js正则表达式进行格式校验

Posted 2020-07-08 Love满天星

今天做了个js正则表达式的练习，利用正则表达式进行注册信息格式验证，注册信息界面如下：

格式要求：

1、学号项不能为空，必须为纯数字，不能与数据库中的重复，正则表达式/^\d+$/g；

2、姓名项不能为空；

3、密码不能为空且无空格判断空格text.split(" ").length != 1，安全等级分为3个等级，若全为字母或者数字为1级，正则表达式(text.search(/^[a-zA-Z]+$/g) != -1) || (text.search(/^[0-9]+$/g) != -1，若只有有标点符号或标点与字母或者数字同时出现则为2级，正则表达式text.search(/^[a-zA-Z0-9]+$/g) != -1，若字母、数字和标点同时出现则为3级；

4、确认密码项要求与密码项填写的密码一致；

5、年级项不能为空，且格式必须为第20**级，正则表达式text.search(/^\u7B2C{1}20\d+\u7EA7{1}$/) != -1；

6、专业项不能为空，且只能以汉字开头，结尾可以为汉字或者字母正则表达式text.search(/^[\u4e00-\u9fa5]+[a-zA-Z]*$/g) != -1；

7、班级项不能为空且格式为专业+班级即类似电信1001格，正则表达式text.search(/^[\u4e00-\u9fa5]+\d{4}$/) != -1；

8、手机项可以为空，格式为(+86)1*********正则表达式text.search(/^(\+86)?1\d{10}$/) != -1。

运行效果：

正确格式输入后运行效果：

html代码：

<!--register-->
<div style="display:block">
<div>
<span style=" font-weight: bold;"><label>注册</label></span>
</div>
<div>
<span class="input_span"><label class="text_label">学号</label><label class="text_label" style="color:Red;">*</label></span>
<span class="input_span"><input type="text" id="studentNum_input" onblur="checkRegisterInfo(1)"/></span>
<span><label id="studentNumCheck_label"></label></span>
</div>
<div>
<span class="input_span"><label class="text_label">姓名</label><label class="text_label" style="color:Red;">*</label></span>
<span class="input_span"><input type="text" id="name_input" onblur="checkRegisterInfo(2)"/></span>
<span><label id="nameCheck_label"></label></span>
</div>
<div>
<span class="input_span"><label class="text_label">密码</label><label class="text_label" style="color:Red;">*</label></span>
<span class="input_span"><input type="password" id="passwd_rigester_input" onblur="checkRegisterInfo(3)"/></span>
<span><label id="passwdCheck_label"></label></span>
</div>
<div>
<span class="input_span" id="confirmpasswd_span"><label>确认密码</label><label class="text_label" style="color:Red;"> *</label></span>
<span class="input_span"><input type="password" id="confirmPasswd_input" onblur="checkRegisterInfo(4)"/></span>
<span><label id="confirmPasswdCheck_label"></label></span>
</div>
<div>
<span class="input_span"><label class="text_label">年级</label><label class="text_label" style="color:Red;">*</label></span>
<span class="input_span"><input type="text" id="grade_input" onblur="checkRegisterInfo(5)"/></span>
<span><label id="gradeCheck_label">格式:第20**级</label></span>
</div>
<div>
<span class="input_span"><label class="text_label">专业</label><label class="text_label" style="color:Red;">*</label></span>
<span class="input_span"><input type="text" id="major_input" onblur="checkRegisterInfo(6)"/></span>
<span><label id="majorCheck_label"></label></span>
</div>
<div>
<span class="input_span"><label class="text_label">班级</label><label class="text_label" style="color:Red;">*</label></span>
<span class="input_span"><input type="text" id="class_input" onblur="checkRegisterInfo(7)"/></span>
<span><label id="classCheck_label">格式:电信1001</label></span>
</div>
<div>
<span class="input_span" id="phone_span"><label class="text_label">手机</label></span>
<span class="input_span"><input type="text" id="phone_input" onblur="checkRegisterInfo(8)"/></span>
<span><label id="phoneCheck_label"></label></span>
</div>
<div class="button_div"><span><input id="register_button" type="button" onclick="summitRegisterInfo()" value="用户注册"/></span></div>
</div>
<!--end register-->
</div>

JS验证源代码：

/*
* 功能：    验证注册信息是否合法，在每次<input>控件失去聚焦时调用
* 参数：    num 控件编号，指示是哪个控件触发了该函数
* 返回值：  如果全部合法返回true,否则给予响应的错误提示并返回false
* 创建人：  Lixam
* 创建时间：2013-9-14
* 修改人：  
* 修改时间：
*/
function checkRegisterInfo(num) {
    var text;
    switch (num) {
        //当点击提交按钮时校验必填项是否为空,防止直接点击提交按钮
        case 0:
            if (document.getElementById("studentNum_input").value == ""
                || document.getElementById("name_input").value == ""
                || document.getElementById("passwd_rigester_input").value == ""
                || document.getElementById("confirmPasswd_input").value == ""
                || document.getElementById("grade_input").value == ""
                || document.getElementById("major_input").value == ""
                || document.getElementById("class_input").value == "") {
                alert("注册失败,打*号的项不能为空!");
                return false;
            }
            else
                return true;
            break;
        //验证学号
        case 1:
            text = document.getElementById("studentNum_input").value;
            var check = document.getElementById("studentNumCheck_label");
            //验证是否为空
            if (text == "") {
                check.style.color = "red";
                check.innerText = "学号项不能为空!";
            }
            //验证格式
            else if (text.search(/^\d+$/g) == -1) {
                check.style.color = "red";
                check.innerText = "学号应为纯数字!";
            }
            else {
                //验证学号的唯一性
                var xmlHttp = createXmlHttp();
                xmlHttp.open("get", "Ajax.aspx?met=rigesterInfo&data=" + escape(text), true);
                xmlHttp.send(null);

                xmlHttp.onreadystatechange = function () {
                    if (xmlHttp.readyState == 4 & xmlHttp.status == 200) {
                        //服务器返回true表示该学号可用
                        if (xmlHttp.responseText) {
                            check.style.color = "yellow";
                            check.innerText = "恭喜您,该学号可用!";
                        }
                        else {
                            check.style.color = "red";
                            check.innerText = "您输入的学号已存在，请重新输入!";
                        }
                    }
                }
            }
            break;
        //验证姓名
        case 2:
            text = document.getElementById("name_input").value;
            var check = document.getElementById("nameCheck_label");
            if (text == "") {
                check.style.color = "red";
                check.innerText = "名字项不能为空!";
            }
            else {
                check.style.color = "yellow";
                check.innerText = "名字项填写正确!";
            }
            break;
        //验证密码
        case 3:
            text = document.getElementById("passwd_rigester_input").value;
            var check = document.getElementById("passwdCheck_label");

            if (text == "") {
                check.style.color = "red";
                check.innerText = "密码项不能为空!";
            }
            //密码中只能有数字、字母和标点符号
            else if (text.split(" ").length != 1) {
                check.style.color = "red";
                check.innerText = "密码中不能出现空格!";
            }
            else {
                //验证密码的安全级数,纯数字或纯字母或纯标点为1级，字母+数字为2级，字母或数字任意一个+标点为3级

                if ((text.search(/^[a-zA-Z]+$/g) != -1) || (text.search(/^[0-9]+$/g) != -1)) {
                    check.style.color = "yellow";
                    check.innerText = "密码安全级别为1级!";
                }
                else if (text.search(/^[a-zA-Z0-9]+$/g) != -1) {
                    check.style.color = "yellow";
                    check.innerText = "密码安全级别为2级!";    
                }
                else {
                    check.style.color = "yellow";
                    check.innerText = "密码安全级别为3级!";
                }
            }
            break;
        //验证确认密码
        case 4:
            text = document.getElementById("confirmPasswd_input").value;
            var check = document.getElementById("confirmPasswdCheck_label");
            if (text != document.getElementById("passwd_rigester_input").value) {
                check.style.color = "red";
                check.innerText = "两次密码输入不一致!";
            }
            else {
                check.style.color = "yellow";
                check.innerText = "密码确认正确!";
            }
            break;
        //验证年级
        case 5:
            text = document.getElementById("grade_input").value;
            var check = document.getElementById("gradeCheck_label");
            if (text == "") {
                check.style.color = "red";
                check.innerText = "年级项不能为空!";
            }
            else if (text.search(/^\u7B2C{1}20\d+\u7EA7{1}$/) != -1) {
                check.style.color = "yellow";
                check.innerText = "年级项填写正确!";
            }
            else {
                check.style.color = "red";
                check.innerText = "年级项格式为:第20**级!";
            }
            break;
        //验证专业 
        case 6:
            text = document.getElementById("major_input").value;
            var check = document.getElementById("majorCheck_label");
            if (text == "") {
                check.style.color = "red";
                check.innerText = "专业项不能为空!";
            }
            else if (text.search(/^[\u4e00-\u9fa5]+[a-zA-Z]*$/g) != -1) {
                check.style.color = "yellow";
                check.innerText = "专业项填写正确!";
            }
            else {
                check.style.color = "red";
                check.innerText = "专业项填写不正确!";
            }
            break;
        //验证班级
        case 7:
            text = document.getElementById("class_input").value;
            var check = document.getElementById("classCheck_label");
            if (text == "") {
                check.style.color = "red";
                check.innerText = "班级项不能为空!";
            }
            else if (text.search(/^[\u4e00-\u9fa5]+\d{4}$/) != -1) {
                check.style.color = "yellow";
                check.innerText = "班级项填写正确!";
            }
            else {
                check.style.color = "red";
                check.innerText = "班级项格式为:电信1001!";
            }
            break;
        //验证电话
        case 8:
            text = document.getElementById("phone_input").value;
            var check = document.getElementById("phoneCheck_label");
            if (text == "") {
                break;
            }
            else if (text.search(/^(\+86)?1\d{10}$/) != -1) {
                check.style.color = "yellow";
                check.innerText = "手机项填写正确!";
            }
            else {
                check.style.color = "red";
                check.innerText = "手机项格式错误!";
            }
            break;
    }
}