This document provides an overview of functions in JavaScript. It discusses functions as objects that have a [[Call]] property allowing them to be executed. It describes function declarations vs expressions and how declarations are hoisted. Functions can be treated as values that can be assigned to variables or passed as arguments. Parameters and the arguments object are covered. The document also discusses mimicking function overloading, using functions as object methods, and how the this keyword works differently depending on how a function is called using call, apply, or bind.
JavaScript Arithmetic Operators
Arithmetic operators are used to perform arithmetic between variables and/or values.
JavaScript Assignment Operators
Assignment operators are used to assign values to JavaScript variables.
JavaScript String Operators
The + operator, and the += operator can also be used to concatenate (add) strings.
Comparison Operators
Comparison operators are used in logical statements to determine equality or difference between variables or values.
Conditional (Ternary) Operator
The conditional operator assigns a value to a variable based on a condition.
Logical Operators
Logical operators are used to determine the logic between variables or values.
JavaScript Bitwise Operators
Bit operators work on 32 bits numbers. Any numeric operand in the operation is converted into a 32 bit number. The result is converted back to a JavaScript number.
The delete Operator
The delete operator deletes a property from an object:
A JavaScript function is a block of code designed to perform a particular task.
Why Functions?
You can reuse code: Define the code once, and use it many times. You can use the same code many times with different arguments, to produce different results.
This the slide stack for the two videos on Data types in my YouTube series on JavaScript. The videos are at https://www.youtube.com/watch?v=UAtJXkGggOU and https://www.youtube.com/watch?v=H2sjsGZyYaw
JavaScript Arithmetic Operators
Arithmetic operators are used to perform arithmetic between variables and/or values.
JavaScript Assignment Operators
Assignment operators are used to assign values to JavaScript variables.
JavaScript String Operators
The + operator, and the += operator can also be used to concatenate (add) strings.
Comparison Operators
Comparison operators are used in logical statements to determine equality or difference between variables or values.
Conditional (Ternary) Operator
The conditional operator assigns a value to a variable based on a condition.
Logical Operators
Logical operators are used to determine the logic between variables or values.
JavaScript Bitwise Operators
Bit operators work on 32 bits numbers. Any numeric operand in the operation is converted into a 32 bit number. The result is converted back to a JavaScript number.
The delete Operator
The delete operator deletes a property from an object:
A JavaScript function is a block of code designed to perform a particular task.
Why Functions?
You can reuse code: Define the code once, and use it many times. You can use the same code many times with different arguments, to produce different results.
This the slide stack for the two videos on Data types in my YouTube series on JavaScript. The videos are at https://www.youtube.com/watch?v=UAtJXkGggOU and https://www.youtube.com/watch?v=H2sjsGZyYaw
In JavaScript, almost "everything" is an object.
-Booleans can be objects (if defined with the new keyword)
-Numbers can be objects (if defined with the new keyword)
-Strings can be objects (if defined with the new keyword)
-Dates are always objects
-Maths are always objects
-Regular expressions are always objects
-Arrays are always objects
-Functions are always objects
-Objects are always objects
JavaScript - Chapter 4 - Types and StatementsWebStackAcademy
A computer program is a list of "instructions" to be "executed" by a computer.
In a programming language, these programming instructions are called statements.
A JavaScript program is a list of programming statements.
JavaScript statements are composed of:
Values, Operators, Expressions, Keywords, and Comments.
This statement tells the browser to write "Hello Dolly." inside an HTML element with id="demo":
JavaScript Data Types
JavaScript variables can hold many data types: numbers, strings, objects and more.
In programming, data types is an important concept.
To be able to operate on variables, it is important to know something about the type.
What is the DOM?
The DOM is a W3C (World Wide Web Consortium) standard.
The DOM defines a standard for accessing documents:
"The W3C Document Object Model (DOM) is a platform and language-neutral interface that allows programs and scripts to dynamically access and update the content, structure, and style of a document."
The W3C DOM standard is separated into 3 different parts:
Core DOM - standard model for all document types
XML DOM - standard model for XML documents
HTML DOM - standard model for HTML documents
The HTML DOM (Document Object Model)
When a web page is loaded, the browser creates a Document Object Model of the page.
The HTML DOM model is constructed as a tree of Objects.
With the HTML DOM, JavaScript can access and change all the elements of an HTML document.
Introduction to JavaScript course. The course was updated in 2014-15.
Will allow you to understand what is JavaScript, what's it history and how you can use it.
The set of slides "Introduction to jQuery" is a follow up - which would allow the reader to have a basic understanding across JavaScript and jQuery.
JavaScript Module Patterns: How to build and use JavaScript modules. We cover the Basic Module Pattern, Revealing Module Pattern, CommonJS, AMD, CommonJS, UMD and ES6 modules.
In JavaScript, almost "everything" is an object.
-Booleans can be objects (if defined with the new keyword)
-Numbers can be objects (if defined with the new keyword)
-Strings can be objects (if defined with the new keyword)
-Dates are always objects
-Maths are always objects
-Regular expressions are always objects
-Arrays are always objects
-Functions are always objects
-Objects are always objects
JavaScript - Chapter 4 - Types and StatementsWebStackAcademy
A computer program is a list of "instructions" to be "executed" by a computer.
In a programming language, these programming instructions are called statements.
A JavaScript program is a list of programming statements.
JavaScript statements are composed of:
Values, Operators, Expressions, Keywords, and Comments.
This statement tells the browser to write "Hello Dolly." inside an HTML element with id="demo":
JavaScript Data Types
JavaScript variables can hold many data types: numbers, strings, objects and more.
In programming, data types is an important concept.
To be able to operate on variables, it is important to know something about the type.
What is the DOM?
The DOM is a W3C (World Wide Web Consortium) standard.
The DOM defines a standard for accessing documents:
"The W3C Document Object Model (DOM) is a platform and language-neutral interface that allows programs and scripts to dynamically access and update the content, structure, and style of a document."
The W3C DOM standard is separated into 3 different parts:
Core DOM - standard model for all document types
XML DOM - standard model for XML documents
HTML DOM - standard model for HTML documents
The HTML DOM (Document Object Model)
When a web page is loaded, the browser creates a Document Object Model of the page.
The HTML DOM model is constructed as a tree of Objects.
With the HTML DOM, JavaScript can access and change all the elements of an HTML document.
Introduction to JavaScript course. The course was updated in 2014-15.
Will allow you to understand what is JavaScript, what's it history and how you can use it.
The set of slides "Introduction to jQuery" is a follow up - which would allow the reader to have a basic understanding across JavaScript and jQuery.
JavaScript Module Patterns: How to build and use JavaScript modules. We cover the Basic Module Pattern, Revealing Module Pattern, CommonJS, AMD, CommonJS, UMD and ES6 modules.
In this file, MarsDevs illustrates functions in Python, the function argument, and the keyword argument. We use various examples with code to understand the concept better.
Click here to know more: https://www.marsdevs.com/blogs/functions-and-arguments-in-python
A function provides a convenient way of packaging a computational recipe, so that it can be used as often as required. A function definition consists of two parts: interface and body. The interface of a function (also called its prototype) specifies how it may be used. It consists of three entities:
The function name. This is simply a unique identifier.
The function parameters (also called its signature). This is a set of zero or more typed identifiers used for passing values to and from the function.
The function return type. This specifies the type of value the function returns. A function which returns nothing should have the return type void.
The body of a function contains the computational steps (statements) that comprise the function.
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
Whether you're a developer, tester, or QA professional, this webinar will give you valuable insights into how AI is shaping the future of software delivery.
Let's dive deeper into the world of ODC! Ricardo Alves (OutSystems) will join us to tell all about the new Data Fabric. After that, Sezen de Bruijn (OutSystems) will get into the details on how to best design a sturdy architecture within ODC.
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
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Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
2. Table of content
1. Functions in javascript.
2. Declaration VS Expression.
3. Functions as values
4. Parameters
5. Overloading
6. Final slides with:
3. Here you could give a brief description of
the topic you want to talk about. For
example, if you want to talk about Mercury,
you could say that it’s the smallest planet
ABOUT THIS TOPIC
4. Functions are actually objects in
javascript.
The presence of an internal property
named [[Call]] is what makes function
special for any other object.
Function in javascript
5. The [[Call]] property is unique to functions and indicates that the
object can be executed.
[[Call]]
7. which begins with the function keyword and includes the name of
the function immediately following it. The contents of the function
are enclosed in braces, as shown in this declaration:
Declarations
Function declarations are hoisted
to the top of the context.
Hoisted means you can actually define a
function after it is used in code without
generating an error
8. Declarations
Function declarations are hoisted to the top of the context.
Hoisted means you can actually define a function after it is used in code without
generating an error, for example:
JavaScript engine hoists the function
declaration to the top and actually
executes the code as if it were
written.
9. Function Expression which doesn’t require a name after function
(anonymous), Instead, function expressions are typically referenced
via a variable or property, as in this expression:
Expression
This code actually assigns a
function value to the
variable sub.
semicolon at the end.
11. you can use Javascript Functions just as you do any other objects.
You can assign them to variables, add them to objects, pass them
to other functions as arguments, and return them from functions.
Functions as values
Both greet and greet are now
pointing to the same function,
and that means either can be
executed
12. take a look at the same code rewritten to use the Function
constructor:
Functions as values
14. You can pass any number of parameters to any function
without causing an error.
Parameters
function parameters are actually stored as an array-like structure called
arguments.
there is a length property to determine how many values are present
15. Here’s a simple example using arguments and
function arity; note that the number of
arguments passed to the function has no effect
on the reported arity:
Paramters Single named parameter
The length property is 1 because there is a
single named parameter
No error here when the second
parameter is passed
16. using arguments is actually more
effective than naming parameters
suppose you want to create a
function that accepts any number
of parameters and returns their
sum
18. Overloading is the ability of a single function
to have multiple signatures
Overlaoding
A function signature is made up of the function name plus the number
and type of parameters the function expects.
19. JavaScript functions don’t actually have signatures. A lack of function
signatures also means a lack of function overloading. Look at what
happens when you try to declare two functions with the same name:
Lack of function signature
In JavaScript, when you define
multiple functions with the
same name, the one that
appears last in your code wins.
20. Looking at the code this way makes it clear why the previous code didn’t work. A
function object is being assigned to sayMessage twice in a row, so it makes sense
that the first function object would be lost
24. When a property value is actually a function, the property is considered
a method.
Object method
For example, in the following code,
the person variable is assigned an
object literal with a name property
and a method called sayName.
You can then call the method directly
from the object as in
person.sayName("Alaref").
25. You may have noticed something strange in the previous example. The sayName()
method references person.name directly which creates tight coupling between the
method and the object.
The this object
There are two Problems of tight coupling:
1 - if you change the variable name, you also need to remember to
change the reference to that name in the method.
2 - this sort of tight coupling makes it difficult to use the same
function for different objects.
26. Every scope in JavaScript has a this object that represents the calling object for
the function.
In the global scope, this represents the global object (window in web browsers).
The this object
When a function is called while attached to an object, the value of this is equal
to that object by default. So, instead of directly referencing an object inside a
method, you can reference this instead
27. The this object
For example, you can rewrite the code from the previous example to use this:
This code works the same as the
earlier version, but this time,
sayName() references this instead of
person.
28. you can easily change the name of the variable or
even reuse the function on different objects.
The this object
In this example, a function called sayName is
defined first. Then, two object literals are
created that assign sayName to be equal to the
sayNameForAll function
The last part of this example defines a global
variable called name. When sayNameForAll() is
called directly
Property of
Global object
Reference
values
30. Even though this is typically assigned automatically, you can change its value
to achieve different goals. There are three functions methods that allow you
to change the value of this :
Changing this
● The call() method.
● The apply() method.
● The bind() method.
32. ● The call() method executes the function with a particular this value and
with specific parameters.
● The first parameter of call() is the value to which this should be equal
when the function is executed
● All subsequent parameters are the parameters that should be passed into
the function
The call() method
33. For example, suppose you update sayNameForAll() to take a parameter
The call() method
no parentheses after the function name
because it is accessed as an object
34. The apply() method works exactly the same as call() except that it accepts only
two parameters:
1. the value for this.
2. and an array or array-like object of parameters to pass to the function
instead of individually naming each parameter using call(), you can easily
pass arrays to apply() as the second argument.
Note that you can use an arguments object as the second parameter
The apply() method
36. The first argument to bind() is the this value for the new function. All
other arguments represent named parameters that should be
permanently set in the new function.
The bind() method
37. The following code shows two examples that use bind(). You create the sayNameForPerson1()
function by binding the this value to person1, while sayNameForPerson2() binds this to person2
and binds the first parameter as "person2".
The bind() method