Sometimes when we register an account and log in to the system, all verifications can be submitted before we can submit it. This requires Jquery to implement form verification. Today, I will share with you a piece of code to implement form verification based on Jquery.
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Reg</title>
<style>
.state1{
color:#aaa;
}
.state2{
color:#000;
}
.state3{
color:red;
}
.state4{
color:green;
}
</style>
<script src=""></script>
<script>
$(function(){
var ok1=false;
var ok2=false;
var ok3=false;
var ok4=false;
// Verify username $('input[name="username"]').focus(function(){
$(this).next().text('The username should be between 3-20 digits').removeClass('state1').addClass('state2');
}).blur(function(){
if($(this).val().length >= 3 && $(this).val().length <=12 && $(this).val()!=''){
$(this).next().text('Input is successful').removeClass('state1').addClass('state4');
ok1=true;
}else{
$(this).next().text('The username should be between 3-20 digits').removeClass('state1').addClass('state3');
}
});
//Verify password $('input[name="password"]').focus(function(){
$(this).next().text('The password should be between 6-20 digits').removeClass('state1').addClass('state2');
}).blur(function(){
if($(this).val().length >= 6 && $(this).val().length <=20 && $(this).val()!=''){
$(this).next().text('Input is successful').removeClass('state1').addClass('state4');
ok2=true;
}else{
$(this).next().text('The password should be between 6-20 digits').removeClass('state1').addClass('state3');
}
});
//Verify password $('input[name="repass"]').focus(function(){
$(this).next().text('The confirmation password entered must be the same as the password above, and the rules must be the same').removeClass('state1').addClass('state2');
}).blur(function(){
if($(this).val().length >= 6 && $(this).val().length <=20 && $(this).val()!='' && $(this).val() == $('input[name="password"]').val()){
$(this).next().text('Input is successful').removeClass('state1').addClass('state4');
ok3=true;
}else{
$(this).next().text('The confirmation password entered must be the same as the password above, and the rules must be the same').removeClass('state1').addClass('state3');
}
});
//Verify the email address $('input[name="email"]').focus(function(){
$(this).next().text('Please enter the correct EMAIL format').removeClass('state1').addClass('state2');
}).blur(function(){
if($(this).val().search(/\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/)==-1){
$(this).next().text('Please enter the correct EMAIL format').removeClass('state1').addClass('state3');
}else{
$(this).next().text('Input is successful').removeClass('state1').addClass('state4');
ok4=true;
}
});
//Submit button, all verifications can be passed before submitting
$('.submit').click(function(){
if(ok1 && ok2 && ok3 && ok4){
$('form').submit();
}else{
return false;
}
});
});
</script>
</head>
<body>
<form action='' method='post' >
use household name:<input type="text" name="username">
<span class='state1'>请输入usehouseholdname</span><br/><br/>
password:<input type="password" name="password">
<span class='state1'>请输入password</span><br/><br/>
确认password:<input type="password" name="repass">
<span class='state1'>请输入确认password</span><br/><br/>
Mail:<input type="text" name="email">
<span class='state1'>请输入Mail</span><br/><br/>
<a href="javascript:;"><img class='submit' type='image' src='./images/' /></a>
</form>
</body>
</html>
The above is all about this article, I hope you like it.