How to insert images on HTML-HTML Tutorial-php.cn

How to insert images on HTML

清浅

Release： 2018-12-04 15:55:02

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Methods to insert pictures into HTML include: insert directly into the html code, insert into the CSS style, insert the picture by setting the src value for img in JavaScript, and insert the img attribute into innerHTML to insert the picture

If there are only text in a page, it will look very monotonous and boring, but when we add some pictures to it, it will look much better. Today we will introduce to you how to insert pictures on HTML pages.

【Recommended courses: HTML course、JavaScript course】

Inserting pictures into HTML pages requires the use of the tag in html

<img src="" alt="">

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img stands for "image", which is the image displayed on the page.

src stands for "source". It tells the browser where to find the image. When writing code, it is best to save the image in a folder. In this way, you can use the subdirectory name in front of the name. Calling the image

alt represents "text" and tells the browser that if the image cannot be found, just display the text, or hover the mouse over the image and the set text will pop up

Web image format

.gif: It is a simple format, consisting of a series of colorful picture elements or points, arranged into a picture, which is an animated picture

.png: Similar to the gif format but it has partial transparency options and only supports lossless compression.

.JPEG: JPEG format is currently the most popular image format on the Internet. It is a format that can compress files to the smallest format.

HTML image insertion method

Insert images directly into the html code

<img src="images/1.jpg">

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Rendering:

How to insert images on HTML

Insert images in CSS styles

<style>
div{
width:450px;
height: 300px;
background-image: url("images/2.jpg")
}
</style>
</head>
<body>
<div></div>

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Rendering:

How to insert images on HTML

Use JavaScript language to insert pictures

<body>
<img id="demo">
<script>
	var demo=document.getElementById("demo");
	demo.src="images/3.jpg";
	demo.width="450";
	demo.height="300";
</script>
</body>

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Rendering:

Image 5.jpg

##innerHTML method to insert pictures

<div id="demo"></div>
<script>
	var demo=document.ElementById("demo");
	demo.innerHTML=&#39;<img src="images/4.jpg" width="450px" height="300px">&#39;;
</script>

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Rendering:

Image 7.jpg

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