function checkFrom(){
var username=$('#username').val();
alert(username);
var pwd=$('#pwd').val();
if(username==null || username==""){
$('#codeInfo').html("请输入用户名");
$('#username').focus();
return false;
}else if(pwd==null || pwd==""){
$('#codeInfo').html("请输入密码");
$('#pwd').focus();
return false;
}else{
return true;
}
}
<style type="text/css">
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button{
-webkit-appearance: none !important;
margin: 0;
}
input[type="number"]{-moz-appearance:textfield;}
</style>
<div class="form-group input-group"> <span class="input-group-addon" style="padding: 0px;"> <img alt="验证码" src="<%=basePath %>code/verifyCode" title="看不清可点击刷新验证码" style="cursor:pointer;" onclick="this.src='<%=basePath %>code/verifyCode?d='+Math.random();"></span> <input type="number" class="form-control" id="code" placeholder="输入验证码" onblur="validateCode(this.value)"/> </div>
<style type="text/css">
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button{
-webkit-appearance: none !important;
margin: 0;
}
input[type="number"]{-moz-appearance:textfield;}
</style>
<script type="text/javascript">
function checkFrom(){
var username=$('#username').val();
alert(username);
var pwd=$('#pwd').val();
if(username==null || username==""){
$('#codeInfo').html("请输入用户名");
$('#username').focus();
return false;
}else if(pwd==null || pwd==""){
$('#codeInfo').html("请输入密码");
$('#pwd').focus();
return false;
}else{
return true;
}
}
</script>
<form role="form" action="" method="post" onsubmit="return checkFrom();">
<hr />
<h5>Enter Details to Login</h5>
<br />
<div class="form-group input-group">
<span class="input-group-addon"><i class="fa fa-tag"></i></span>
<input type="text" class="form-control" placeholder="Your Username " name="username" id="username" />
</div>
<div class="form-group input-group">
<span class="input-group-addon"><i class="fa fa-lock"></i></span>
<input type="password" class="form-control" placeholder="Your Password" name="pwd" id="pwd" />
</div>
<div class="form-group input-group">
<span class="input-group-addon" style="padding: 0px;">
<img alt="验证码" src="获取验证码的URL" title="看不清可点击刷新验证码" style="cursor:pointer;"
onclick="this.src='获取验证码的URL?d='+Math.random();"></span>
<input type="number" class="form-control" id="code" placeholder="输入验证码" onblur="validateCode(this.value)" />
</div>
<div class="form-group input-group">
<span id="codeInfo" style="color: #f55"></span>
</div>
<div class="form-group">
<label class="checkbox-inline"> <input type="checkbox" />
Remember me
</label>
<span class="pull-right">
<a href="index.html" rel="external nofollow" >Forget password ? </a>
</span>
</div>
<button type="submit" class="btn btn-primary ">Login Now</button>
</form>
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