jQuery案例

来源：互联网发布：java基础环境搭建编辑：程序博客网时间：2024/05/19 06:14

<title></title>
<style>
td {
text-align: center;
}
</style>
<script type="text/javascript" src="../jQuery/jquery-2.1.1.js" ></script>
<script>
$(function() {
var arr = [
["东城","西城","崇文","宣武","朝阳","丰台","石景山","海淀","门头沟","房山","通州","顺义","昌平","大兴","平谷","怀柔","密云","延庆" ]
,
["黄浦","卢湾","徐汇","长宁","静安","普陀","闸北","虹口","杨浦","闵行","宝山","嘉定","浦东","金山","松江","青浦","南汇","奉贤","崇明"]
,
["和平","东丽","河东","西青","河西","津南","南开","北辰","河北","武清","红挢","塘沽","汉沽","大港","宁河","静海","宝坻","蓟县" ]
,
["万州","涪陵","渝中","大渡口","江北","沙坪坝","九龙坡","南岸","北碚","万盛","双挢","渝北","巴南","黔江","长寿","綦江","潼南","铜梁","大足","荣昌","壁山","梁平","城口","丰都","垫江","武隆","忠县","开县","云阳","奉节","巫山","巫溪","石柱","秀山","酉阳","彭水","江津","合川","永川"]
];
var flag1 = false;
var flag2 = false;
var flag3 = false;
var flag4 = false;
//获取元素
var $name = $("#name");
var $pwd = $("#pwd");
var $age = $("#age");
var $city = $("#city");

$name.blur(function() {
if($name.val() == "") {
alert("请输入用户名");
flag1 = false;
} else {
flag1 = true;
}
});

$pwd.blur(function() {
var $pl = $pwd.val().length;
if($pl > 4 && $pl < 16) {
flag2 = true;
} else {
alert("长度在4-16位之间");
flag2 = false;
}
});

$age.blur(function() {
if($age.val() < 1 || $age.val() > 300) {
alert("请输入正确的年龄");
flag3 = false;
} else {
flag3 = true;
}
});

$city.change(function(){
$("#city2 option").remove();
var ind = $(this).val();
alert(ind);
for(c in arr[ind]){
var $c2 = $("#city2");
var cs = $("<option>"+arr[ind][c]+"</option>");
$c2.append(cs);
}
});

//提交按钮点击事件
$("#tj").click(function() {

if(flag1 && flag2 && flag3){
var $nameV = $("#name").val();
var $pwdV = $("#pwd").val();
var $ageV = $("#age").val();
var $sexV = $("input[name='sex']:checked").val();
var $cityV = $("#city option:selected").html();
var $city2V = $("#city2 option:selected").html();
var $data = $("#data");
var $a = $("<tr><td><input type='checkbox'></td><td>"+$nameV+"</td><td>"+$pwdV+"</td><td>"+$ageV+"</td><td>"+$sexV+"</td><td>"+$cityV+"-"+$city2V+"</td></tr>");
$data.append($a);

}else{
alert("请按要求输入信息");
}
});

});
</script>

<script>
//页面加载完成
$(function(){
//选中全选
$("#all").click(function(){
//判断状态
var fl = $(this).prop("checked");
if(fl){
//全选
var $ch = $(":checkbox");
$ch.each(function(index, element) {
$ch[index].checked=true;
});
}else{
//全不选
var $ch = $(":checkbox");
$ch.each(function(index, element) {
$ch[index].checked=false;
});
}
});
//批量删除，点击删除，删除选中的元素
$("#del").click(function(){
//data表格下有是checked且没有id属性的都删除
$("#data :checked").not("[id]").parent().parent().remove(); //移除所有被选中的input元素

})

});
</script>
</head>
<body>
<center>
<h2>用户注册</h2>
<table border="1px" cellpadding="10px" cellspacing="0px">
<tr>
<td>用户名</td>
<td><input type="text" placeholder="用户名不能为空" id="name" /></td>
</tr>
</tr>
<td>密　码</td>
<td><input type="password" placeholder="长度在4-16位之间" id="pwd" /></td>
</tr>
</tr>
<td>年　龄</td>
<td><input type="number" placeholder="年龄必须是数字" id="age" /></td>
</tr>
</tr>
<td>性　别</td>
<td><input type="radio" value="男" name="sex" checked="checked"/>男
<input type="radio" value="女" name="sex" />女</td>
</tr>
<tr>
<td>住　址</td>
<td>省
<select id="city">
<option value=0>北京</option>
<option value=1>上海</option>
<option value=2>天津</option>
<option value=3>重庆</option>
</select>
市
<select id="city2">
<option>东城区</option>
</section>
</td>
</tr>
<tr>
<td colspan="2"><button id="tj">提交</button></td>
</tr>
</table>
<button id="del">批量删除</button>
<table border="1px" cellpadding="10px" cellspacing="0px" id="data">
<tr>
<td><input type="checkbox" id="all"></td>
<td>用户名</td>
<td>密　码</td>
<td>年　龄</td>
<td>性　别</td>
<td>住　址</td>
</tr>

</table>
</center>

</body>

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