标签：char class 就是 练手 替换 png onclick pre size
1、做一个小图标在界面中通过按钮可以变大 变小 变色 变圆
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>改变图片</title>
<style>
.box{//设置显示的盒子的属性
width:100px;
height:100px;
background-color: red;
}
button{//设置你的按钮的属性
width:20px;
height:20px;
font-size: 5px;
/*background-color: green;*/
}
</style>
</head>
<body>
<button type="button" id="big">变大</button>
<button type="button" id="small">变小</button>
<button type="button" id="changeColor">变色</button>
<button type="button" id="circle">变圆</button>
<div class="box" id="hezi"></div>
<script type="text/javascript">
window.onload = function(){
function $(id){ //把获取id封装成一个函数
return document.getElementById(id);
}
$(‘big‘).onclick = function(){//id为big的那个按钮对盒子进行操作
$(‘hezi‘).style.width = ‘300px‘;
$(‘hezi‘).style.height = ‘400px‘;
}
$(‘small‘).onclick = function(){
$(‘hezi‘).style.width = ‘50px‘;
$(‘hezi‘).style.height = ‘50px‘;
}
$(‘changeColor‘).onclick = function(){
// $(‘hezi‘).style.color = ‘yellow‘; //错误的写法 你上面定义的是background这也应该是background
$(‘hezi‘).style.backgroundColor = ‘yellow‘;
}
$(‘circle‘).onclick = function(){
$(‘hezi‘).style.borderRadius = ‘50%‘; //变圆就是设置成50%
}
}
</script>
</body>
</html>
2、当你的鼠标移动到一个图片上的时候会替换成另外一个图片 当移走的时候又会变成另外一个
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>替换界面图片</title>
</head>
<body>
<div class="box">
<img src="./2_01.png" alt="照相机" id="ca" title="哈哈哈">
</div>
<script>
window.onload = function(){
var oImg = document.getElementById(‘ca‘);
oImg.onmouseover = function(){
oImg.src = ‘./2_02.png‘;
var myDate = new Date();
// console.log(myDate.toLocaleString());
// oImg.title = myDate.toLocaleString();
console.log(myDate.toLocaleString());
oImg.title = myDate.toLocaleString();
}
oImg.onmouseout = function(){
oImg.src = ‘./2_01.png‘;
}
}
</script>
</body>
</html>
标签：char class 就是 练手 替换 png onclick pre size
原文地址：https://www.cnblogs.com/askzyl/p/9111874.html
