Boolean

Boolean is the built-in object corresponding to the primitive Boolean data type. JavaScript boolean can have one of two values: true or false.

Primitive Values
var primitiveTrue = true;
var primitiveFalse = false;

Boolean Function
var functionTrue = Boolean(true);
var functionFalse = Boolean(flase);

Boolean Constructor
var constructorTrue = new Boolean(true);
var constructorFalse = new Boolean(false);

Boolean

If value parameter is omitted or is 0, -0, null, false, NaN, undefined, or the empty string (“”), the object has an initial value of false.

String

A string is a built-in object corresponding to the primitive string data type.
A string is a group of characters.

String

Primitive
var str = “Hello DevopsSchool”;——————————
var str = „Hello DevopsSchool‟; ——————————String
var str = Hello DevopsSchool;—————————–

Constructor
var str = new String (“Hello DevopsSchool”);——————————
var str = new String („Hello DevopsSchool‟); —————————– Object
var str = new String (Hello DevopsSchool);—————————–

Accessing String

Access String

String Concatenation

Concat Operator

Template Literal/ Template Strings

Template literals are string literals allowing embedded expressions. You can
use multi-line strings and string interpolation features with them.
Template literals are enclosed by the back-tick () character instead of double
or single quotes.

Multiple Line String

String Interpolation

Template literals can contain placeholders. These are indicated by the dollar sign and curly braces
(${expression})

String Methods

• charAt ( )
• charCodeAt( )
• toUpperCase( )
• toLowerCase ( )
• Trim( )
• Replace ( )
• Split ( )
• indexOf( )
• Search ( )
• Slice ( )
• Substring( )
• Substr ()

Tagged : Accessing String / Boolean / data types / Javascript / String