Iframes are an essential part of HTML web development. They are used to display external content such as photos, videos, advertisements, social media feeds, and web pages.
Iframes are flexible and easy to use HTML elements that make it possible to embed content from one website to another. In this article, we will explore what Iframes are and their attributes, including how to specify their size and change their source using JavaScript and JQuery.
Understanding Iframe and its Attributes
Definition and Usage of Iframe
An Iframe, also known as an inline frame, is an HTML element that displays external content within a web page. It is referenced by a URL and enclosed within an HTML page.
When a user visits a website that contains an Iframe, the content within the Iframe is displayed within the same page.
Iframes can be used for various purposes, including displaying maps, videos, shopping carts, and social media feeds.
They are also used to ensure that users can access multiple independent Web applications simultaneously.
Specifying Iframe Size with Attributes and CSS
Specifying the size of Iframes ensures that they fit within the page layout and provide a seamless viewing experience for users. Height and width attributes are used to specify the dimensions of the Iframe.
For instance, to set the height and width of an Iframe, the following code can be used:
In addition to using attributes, CSS can be used to manipulate the dimensions of the Iframe. Using the style attribute, we can set the dimensions using CSS.
The following code applies CSS to an Iframe:
Changing Iframe Source with JavaScript and JQuery
Changing Iframe Source in JavaScript with getElementById()
Changing the source of an Iframe is crucial in web development. It provides an interactive viewing experience and allows users to access different types of content without leaving the website.
To change the source of an Iframe using JavaScript, we can use the getElementById() method. This method retrieves the Iframe by ID and sets the source to a new URL.
The following code demonstrates how to change the source of an Iframe using getElementById():
var iframe = document.getElementById(‘myiframe’);
iframe.src = “https://www.newsource.com”;
Alternative Way to Change Iframe Source in JQuery with attr() Method
JQuery is a JavaScript library that provides a concise way of accessing and manipulating the HTML DOM. The attr() method in JQuery can be used to change the iframe source.
The following JQuery code demonstrates how to change the source of an Iframe:
$(‘#myiframe’).attr(‘src’, ‘https://www.newsource.com’);
Conclusion
In conclusion, Iframes are a powerful HTML element that enables developers to display external content on a web page seamlessly. It provides a user-friendly experience by allowing users to access different types of content without leaving the website.
In this article, we have explored what Iframes are and their attributes, including how to specify their size and change their source using JavaScript and JQuery. By mastering Iframes, you can create an immersive and interactive web experience for your users.
References:
W3Schools. (n.d.).
HTML IFrame | HTML Inline Frame. Retrieved August 13, 2021, from https://www.w3schools.com/tags/tag_iframe.asp
W3Schools.
(n.d.). HTML Iframes.
Retrieved August 13, 2021, from https://www.w3schools.com/html/html_iframe.asp
W3Schools. (n.d.).
jQuery attr() Method. Retrieved August 13, 2021, from https://www.w3schools.com/jquery/html_attr.asp
Written by: Clara Obi.
In conclusion, Iframes are an essential part of HTML web development, and this article explored their definition, usage, and attributes. We discussed how to specify Iframe size using attributes or CSS and outlined two ways of changing Iframe sources using JavaScript and jQuery.
By mastering Iframes, developers can create a seamless and interactive browsing experience for users. The importance of Iframes cannot be overstated as they provide flexibility, accessibility, and a user-friendly experience.
The key takeaway from this article is to explore Iframes as an innovative way to engage users with external content while providing a seamless experience.