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Use of html img tag

韦小宝

Dec 02, 2017 am 10:26 AM

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This article explains in detail the various functions of the picture tag in html. Pictures are definitely indispensable in a html page, The img tag of html is also very simple and easy to master. Let’s take a look!

img displays this map uses a relative path such as:

<img  src="/static/imghwm/default1.png"  data-src="./imgs/002.jpg"  class="lazy"   alt="Use of html img tag" >

Development tips: In actual development, it will generally be in the project directory Create an imgs folder and put all the image resources in it to facilitate image calling during development. As shown above, ./imgs is the directory where the image is found, and /002.jpg is the image to be selected.

img displays web page images using absolute paths, such as:

<img  src="/static/imghwm/default1.png"  data-src="https://ss0.bdstatic.com/5aV1bjqh_Q23odCf/static/superman/img/logo/bd_logo1_31bdc765.png"  class="lazy"  / alt="Use of html img tag" >

There are many attributes to choose from under img:

1. alt indicates the display content when the image is loaded incorrectly, so that visitors can know the purpose of the image.

For example:

<img src="/static/imghwm/default1.png"  data-src="./imgs/001.jpg12"  class="lazy"   alt="logo">

The displayed result is:

means that this picture is a logo picture.

2. align indicates the position where the image is aligned in the text.

top is aligned at the top, bottom is aligned at the bottom, and middle is aligned in the middle. Defaults to bottom alignment.

Two suspension effects: the left image floats to the left of the text, and the right image floats to the right of the text.

3. Change the size of the picture through width and height

The code demonstration of 2 and 3 is as follows

<p>一张百度logo<img  src="/static/imghwm/default1.png"  data-src="./imgs/001.jpg"  class="lazy"      style="max-width:90%"/ alt="Use of html img tag" ></p>
<p>一张百度logo<img  src="/static/imghwm/default1.png"  data-src="./imgs/001.jpg"  class="lazy"   align="top"    style="max-width:90%"/ alt="Use of html img tag" ></p>
<p>一张logo<img  src="/static/imghwm/default1.png"  data-src="./imgs/002.jpg"  class="lazy"   align="bottom"    style="max-width:90%" alt="Use of html img tag" ></p>
<p>百度logo<img  src="/static/imghwm/default1.png"  data-src="./imgs/002.jpg"  class="lazy"   align="middle"    style="max-width:90%" alt="Use of html img tag" ></p>
<p>百度logo<img  src="/static/imghwm/default1.png"  data-src="./imgs/002.jpg"  class="lazy"   align="left"    style="max-width:90%" alt="Use of html img tag" ></p>
<p>百度logo<img  src="/static/imghwm/default1.png"  data-src="./imgs/002.jpg"  class="lazy"   align="right"    style="max-width:90%" alt="Use of html img tag" ></p>

The pictures are all under relative paths Local picture

4. Click the picture to open another link

<p>点击图片打开链接 <a href="page1.html" title="点击进入page1界面"> <img src="/static/imghwm/default1.png"  data-src="./imgs/001.jpg"  class="lazy"   alt="logo"    style="max-width:90%" align="middle"/></a></p>

where page1.html is Another html document, the code is as follows:

<html>
<head>
    <title>page1界面</title>
</head>
<body>
    <p>我是page1</p>
</body>
</html>

Clicking on the image will open page1.html.

5. Image mapping

<img src="/static/imghwm/default1.png"  data-src="page.jpg"  class="lazy"   border="0" usemap="#page" alt="pages" />
<map name="page" id="page">
    <area shape="circle" coords="180,139,14" href ="page1.html" alt="page1" />
    <area shape="circle" coords="129,161,10" href ="page2.html" alt="page2" />
</map>

area and map are used together, and area is under the map tag. The usemap of img points to the name of the map. Click on different positions of the picture to enter two different links, page1 or page2.

The above is all about the use of html img tags. I hope it will be helpful to everyone.

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Detailed graphic explanation of the difference between alt and title in the img attribute

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