JS+CSS3 makes image binding mouse movement event amplification
May 23, 2018 pm 03:44 PM
This time I will bring you JS CSS3 to make a picture bound to a mouse move event to amplify. JS CSS3 to make a picture bound to a mouse move event to amplify. What are the precautions? . The following is a practical case. One Get up and take a look.
I was looking at the NetEase website today. When I put the mouse on it, I found that the picture was enlarged, and when I moved the mouse, the picture was reduced, so I tried it myself. The results are as follows.
Method 1: Using js and css3
The effect is as shown:
This implementation is very simple, just use the mouseover and mouseout events of js, but I don’t know how to enlarge the picture from the middle. Let’s try again in the future. The code is as follows:
<!DOCTYPE html>
<html>
<head>
??<title>網(wǎng)易圖片動(dòng)畫</title>
??<style>
????p.img?{
??????width:?220px;
??????height:?170px;
??????margin:?200px?auto;
??????overflow:?hidden;
????}
????img.bigger?{
??????width:?100%;
??????height:100%;
????}
????@keyframes?bigger?{
??????from?{width:?100%;height:?100%;}
??????to?{width:?110%;?height:?110%;}
????}
????@keyframes?smaller?{
??????from?{width:?110%;height:?110%;}
??????to?{width:?100%;?height:?100%;}
????}
??</style>
</head>
<body>
??<p class="img">
????<img class="bigger" src="http://cms-bucket.nosdn.127.net/d9b6afa0bad743f88c1780c3a064202c20170218074455.jpeg?imageView&thumbnail=185y116&quality=85" alt="">
??</p>
??<script>
????var?img?=?document.querySelector("img");
????img.onmouseover?=?function?()?{
??????img.style.cssText?=?"animation:?bigger?2s;width:110%;?height:110%;";
????}
????img.onmouseout?=?function?()?{
??????img.style.cssText?=?"animation:?smaller?2s";
????}
??</script>
</body>
</html> Method 2: Use css3 method
css3 has indeed brought us many benefits, making it easier for us to deal with problems. This can be achieved by using transform:scale();, but this must be used in combination with hover, and the duration of the transition must be set to achieve better results. Without further ado, the effect is as follows:
Isn’t this effect much better? You can see that it expands from the center.
But as long as we add the transform-origin attribute, we can well control the center point of the change, such as:
transform-origin:?0?0; transform-origin:?100%?0; transform-origin:?0?100%; transform-origin:?100%?100%;
means respectively from the upper left corner, upper right corner, lower left corner, The lower right corner expands. As you can imagine, the default transform-origin is 50% 50%.
The source code is as follows:
<!DOCTYPE html>
<html>
<head>
??<title>網(wǎng)易圖片動(dòng)畫</title>
??<style>
????p.img?{
??????width:?220px;
??????height:?170px;
??????margin:?200px?auto;
??????overflow:?hidden;
????}
????img.bigger?{
??????width:?100%;
??????height:100%;
??????transition:transform?2s;
????}
????img.bigger:hover{
??????transform:?scale(1.2,1.2);
????}
??</style>
</head>
<body>
??<p class="img">
????<img class="bigger" src="http://cms-bucket.nosdn.127.net/d9b6afa0bad743f88c1780c3a064202c20170218074455.jpeg?imageView&thumbnail=185y116&quality=85" alt="">
??</p>
</body>
</html>
I believe you have mastered it after reading the case in this article For more exciting methods, please pay attention to other related articles on the php Chinese website!
Recommended reading:
How to use Vue.js calculated properties and listeners
How to dynamically introduce JS files
The above is the detailed content of JS+CSS3 makes image binding mouse movement event amplification. For more information, please follow other related articles on the PHP Chinese website!
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