JavaScript之点击改变图片形状(transform的应用),供大家参考,具体内容如下
附上代码:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>transform的运用</title> <style type="text/css"> #box{ width: 50px; height: 50px; background-color: red; /*traslate 位移 rotate 旋转幅度 scale 放大幅度 skew倾斜*/ /*transform: translate(100px,200px) rotate(20deg) scale(2.0) skew(10deg);*/ } </style> </head> <body> <button id="btn">形变</button> <div id="box"></div> <script> window.onload = function (){ var btn = document.getElementById("btn"); var box = document.getElementById("box"); var index = 0; btn.onclick = function (){ index++; box.style.transform = `translate(${index*100}px,${index*50}px) rotate(${index*10}deg) scale(${index*1.3})`; } } </script> </body> </html>
实现效果图:
默认原始情况下:
点击形变后:
再次点击则会继续发生变化。
下边对transform的应用进行扩展,运用于时钟的走动:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>数字时钟案例</title> <style type="text/css"> *{ padding: 0; margin: 0; } #clock{ width: 600px; height: 600px; background: url("img/clock.jpg") no-repeat; position: relative; } #hour,#minute,#second{ position: absolute; width: 30px; height: 600px; left: 50%; margin-left: -15px; } #hour{ background: url("img/hour.png") no-repeat; } #minute{ background: url("img/minute.png") no-repeat; } #second{ background: url("img/second.png") no-repeat; } </style> </head> <body> <div id="clock"> <div id="hour"></div> <div id="minute"></div> <div id="second"></div> </div> <script type="text/javascript"> // 1.获取标签 var hour = document.getElementById("hour"); var minute = document.getElementById("minute"); var second = document.getElementById("second"); // 2.开启定时器 获取当前时间 setInterval(function (){ // 2.1获取当前的时间戳 var now = new Date(); // 2.2获取小时 分钟 秒 var s = now.getSeconds(); var m = now.getMinutes() + s/60; var h = now.getHours()%12 + m/60; // 2.3旋转 second.style.transform = `rotate(${s*6}deg)`; minute.style.transform = `rotate(${m*6}deg)`; hour.style.transform = `rotate(${h*30}deg)`; },10) </script> </body> </html>
附上效果图(现在是八点零一):
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持NICE源码。