验证码插件 vercode.js

第1代图片验证码 - 字母数字型

第2代滑动验证码 - 图片截取型

第3代验证码 - 选图型

 vercode.js 结合了上面的情况下新研发的一种验证码。

vercode.js

var vercode = new Object();
vercode.apiPath = "";
vercode.userId = "";
vercode.generateVerifyImage = function () {
    try {
        var url = vercode.apiPath;
        var userId = $(vercode.userId).val();
        $.ajax({
            url: url,
            type: 'post',
            data: { userId: userId },
            dataType: 'json',
            async: false,
            success: function (res) {
                if (res.code == 0) {
                    document.getElementById('verImage').src = "data:image/jepg;base64," + res.data;
                }
            },
            error: function () {
                console.log('Error occurred while opening the image file.');
            }
        });
    } catch (e) {

    } finally {
        document.getElementById('verset').style.display = 'block';
        document.getElementById('verset').style.top = ($('#vercode').offset().top + $('#vercode').height())+"px";
        document.getElementById('verset').style.left = ($('#vercode').offset().left)+"px";
        document.getElementById('code').innerText = '';
    }
}
vercode.appendVer = function (v) {
    var codeLength = 4;//   验证码长度
    if (document.getElementById('code').innerText.length == codeLength) {
        document.getElementById('verset').style.display = 'none';
        return;
    }
    document.getElementById('code').innerText += v.innerText;
};
vercode.Init = function (apiPath, userId) {
    let arr = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
    //arr.sort(() => Math.random() - 0.5);    //  如果希望键盘顺序显示，注释改行
    arr.splice(9, 0, 99);
    arr.push(99);

    var template = "";
    for (var i = 0; i < 12; i++) {
        if (i == 9 ) {
            template += '<li onclick="vercode.generateVerifyImage()">重置</li>';
        }
        else if (i == 11) {
            template += '<li onclick="document.getElementById(\'verset\').style.display = \'none\'">确认</li>';
        }
        else {
            template += '<li onclick="vercode.appendVer(this)">' + arr[i] + '</li>';
        }
    }
    $(".verset ul").html(template);
    $("#verImage").click(function () {
        vercode.generateVerifyImage();
    })
    $("#verImage").attr("title", "点击后刷新验证码");
    vercode.apiPath = apiPath;
    vercode.userId = userId;
};

vercode.css

.vercode {
    width: 330px;
    margin:10px 0px;
}

    .vercode .code {
        display: inline-block;
        width: 45%;
        margin-right: 5px;
        font-family: 'Arial Unicode MS';
        font: 20px/38px bold;
        line-height: 38px;
        height: 38px;
        text-align: center;
        float: left;
        border-radius: 5px;
        background-color: #f8f4f4;
        text-shadow: 2px 2px 2px #52c574;
    }

            .vercode .verimg {
                display: inline-block;
                width: 45%;
                margin-left: 5px;
                line-height: 38px;
                height: 38px;
                text-align: center;
                cursor: pointer;
            }

                .vercode .verimg img {
                    display: inline-block;
                    width: 100%;
                    height: 38px;
                    vertical-align: middle;
                    line-height: 38px;
                    text-align: center;
                    cursor: pointer;
                }

.verset {
    width: 330px;
    padding: 0px;
    text-align: left;
    height: 100px;
    display: none;
    margin: 10px;
    height: 120px;
    position: fixed;
    top: 0px;
    left: 0px;
    z-index: 9999;
}

        .verset ul {
            width: 76%;
            height: 126px;
            line-height: 28px;
            margin: 0px;
            clear: both;
            padding: 5px 0px;
            padding-left: 5px;
        }

            .verset ul li {
                float: left;
                list-style: none;
                width: 31%;
                background-color: #fff; /*  修改按钮背景色   */
                text-align: center;
                border: 1px solid #666;
                color: #666; /*  修改按钮字体色   */
                border-radius: 5px;
                cursor: pointer;
                margin:1px;
            }

　　login.html 登录示例

<li>
                    <em></em>
                    <input type="text" id="userId" tabindex="1" placeholder="请输入用户名" class="longcode" />
                    <label id="imgUid" class="error_msg"></label>
                </li>
                <li>
                    <em class="code"></em>
                    <input type="password" id="pwd" placeholder="请输入密码" class="longcode on" tabindex="2" />
                    <label id="imgPwd" class="error_msg"></label>
                </li>


                <li>
                    <div class="vercode" id="vercode">
                        <div class="code" id="code"></div>
                        <div class="verimg">
                            <img src="" id="verImage" />
                        </div>
                    </div>

                </li>
...

 <div class="verset" id="verset">
            <ul></ul>
        </div>

　　login.html 登录访问服务器javascript方法

<script>
        function syslogin() {
            $.post('/Login/Verify', { userId: $("#userId").val(), pwd: $("#pwd").val(), clientCode: $("#code").text() }, function (res) {
                if (res.code != 0) {
                    document.getElementById('lblMessage').innerText = res.msg;
                    document.getElementById('lblMessage').style.color = "red";
                }
                else {
                    document.getElementById('lblMessage').innerText = res.msg;
                    document.getElementById('lblMessage').style.color = "green";
                    //setTimeout(function () {
                    //    location.href = '/Basic/IcsonFrame_DBC_Table.aspx';
                    /