js常用代码片段
//切换用户
$(".J-trigger").click(function(){
if (!$(this).is('.current')) {
$(this).addClass('current').siblings().removeClass('current');
}
});
//自动加载
var page=2;
var isBottom=true;
$(window).scroll(function(event) {
totalheight = parseFloat($(window).height()) + parseFloat($(window).scrollTop());
if ($(document).height() <= totalheight+300) {
event.preventDefault();
if (isBottom) {
isBottom=false;
var url=window.location;
$.ajax({
url:url,
type:'get',
data: {page: page,client:'ajax',limit:20},
dataType: 'json'
})
.done(function(data) { //请求成功
var count=data.count;
if (count<1) {
alert('没有更多数据了！');
};
var data=eval(data.data);
var html='';
for (var i = 0; i < count; i++) {
var jobDetailUrl="{:U('Job/detail')}";
var job=data[i];
jobDetailUrl=jobDetailUrl+"?id="+job.id;
//注意”‘会出错
html+='<li>
<div class="left type_wrap">
<i class="type'+job.category+'"></i>
</div> <a href="'+jobDetailUrl+'"
target="_blank"
class="left title hot">'+job.name+'</a>
<div class="left area">
<span><i class="icon-map-marker"></i> '+job.region+'</span>
</div> <div class="left visited">
<span><i class="icon-user"></i>'+job.wage+job.wage_type+'('+job.payoff+')</span>
</div> <div class="left date">
<i class="icon-time"></i>'+job.publish_time+'</div>
</li>'
};
$('.content_list_wrap').append(html);
if (!count) {
isBottom=false;
} else{
isBottom=true;
};
page++;
});
}
}
});
图片自由拖拽
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<meta http-equiv="Content-Type" Content="text/html; charset=UTF-8">
<head >
<title>图片缩放和固定div层拖动</title>
<style type="text/css">
#picDiv
{
margin:8px 8px 4px 0;
border:1px solid #666666;
padding:0;
width:120px;
height:120px;
float:left;
overflow:hidden;
position:relative;
cursor:move;
}
.dragAble
{
position: absolute;
cursor: move;
}
</style>
<script language="javascript" type="text/javascript">
//图片放大和缩小（兼容IE和火狐，谷歌）
function ImageChange(args) {
var oImg = document.getElementById("pic");
if (args) {
oImg.width = oImg.width * 1.2;
oImg.height = oImg.height * 1.2;
// oImg.style.zoom = parseInt(oImg.style.zoom) + (args ? +20 : -20) + '%';
}
else {
oImg.width = oImg.width / 1.2;
oImg.height = oImg.height / 1.2;
}
}
//获取div的四个顶点坐标
function getDivPosition()
{
var odiv=document.getElementById('picDiv');
// alert(odiv.getBoundingClientRect().left);
// alert(odiv.getBoundingClientRect().top);
var xLeft,xRigh,yTop,yBottom;
return {
xLeft:odiv.getBoundingClientRect().left,
xRigh:odiv.getBoundingClientRect().left+130,
yTop:odiv.getBoundingClientRect().top,
yBottom:odiv.getBoundingClientRect().top+130
};
}
//获取鼠标坐标
function mousePos(e)
{
var x,y;
var e = e||window.event;
return {
x:e.clientX+document.body.scrollLeft+document.documentElement.scrollLeft,
y:e.clientY+document.body.scrollTop+document.documentElement.scrollTop
};
};
//在固定div层拖动图片
var ie = document.all;
var nn6 = document.getElementById && !document.all;
var isdrag = false;
var y, x;
var oDragObj;
//鼠标移动
function moveMouse(e) {
//鼠标的坐标
mousePos(e).x ;
mousePos(e).y ;
//div的四个顶点坐标
getDivPosition().xLeft
getDivPosition().xRigh
getDivPosition().yTop
getDivPosition().yBottom
if(isdrag && mousePos(e).x > getDivPosition().xLeft && mousePos(e).x < getDivPosition().xRigh && mousePos(e).y >getDivPosition().yTop && mousePos(e).y< getDivPosition().yBottom )
{
oDragObj.style.top = (nn6 ? nTY + e.clientY - y : nTY + event.clientY - y) + "px";
oDragObj.style.left = (nn6 ? nTX + e.clientX - x : nTX + event.clientX - x) + "px";
return false;
}
}
//鼠标按下才初始化
function initDrag(e) {
var oDragHandle = nn6 ? e.target : event.srcElement;
var topElement = "HTML";
while (oDragHandle.tagName != topElement && oDragHandle.className != "dragAble") {
oDragHandle = nn6 ? oDragHandle.parentNode : oDragHandle.parentElement;
}
if (oDragHandle.className == "dragAble") {
isdrag = true;
oDragObj = oDragHandle;
nTY = parseInt(oDragObj.style.top + 0);
y = nn6 ? e.clientY : event.clientY;
nTX = parseInt(oDragObj.style.left + 0);
x = nn6 ? e.clientX : event.clientX;
document.onmousemove = moveMouse;
return false;
}
}
document.onmousedown = initDrag;
document.onmouseup = new Function("isdrag=false");
</script>
</head>
<body>
<div id="picDiv" >
<img id="pic" class="dragAble" alt="头像" src="http://t10.baidu.com/it/u=3975979344,3173713607&fm=58" />
<br />
</div>
<input id="btn1" type="button" value="放大" onclick="ImageChange(true)" />
<input id="btn2" type="button" value="缩小" onclick="ImageChange(false)" />
<!-- <input id="btn3" type="button" value="div的坐标" onclick="getDivPosition()" /> -->
</body>
</html>