Javascript basics (simple implementation of embedded images)
Below I will bring you a Javascript basics (simple implementation of embedded images). Let me share it with you now and give it as a reference for everyone.
The img element allows us to embed images in HTML documents.
To embed an image, you need to use the src and alt attributes. The code is as follows:
<img src="../img/example/img-map.jpg" alt="Products Image" width="580" height="266" />
Display effect:
##1 Embedding images in hyperlinks
A common use of the img element is to combine it with the a element to create an image-based hyperlink. The code is as follows:<a href="otherpage.html"> <img src="../img/example/img-map.jpg" ismap alt="Products Image" width="580" height="266" /> </a>
https://yexiaochao.github.io/show4cnblogs/otherpage.html?10,8
<body>
<p>The X-coordinate is <b><span id="xco">??</span></b></p>
<p>The Y-coordinate is <b><span id="yco">??</span></b></p>
<script type="application/javascript">
var coords = window.location.href.split('?')[1].split(',');
document.getElementById("xco").innerHTML = coords[0];
document.getElementById("yco").innerHTML = coords[1];
</script>
</body>https://yexiaochao.github.io/show4cnblogs/otherpage.html?10,8
<body>
<p>The X-coordinate is <b><span id="xco">??</span></b></p>
<p>The Y-coordinate is <b><span id="yco">??</span></b></p>
<script type="application/javascript">
var coords = window.location.href.split('?')[1].split(',');
document.getElementById("xco").innerHTML = coords[0];
document.getElementById("yco").innerHTML = coords[1];
</script>
</body>
2 Create a client-side partition response graph
We can create a client-side partition response graph and let the browser navigate to different areas by clicking on different areas on an image. on the URL. This process does not need to be bootstrapped through a server, so elements are used to define the various areas on the image and the behavior they represent. The key element of the client-side partition response graph is map. The map element contains one or more area elements, each of which represents a clickable area on the image. The attributes of the area element can be divided into two categories. The first category deals with the URL that the browser will navigate to after the image area represented by the area is clicked by the user. The diagram below illustrates this type of properties, which are similar to corresponding properties seen on other elements.
<body>
<img src="../img/example/img-map.jpg" ismap alt="Products Image" usemap="#mymap" width="580" height="266" />
<map name="mymap">
<area href="javascript:show_page(1)" shape="rect" coords="'34,60,196,230" alt="product 1" />
<area href="javascript:show_page(2)" shape="rect" coords="'210,60,370,230" alt="product 2" />
<area href="javascript:show_page(3)" shape="rect" coords="'383,60,545,230" alt="product 3" />
</map>
<script type="application/javascript">
function show_page(num){
//通过对话框显示产品，表示对应的跳转页面
alert("This is product "+num);
}
</script>
</body>The display effect is the same, except that when you click on the corresponding product image, the corresponding product name will pop up, indicating the jumped product page.
The above is what I compiled for everyone. I hope it will be helpful to everyone in the future. Related articles:JavaScript function expression (picture and text tutorial)
JavaScript function expression (picture and text tutorial) )
JavascriptInheritance mechanism (detailed answers, graphic tutorial)
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