![js中有["1","2","3","4"]这样一个string，怎么把它变成array](/aiimages/js%E4%B8%AD%E6%9C%89%5B%26quot%3B1%26quot%3B%2C%26quot%3B2%26quot%3B%2C%26quot%3B3%26quot%3B%2C%26quot%3B4%26quot%3B%5D%E8%BF%99%E6%A0%B7%E4%B8%80%E4%B8%AAstring%EF%BC%8C%E6%80%8E%E4%B9%88%E6%8A%8A%E5%AE%83%E5%8F%98%E6%88%90array.png)
如<meta http-equiv="Content-Type" content="text/htmlcharset=gb2312" />
1、<html>
2、<head>
3、<meta http-equiv="Content-Type" content="text/htmlcharset=gb2312" />
4、<title>JS教程:鼠标悬停时显示文字或显示图片</title>
5、<script language="javascript">
6、functionshowPic(sUrl{varx,yx=event.clientXy=event.clientYdocument.getElementById("Layer1").style.left=xdocument.getElementById("Layer1").style.top=ydocument.getElementById("Layer1").innerHTML = "<img src=\"" + sUrl + "\">" document.g
7、function hiddenPic(){ document.getElementById("Layer1").innerHTML = ""document.getElementById("Layer1").style.display = "none"}
8、</script>
9、</head>
10、<body>
11、<div id="Layer1" style="display:noneposition:absolutez-index:1"></div>
12、<img src="#########" onmouseout="hiddenPic()"
13、onmousemove="showPic(this.src)" title="wowowowo" /> //此行title实现悬停时显示文字onmousemove实现显示图片
14、<p></p>
15、</body>
16、</html>
效果你自己看吧，代码拷贝了就能用，记得引用jq文件给你写了大概的功能，链接什么的，你自己加上就行，懒得找图片，直接用的背景色举例吧
<html>
<head>
<meta http-equiv="Content-Type" content="text/htmlcharset=utf-8" />
<title>测试</title>
<script src="jquery.min.js"></script>
<style>
.bg{margin:20px autowidth:400pxheight:400px}
.half{width:50%height:50%float:leftcolor:white}
.half ul{display:none}
.blue{background:blue}
.green{background:green}
.red{background:red}
.orange{background:orange}
</style>
<script type="text/javascript">
$(function(){
$(".half").each(function(index,element){
$(this).hover(function(){
$(this).children().show()
},function(){
$(this).children().hide()
})
})
})
</script>
</head>
<body>
<div class='bg'>
<div class='half blue'>
<ul>
<li><a href=''>测试测试连接1</a></li>
<li>测试测试连接2</li>
</ul>
</div>
<div class='half green'>
<ul>
<li>测试测试连接1</li>
<li>测试测试连接2</li>
</ul>
</div>
<div class='half red'>
<ul>
<li>测试测试连接1</li>
<li>测试测试连接2</li>
</ul>
</div>
<div class='half orange'>
<ul>
<li>测试测试连接1</li>
<li>测试测试连接2</li>
</ul>
</div>
</div>
</body>
</html>
<!DOCTYPE html><html>
<head>
<meta http-equiv="Content-Type" content="text/html charset=UTF-8">
<title>
RunJS 演示代码
</title>
<style>
#content{
text-overflow: ellipsis
overflow: hidden
white-space: nowrap
width:200px
}
</style>
<script>
onload = function(){
content.onmouseover = function(){
this.title = this.innerHTML
}
}
</script>
</head>
<body>
<div id='content'>
js 文字超出长度用省略号代替,鼠标悬停并以悬浮框显示
js 文字超出长度用省略号代替,鼠标悬停并以悬浮框显示
js 文字超出长度用省略号代替,鼠标悬停并以悬浮框显示
js 文字超出长度用省略号代替,鼠标悬停并以悬浮框显示
</div>
</body>
</html>
