Criando o seu primeiro script - Curso JavaScript #04
New Section
In this section, the speaker discusses the basics of scripting and introduces JavaScript as a programming language.
Introduction to Scripting
- Scripts are loaded after the base code.
- Create a script by writing in lowercase.
- Choose the appropriate script, not from the top or bottom.
Creating a Basic Example
- Start with a basic example using HTML and JavaScript.
- JavaScript is a programming language, while HTML and CSS are markup and style languages respectively.
- Write JavaScript commands in lowercase letters.
- Demonstration of using
window.alert()command to display a message on the screen.
- Semicolons at the end of each command are optional in modern JavaScript.
Running the Script
- Refreshing the page shows that only content within
<script>tags executes.
- The
window.alert()command displays an alert box with a specified message.
- Interactivity is achieved by clicking "OK" on the alert box.
Simplicity of JavaScript
- Programming in JavaScript is generally simple compared to other languages.
- Some people may claim it's difficult when dealing with more advanced concepts like arrays or vectors, but it's actually straightforward.
New Section
This section covers how HTML, CSS, and JavaScript work together to create web pages.
Understanding HTML, CSS, and JavaScript Interaction
- HTML contains content, CSS provides styling, and JavaScript enables interactivity.
Reviewing Code Structure
- The code consists of HTML for content and CSS for styling.
- Zooming in reveals different sections for each part.
- Additional styles can be added using CSS properties like color.
Overall Summary:
The transcript covers an introduction to scripting with emphasis on creating basic examples using HTML and JavaScript. It explains how scripts are loaded, the role of different languages (HTML, CSS, and JavaScript), and demonstrates interactivity using JavaScript commands. The speaker highlights the simplicity of JavaScript programming and clarifies misconceptions about its difficulty. Additionally, the transcript discusses how HTML, CSS, and JavaScript work together to create web pages.
New Section
In this section, the instructor discusses the importance of combining content, style, and interactivity when developing a website. They also mention recommended bibliography and resources for learning JavaScript.
Importance of Content, Style, and Interactivity
- It is essential to combine content, style, and interactivity when developing a website.
- Recommended bibliography and resources for learning JavaScript are mentioned.
- Techniques to improve code are discussed.
- The importance of starting slowly and gradually progressing in programming is emphasized.
- The role of English language proficiency in programming is questioned.
- Tips for effective studying and learning are provided.
New Section
In this section, the instructor provides two additional commands and encourages students to review previous classes. They also introduce the concept of developing JavaScript scripts.
Introduction to JavaScript Scripts
- Two additional commands -
window.alert()andwindow.confirm()- are introduced.
- Students are encouraged to review previous classes by clicking on the provided link.
- The instructor mentions that they will start developing JavaScript scripts in this class.
New Section
In this section, the instructor demonstrates how to use the window.alert(), window.confirm(), and window.prompt() commands. They emphasize the importance of understanding the basics of JavaScript before moving forward.
Using Alert(), Confirm(), and Prompt()
- The instructor shows an example using
window.alert()command to display a message.
- They demonstrate how
window.confirm()command can be used to ask for user confirmation with Ok or Cancel options.
- The usage of
window.prompt()command to prompt users for input is explained.
- The three commands - alert(), confirm(), prompt() - are summarized as tools for client-side interactivity in web development.
New Section
In this section, the instructor explains the purpose and usage of the alert(), confirm(), and prompt() commands. They also discuss the three parts of web development - content, design, and interactivity.
Understanding Alert(), Confirm(), and Prompt()
- The alert() command displays an alert with only an Ok option.
- The confirm() command asks for user confirmation with Ok or Cancel options.
- The prompt() command prompts users for input.
- Web development is divided into three parts: content (HTML), design (CSS), and interactivity (JavaScript).
New Section
In this section, the instructor emphasizes the importance of understanding the three parts of web development - content, design, and interactivity. They mention that JavaScript plays a crucial role in adding interactivity to websites.
Importance of Content, Design, and Interactivity
- Understanding HTML (content), CSS (design), and JavaScript (interactivity) is essential in web development.
- JavaScript helps add interactivity to websites.
- Students are reminded not to skip foundational classes as they provide important knowledge for building scripts.
New Section
In this section, the instructor addresses a common misconception about learning JavaScript. They explain that JavaScript is used entirely for client-side interactivity in web development.
Misconception about Learning JavaScript
- Some people think it's a waste of time to study the basics of JavaScript.
- The instructor clarifies that JavaScript is used entirely for client-side interactivity in web development.
This summary covers specific sections from the transcript based on provided timestamps.
Learning How to Test
In this section, the speaker discusses the process of testing and mentions that it cannot be done at the moment.
Testing in Future Classes
- The speaker mentions that in future classes, they will learn how to test.
- Currently, it is not possible to test.
No further details or timestamps are provided in the transcript.