jQuery基础知识--Form基础(续)

下拉框应用

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <script type="text/javascript" src="../../js/jquery-2.1.3.js"></script>
    <title></title>
    <style type="text/css">
        * { margin:0; padding:0; }
        div.centent {
            float:left;
            text-align: center;
            margin: 10px;
        }
        span {
            display:block;
            margin:2px 2px;
            padding:4px 10px;
            background:#898989;
            cursor:pointer;
            font-size:12px;
            color:white;
        }
    </style>
</head>
<body>

<div class="centent">
    <select multiple id="select1" style="width: 100px; height: 160px;">
        <option value="1">选项1</option>
        <option value="2">选项2</option>
        <option value="3">选项3</option>
        <option value="4">选项4</option>
        <option value="5">选项5</option>
        <option value="6">选项6</option>
        <option value="7">选项7</option>
        <option value="8">选项8</option>
    </select>
    <div>
        <span id="add">选中添加到右边&gt;&gt;</span>
        <span id="add_all">全部添加到右边&gt;&gt;</span>
    </div>
</div>

<div class="centent">
    <select multiple id="select2" style="width: 100px; height: 160px;">

    </select>
    <div>
        <span id="remove">&lt;&lt;选中删除到左边</span>
        <span id="remove_all">&lt;&lt;全部删除到左边</span>
    </div>
</div>

</body>

<script type="text/javascript">
    $(function () {

        $("#add").click(function () {
//            //方法1
//            var $options = $(‘#select1 option:selected‘);
//            var $remove = $options.remove();
//            $remove.appendTo(‘#select2‘);
            //方法2
            var $options = $(‘#select1 option:selected‘);
            $options.appendTo(‘#select2‘);
        });

        $("#add_all").click(function () {
            var $options = $("#select1 option");
            $options.appendTo("#select2");
        });

        $("#select1").dblclick(function () {
            var $options = $(‘#select1 option:selected‘);
            $options.appendTo(‘#select2‘);
        });

        $("#remove").click(function () {
            var $options = $("#select2 option:selected");
            $options.appendTo("#select1");
        });

        $("#remove_all").click(function () {
            var $options = $("#select2 option");
            $options.appendTo("#select1");
        });

        $("#select2").dblclick(function () {
            var $options = $("#select2 option:selected");
            $options.appendTo("#select1");
        });
    })
</script>

</html>

表单验证

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <script type="text/javascript" src="../../js/jquery-2.1.3.js"></script>
    <title></title>
    <link href="css/style.css" rel="stylesheet" type="text/css" />
</head>
<body>

<form method="post" action="">
    <div class="int">
        <label for="username">用户名:</label>
        <input type="text" id="username" class="required" />
    </div>
    <div class="int">
        <label for="email">邮箱:</label>
        <input type="text" id="email" class="required" />
    </div>
    <div class="int">
        <label for="personinfo">个人资料:</label>
        <input type="text" id="personinfo" />
    </div>
    <div class="sub">
        <input type="submit" value="提交" id="send" /><input type="reset" id="res" />
    </div>
</form>

</body>

<script type="text/javascript">
    $(function () {
        //添加必填标识
        $("form :input.required").each(function () {
            $(this).parent().append("<strong class=‘high‘>*</strong>");
        });

        //当输入框失去焦点时进行验证
        $("form :input").blur(function () {
            var $parent = $(this).parent();
            $parent.find(".formtips").remove();
            //验证username
            if($(this).is("#username")) {
                if(this.value == "" || this.value.length < 6) {
                    var errorMsg = "请输入至少6位的用户名.";
                    $parent.append("<span class=‘formtips onError‘>" + errorMsg + "</span>")
                } else {
                    var okMsg = "输入正确";
                    $parent.append("<span class=‘formtips onSuccess‘>" + okMsg + "</span>")
                }
            }

            //验证email
            if($(this).is("#email")) {
                if(this.value == "" || (this.value != "" && !/[email protected]+\.[a-zA-Z]{2,4}$/.test(this.value) ) ) {
                    var errorMsg = "请输入正确格式的E-Mail地址";
                    $parent.append("<span class=‘formtips onError‘>" + errorMsg + "</span>")
                } else {
                    var okMsg = "输入正确";
                    $parent.append("<span class=‘formtips onSuccess‘>" + okMsg + "</span>")
                }
            }

        }).keyup(function () {//实时提醒
            $(this).triggerHandler("blur");
        }).focus(function () {
            $(this).triggerHandler("blur");
        });

        //提交--没有错误才能提交
        $("#send").click(function () {
            $("form .required:input").trigger("blur");
            var numErr = $("form .onError").length;
            if(numErr) {
                return false;
            }
            alert("注册成功!");
        });
    })
</script>

</html>