This article focuses on beginner friendly Javascript cheat codes for programmers' benefit

Introduction:

No matter how many programming languages have emerged into existence, Java Script has its  stand in being one of the best programming languages that support programmers in every aspect. The open, and cross-platform compatibility has made Java Script popular among programmers. Programmers leverage Java Script to create fast, efficient and ever-evolving websites and browsers. Apart from HTML and CSS, Java Script is the language that programmers prefer as it is the powerhouse behind the ever-dynamic website landscape in the current world scenario. Java Script is also an open course scripting language and easy to implement which makes it more and more desirable among the developers.

Now that we have a clear idea of what Java Script is, let us dive deep into the Java Script cheat codes for beginners in a more comprehensive way.

Java Script Cheat Codes for beginners

Java Script Fundamentals

Attaching Java Script snippet in a HTML Page.

We can attach a java script code in a HTML page by embedding the Java script code within the script tag and attach it to a HTML page as shown below

Adding external Java Script to the HTML Page

An external java script file can be written individually and then be attached within one HTML file. By doing this way, separate java script files can be attached to the single HTML file. For instance if the java script code is composed in filescript.js, we can include it in a HTML file by following the code mentioned below.

Javascript Variables

JavaScript variables are the spaces with names where the names get stored. They can be described as the replacement values that allow us to carry out numerous operations in our code writing processes. JavaScript allows the usage of variables in the following three ways:

var: The variables that are much frequently used in JavaScript is var. The lifetime of the variable is limited to the function it is declared in and cannot exist elsewhere; it can, however, be reinitialized and reassigned inside the same function.

The JavaScript code is executed, and the top of the code implements variables defined using var. An example of a variable declared using the "var" keyword in JavaScript is shown below.

var x = 139; // x variable can be assigned a new value and declared again. Also, x variable is also reassigned a new value and redeclared.

const: In JavaScript js const variables are used only once they make their way into the code. They cannot then be re-assigned values – that is, their values are kept constant over the course of the program – or be re-declared. An example of a variable declared using the "const" keyword in JavaScript is shown below:

x = 4; // variable x cannot be separately or re-declared again (assigned a new value).

let: The let variable like const is also immutable, and also it cannot be redeclared. However, their values may establish another basis for their new life. An example of a variable declared using the "let" keyword in JavaScript is shown below

let x = 125; // , here x is a variable read only, it can be reassigned a new value but it cannot be redeclared.

Java Script Data Types:

Now that we are aware of different Java Script variables, let us have a glimpse at Java Script data types. There are varied types of data types available in Java script like

Numbers: Numbers are nothing but numericals or integer values. An example of the numbers data type is shown below

Var id  = 200

Variables: The variable type surnamed is not committed to a certain value of an object An example of the variable data type is shown below

Var y

Text (strings): String data types of JavaScript are a conflation of multiple characters. An example of the string data type is shown below:

Var demoString = "Hello World"

Operations: The operations in java script usually act as a link between the variables used.

It can be shown as mentioned below

Var sum = 20+10+32

Boolean values: The values which can be either true or false correspond to boolean values. An example of the boolean data type is shown below

booleanValue = true

Java Script Operators

Arithmetic Operators:

Addition (+): Adds two operands.

Subtraction (-): Subtracts second operand from the first.

Multiplication (*): Multiplies two operands.

Division (/): Divides first operand by the second.

Modulus (%): Returns the remainder of a division.

Increment (++): Increases the value of a variable by 1.

Decrement (–): Decreases the value of a variable by 1.

Assignment Operators:

Assignment (=): Assigns a value to a variable.

Addition Assignment (+=): Adds and assigns a value to a variable.

Subtraction Assignment (-=): Subtracts and assigns a value to a variable.

Multiplication Assignment (*=): Multiplies and assigns a value to a variable.

Division Assignment (/=): Divides and assigns a value to a variable.

Modulus Assignment (%=): Computes modulus and assigns a value to a variable.

Comparison Operators:

Equal to (==): Compares two values for equality.

Strict Equal to (===): Compares two values for equality with type checking.

Not Equal to (!=): Compares two values for inequality.

Strict Not Equal to (!==): Compares two values for inequality with type checking.

Greater than (>): Checks if the left operand is greater than the right.

Lesser than (<): Checks if the left operand is lesser than the right.

Greater than or Equal to (>=): Checks if the left operand is greater than or equal to the right.

Lesser than or Equal to (<=): Checks if the left operand is lesser than or equal to the right.

Logical Operators:

Logical AND (&&): Returns true if both operands are true.

Logical OR (||): Returns true if either operand is true.

Logical NOT (!): Returns the opposite of the operand's logical state.

Bitwise Operators:

Bitwise AND (&): Performs bitwise AND between two integers.

Bitwise OR (|): Performs bitwise OR between two integers.

Bitwise XOR (^): Performs bitwise XOR between two integers.

Bitwise NOT (~): Inverts the bits of an integer.

Left Shift (<<): Shifts bits to the left.

Right Shift (>>): Shifts bits to the right.

Unsigned Right Shift (>>>): Shifts bits to the right, filling leftmost bits with zeros.

Conditional (Ternary) Operator:

Ternary (condition ? expr1 : expr2): Evaluates a condition and returns one of two expressions based on whether the condition is true or false.

Relational Operators:

Greater Than (>), Lesser Than (<):  Compares operands values.

Greater Than or Equal To (>=), Lesser Than or Equal To (<=):

Include similarity by means of equalization.

Java Script Arrays

Next up on our JavaScript cheat sheet are arrays. These versatile data structures find applications across various programming languages. Serving as a means to organize variables and attributes, arrays are essentially collections of objects sharing the same type.

var cars = [ "Mercedes", "Tesla","Volvo" ];

Now that we have familiarized how to create arrays, we can execute a lot of intensive operations on them. Let us take a look at some JavaScript methods which can be used to perform various types of operations on arrays:Let us take a look at some JavaScript methods which can be used to perform various types of operations on arrays:

pop(): Finally, the pop() method which is used to remove the last element of the array.

push(): This way works specifically while pushing a new element at the end of an array. So, this method is commonly used for adding new element at the end.

concat(): The purpose of this method is to merge up everything as a single array.

reverse(): This method does a reverse process. It is usually used to reverse the elements of an array.

shift(): This method employs the task of deleting the first element of an array.

slice(): This operation is referred to as the splice method and is utilized to fetch a section of the array into a new one.

splice(): This is the way that allows you to insert different features to the desired locations.

toString(): This is used for converting all elements of array into string type.

unshift(): This is used to add elements in the starting of an array.

valueOf(): This is particularly meant for getting the primitive value of any object.

indexOf(): This method is used for the selection purpose to return the first index at which a given element is found in an array.

lastIndexOf(): This is the technique that helps to locate a particular element index when the last value is returned in an array.

join(): This method employs allowing elements of an array to be put together to form a single string with the string finally being sent back.

sort(): This method is used for collating the array items in a definite way depending on some condition.

Conclusion:  Java Script has been a handy aid for many programmers and this cheat sheet especially applies to the people who are just beginning their journey with JavaScript. Learn more about the JavaScript cheat codes for beginners to get an insight of how the programming works.

FAQs

1. What is JavaScript used for?

Java Script is generally used for developing websites and web pages.

2. Is JavaScript frontend or backend?

Java Script is usually used by the developers for front end operations apart from CSS and HTML

3. What are the two types of syntax in JavaScript?

Javascript syntax reflects two types of values called fixed and variable

4. Is JavaScript easy to learn?

JavaScript is an easy to go programming language for all the beginner programmers

5. Is JavaScript written in C?

Modern innovations like Google V8 engine use JavaScript written in C++.