关于ajax用户名验证和jquery实现简单表单验证

首先来说用户名验证:

前台:

<tr>
<td class="tableleft">教师编号</td>
<td><input type="text" name="tno" id="tno" required="required"/><div class="status" style="color:red"></div></td>
</tr>

js部分:

var flag = true;
$("#tno").blur(function(){
var tno = $("#tno").val();
$.ajax({
url:"admin/checktno.action",
data:{tno:tno},
type:"post",
datatype:"text",
success:function(data){
if(data=="yes"){
$(".status").html("");
flag=true;
}else{
$(".status").html("教工号已存在!");
flag=false;
}
},
errot:function(){
alert("error!");
}
});
}); $("#submitbutton").click(function(){
if(flag){
$("#form").submit();
}else{
alert("请先满足条件!");
}
});

后台:

@RequestMapping("admin/checktno")
@ResponseBody
public String checkTno(Long tno) {
Teacher tea = teacherService.getTea(tno);
if(tea == null) {
return "yes";
}
return "no";
}

接下来简单用jquery的jquery.validate插件

下载该插件,地址:https://jqueryvalidation.org/

导入:

<script type="text/javascript" src="Js/jquery.validate.min.js"></script>

接下来就是验证部分的js:

$("#form").validate({
onsubmit:true,// 是否在提交时验证
rules: {
tno: {
required: true,
minlength: 1
},
password: {
required: true,
minlength: 3
} ,
tname:{
required: true
}
},
messages: {
tno: {
required: "请输入教工号",
minlength: "教工号至少为1位"
},
password: {
required: "请输入密码",
minlength: "密码长度最少为3位"
},
tname:{
required:"请输入姓名"
}
}
})
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