What are the ways to write iframe?

Iframe writing methods include basic Iframe writing, nested Iframe writing, adaptive width and height Iframe writing, Iframe writing with styles and attributes, inline Iframe writing and dynamic creation of Iframe using JavaScript. Each writing method has its own characteristics and applicable scenarios. According to actual needs, choosing the appropriate writing method can achieve the required functions and effects.

Iframe is an HTML element used to embed other web pages or documents within a web page. Iframe provides a variety of writing methods, and you can choose the appropriate method according to your needs. The following are several common Iframe writing methods:

1. Basic Iframe writing method:

iframe src= "URL" width="Width" height="Height">iframe>

Among them, the src attribute is used to specify the URL of the embedded web page or document, and the width and height attributes are used to specify the width and height of the Iframe respectively.

2. Nested Iframe writing method:

iframe src="URL1" width="Width1" height="Height 1"> iframe src="URL2" width="Width2" height="Height 2">iframe> iframe>

This writing method can nest multiple Iframes to achieve a multi-layer nesting effect. The inner Iframe will be displayed in the outer Iframe.

3. Writing method of Iframe with adaptive width and height:

style>  .responsive-iframe {    position: relative;    padding-bottom: 56.25%;    height: 0;    overflow: hidden;  }  .responsive-iframe iframe {    position: absolute;    top: 0;    left: 0;    width: 100%;    height: 100%;  }style>div class= "responsive-iframe"> iframe src="URL" frameborder="0" allowfullscreen>iframe>##div>

This writing method uses CSS to achieve the effect of adaptive width and height. The Iframe will automatically adjust the height according to the width of the container, keeping the proportion unchanged.

4. How to write Iframe with styles and attributes:

iframe src="URL" width="Width" height="Height" frameborder="0" scrolling="auto" allowfullscreen>iframe>

This way of writing can be done by setting attributes such as frameborder, scrolling and allowfullscreen. Control the Iframe's borders, scroll bars, full-screen display and other behaviors.

5. How to write inline Iframe:

iframe srcdoc="Hello, World!" width="Width" height="Height">iframe>

This writing method can be embedded directly in the Iframe HTML code instead of specifying the external URL via the src attribute. HTML content can be written in the srcdoc attribute to achieve the inline effect.

6. Use JavaScript to dynamically create an Iframe. Writing method:

script> var iframe = document.createElement('iframe'); iframe.src = 'URL'; iframe.width = 'width'; iframe.height = 'height'; document.body.appendChild(iframe); script>

This writing method uses JavaScript to dynamically create an Iframe element, set attributes such as src, width, and height, and then add the Iframe to the document. middle.

The above are several common Iframe writing methods. Each writing method has its own characteristics and applicable scenarios. According to actual needs, choosing the appropriate writing method can achieve the required functions and effects.

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