HTMLJavaScript _
O tópico que estamos discutindo é HTML javascript . Usando JavaScript, você pode criar páginas HTML dinâmicas e interativas.
Um script adiciona interatividade ao seu site adicionando um pequeno trecho de código. O script pode exibir uma mensagem de caixa de alerta pop-up ou exibir um menu suspenso. Um script JavaScript pode ser escrito para este script.
Por exemplo, o exemplo abaixo mostra a hora e a data atuais clicando no botão:
Example:
The HTML <script> Tag
Client-side scripts are often represented utilising the HTML <script> element (JavaScript).
<Script> elements either contain script statements or point to external script files through src attributes.
HTML JavaScript is typically utilized for image manipulation, form validation, and dynamic content changes.
HTML JavaScript utilizes the document.getElementById() method to select HTML elements.
An HTML element with id=”demo” is registered with the JavaScript code “This is JavaScript.”:
Example:
A Taste of JavaScript
JavaScript can be utilized in HTML javascript to accomplish the following:
Content can be modified by JavaScript:
Example:
Styles can be adjusted through JavaScript:
Example:
Another example of javascript styles:
Example:
JavaScript can be used to modify attributes:
Example:
In HTML, the <noscript> tag portrays alternate content for users that do not keep scripts in their web browser or have disabled scripts in their web browsers:
Example:
JavaScript Events for HTML
In JavaScript, an event is something that is performed by the user or the browser, such as a mouse click or a page load in HTML javascript .
Using HTML’s event handler attributes and JavaScript code, events can be handled. See example below:
Example:
HTML can display the following events:
- Form events: resetting, submitting, etc.
- Select events: text area, text field, etc.
- Focus event: blur, focus, etc.
- Mouse events: navigate, select, mouse up, mouse down, click, double click, etc.
| Event Event Name | Handler Name | Occurs when |
|---|---|---|
| onFocus | focus | Every time an input field is focused. |
| onClick | click | Clicking on a form element or link |
| onBlur | blur | Input on the form becomes unfocused in |
| onLoad | load | During the loading of a page by a browser. |
| onSubmit | submit | A form is submitted by a user. |
| onSelect | select | Form input field is selected by the user. |
HTML Script Tags
| Tag | Overview |
|---|---|
| <script> | Creates a script that runs on the browser’s. |
| <noscript> | Feeds alternate content for users who don’t keep client-side scripting |
Here is a complete list of all HTML tags.
Advantages of HTML JavaScript
HTML and JavaScript are widely used programming languages for creating websites and web applications. When these two languages are combined, they offer several benefits, including:
Enhanced user experience : Using JavaScript with HTML allows web developers to create dynamic, interactive, and user-friendly web pages that provide an enhanced user experience.
Improved functionality : JavaScript enables developers to add functionality to HTML pages, such as form validation, animation, and interactive elements like sliders, dropdown menus, and pop-ups.
Easy integration : HTML and JavaScript can be seamlessly integrated with other web technologies, such as CSS and server-side programming languages, to create a robust and comprehensive web application.
Universal support : Both HTML and JavaScript are supported by all major web browsers, making them a universal language for creating web pages and applications.
Better SEO : HTML provides a structured way to organize content on a web page, and using JavaScript to create dynamic and interactive content can improve search engine optimization (SEO) by making the page more engaging and informative to users.
Increased accessibility : HTML provides accessibility features that enable users with disabilities to access web content. By using JavaScript to create interactive and dynamic content, it can further enhance accessibility.
