前端开发 浏览器差异 |
跨浏览器的web前端开发 |
前端开发哪个浏览器 |
html 代码
<!DOCTYPE html>
<html lang=”en”>
<head>
<meta charset=”UTF-8″ />
<title>可拖拽特效</title>
<style type=”text/css”>
* {
margin: 0;
padding: 0;
}
.header {
width: 100%;
height: 30px;
background: #036663;
line-height: 30px;
color: #fff;
text-indent: 30px;
}
#demo {
width: 400px;
height: 300px;
border: solid 5px #eee;
box-shadow: 0 0 5px #666;
position: absolute;
top: 40%;
left: 40%;
}
#innerht {
height: 25px;
background: #036663;
border-bottom: solid 1px #369;
color: #fff;
text-indent: 10px;
cursor: move;
}
#close {
float: right;
cursor: pointer;
}
</style>
</head>
<body>
<div class=”header”>注册信息</div>
<div id=”demo”>
<div id=”innerht”>
注册信息(可拖拽)<span id=”close”>【关闭】</span>
</div>
<div class=”write”></div>
</div>
</body>
<script type=”text/javascript”>
;(function(window) {
function $(id) {
return document.getElementById(id)
}
// 获取对象
var innerht = $(‘innerht’),
demo = $(‘demo’),
close = $(‘close’)
// 给innerht绑定鼠标事件
innerht.onmousedown = function(event) {
// 解决event兼容问题
var event = event || window.event
// 获取鼠标在页面上坐标
var pageX =
event.pageX ||
event.clientX + document.documentElement.scrollLeft
var pageY =
event.pageY ||
event.clientY + document.documentElement.scrollTop
// 获取鼠标在innerht内部的坐标
var innerX = pageX – demo.offsetLeft
var innerY = pageY – demo.offsetTop
// 给document绑定鼠标移动事件,防止鼠标快速滑动时滑出innerht
document.onmousemove = function(event) {
var event = event || window.event
// 获取鼠标移动时的坐标
var moveX =
event.pageX ||
event.clientX + document.documentElement.scrollLeft
var moveY =
event.pageY ||
event.clientY + document.documentElement.scrollTop
// 鼠标移动时demo的位置坐标
var demoX = moveX – innerX
var demoY = moveY – innerY
// 鼠标移动时demo的位置坐标
demo.style.left = demoX + ‘px’
demo.style.top = demoY + ‘px’
//清除选中文字
window.getSelection
? window.getSelection().removeAllRanges()
: document.selection.empty()
}
}
// 鼠标抬起清除拖拽效果
document.onmouseup = function() {
document.onmousemove = null
}
// 点击关闭按钮关闭跟随框
close.onclick = function() {
this.parentNode.parentNode.style.display = ‘none’
}
})(window)
</script>
</html>
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