1.把对象转换为字符串
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<script src="../Scripts/jquery-1.9.1.js"></script>
<script type="text/javascript">
$(function () {
$("button").click(function () {
var option = {
user: "wangqiang",
pass:"123456789"
}
var str = jQuery.param(option);
$("#result").text(str);
})
})
</script>
<title></title>
</head>
<body>
<button>定义序列化字符串</button>
<div id="result"></div>
</body>
</html>
2.处理字符串（去除空格）
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<script src="../Scripts/jquery-1.9.1.js"></script>
<script type="text/javascript">
$(function () {
$("button").click(function () {
var str = " ";
alert(str.length);
str = jQuery.trim(str)
alert(str.length);
}) })
</script>
<title></title>
</head>
<body>
<div> <button> 修剪字符串</button>
</div>
</body>
</html>
3.对数组和集合进行迭代
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<script src="../Scripts/jquery-1.9.1.js"></script>
<script type="text/javascript">
$(function () {
var a = [
{ width: 400 },
{ height: 300 }
];
jQuery.each(a,function(name,value)
{
if (name > 0) return false;//只进行一次循环即退出 需要退出each循环，返回一个false就可以了
alert(name+="="+value);
}) })
</script>
<title></title>
</head>
<body> </body>
</html>
4.对数组进行筛选
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<script src="../Scripts/jquery-1.9.1.js"></script>
<script type="text/javascript">
//筛选数组
var arr = [1, 2, 3, 4, 5, 6, 7, 8, 9];
arr = jQuery.grep(arr, function (value, index) {
return value >= 5;
})
alert(arr);
//转换数组
var arr = [1, 2, 3, 4, 5, 6, 7, 8, 9];
arr = jQuery.map(arr, function (elem) {
return elem * 2 > 5 ? elem * 2 : null;
})
alert(arr);
//合并数组
var arr1 = [1, 2, 3, ["a", "b", "c"]];
var arr2 = [4, 5, 6, [7, 8, 9]];
arr3 = jQuery.merge(arr1, arr2);
alert(arr1);
alert(arr1.length);//
alert(arr3);
alert(arr3.length);
</script>
<title></title>
</head>
<body> </body>
</html>
5.检测用户代理
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<script src="../Scripts/jquery-1.4.1.js"></script>
<script type="text/javascript">
$(function () {
var brower = $.browser;
var temp = "";
for (var name in brower)
{
if (brower[name] == true) {
temp += name + "=" + brower[name] + "当前浏览器是：" + name;
}
else { temp += name + "=" + brower[name];
}
}
$("div").html(temp);
})
</script>
<title></title>
</head>
<body>
<div></div>
</body>
</html>
6.判断是否是数组类型
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<script src="../Scripts/jquery-1.9.1.js"></script>
<script type="text/javascript">
$(function () {
var a = [
{width:400},
{height:300}
];
if (jQuery.isArray(a))
alert("变量a是数组"); })
</script>
<title></title>
</head>
<body> </body>
</html>
7.生成数组
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<script src="../Scripts/jquery-1.9.1.js"></script>
<script type="text/javascript">
var arr = jQuery.makeArray($("li").val);
alert(arr);
$("ul").html(arr.reverse()); </script>
<title></title>
<style type="text/css"></style>
</head>
<body>
<ul>
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
<li>6</li>
<li>7</li>
<li>8</li>
</ul>
</body>
</html>