+9. Break & Continue
 
-   1. Break Keyword
-   2. Continue
+10. Break Keyword
+11. Continue
 
-10. Iteration
+12. Iteration
 
-11. String Iteration
-12. Array Iteration
-13. Object Iteration
-14. Set Iteration
-15. Map Iteration
+    1. String Iteration
+    2. Array Iteration
+    3. Object Iteration
+    4. Set Iteration
+    5. Map Iteration
 
-16. String
+13. String
 
     1. Escape Sequence
     2. String Concatenation
@@ -146,7 +155,7 @@ Sure! Here is a list of all the operators in JavaScript:
     5. String Index
     6. String Method
 
-17. Array
+14. Array
     1. Array Are Object
     2. Array Operation
     3. Array Destructure

08_string/4_string_template.js 08_string/04_string_template.js

@@ -0,0 +1,17 @@
+// Numbers
+
+const number = 3.14619;
+console.log(number.toString());
+console.log(number.toFixed(2));
+console.log(number.toPrecision(4));
+
+const loanAmount = 100000;
+console.log(loanAmount.toLocaleString("en-IN"));
+
+// Math
+
+// What
+// - Math is object in JavaScript. 
+// - It has built in method which helps for math related operations. 
+
+console.log(Math);