Home > Developer > Java

Jquery Form Verification

Source: Internet
Author: User
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

 

1. Only numbers can be entered

 

<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

 

<Html xmlns = "http://www.w3.org/1999/xhtml">

<Head>

<Title> </title>

<Style type = "text/css">

# Error

{

Padding-left: 15px;

Color: Red;

}

</Style>

<Script src = "../Scripts/jquery-1.4.1.js" type = "text/javascript"> </script>

<Script type = "text/javascript">

$ (Document). ready (function (){

$ ("# Error"). hide ();

$ ("# Button1"). click (function (){

Var $ val = $ ("# Text1"). val ();

Var code;

For (var I = 0; I <$ val. length; I ++ ){

// CharAt () gets the character string at the specified position. charCodeAt () returns the encoding of the character string.

// The ASCII value of 0 is 48, and the ASCII value of 9 is 57.

Var code = $ val. charAt (I). charCodeAt (0 );

If (code <48 | code> 57 ){

$ ("# Error"). show ();

Break;

}

Else {

$ ("# Error"). hide ();

}

}

});

});

</Script>

</Head>

<Body>

<Div>

Name: <input id = "Text1" type = "text"/> <span id = "error"> Please enter numeric </span>

</Div>

<Input id = "Button1" type = "button" value = "button"/>

</Body>

</Html>

 

2. Check whether the check box is selected

 

<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

 

<Html xmlns = "http://www.w3.org/1999/xhtml">

<Head>

<Title> </title>

<Style type = "text/css">

# Error

{

Padding-left: 15px;

Color: Red;

}

</Style>

<Script src = "../Scripts/jquery-1.4.1.js" type = "text/javascript"> </script>

<Script type = "text/javascript">

$ (Document). ready (function (){

$ ("# Error"). hide ();

$ ("# Button1"). click (function (){

Var $ val = '';

Var count = $ ('input: checkbox: checked'). length;

If (count = 0 ){

$ ("# Error"). show ();

}

Else {

$ ("# Error"). hide ();

 

$ ("Input: checkbox"). each (function (){

If ($ (this). is (': checked ')){

$ Val + = $ (this). val ();

}

})

Alert ($ val );

}

});

 

});

</Script>

</Head>

<Body>

<Div>

<Input id = "Checkbox1" type = "checkbox" value = 'hotdogs $ 2'/> Hotdogs $2 <br/>

<Input id = "Checkbox2" type = "checkbox" value = 'chocolate $ 5'/> Chocolate $5 <br/>

<Input id = "Checkbox3" type = "checkbox" value = 'cake $ 3'/> Cake $3 <br/>

<Input id = "Checkbox4" type = "checkbox" value = 'ice $ 4'/> Ice Crime $4 <br/>

<Span id = "error"> Please select checkbox as least </span>

</Div>

<Input id = "Button1" type = "button" value = "button"/>

</Body>

</Html>

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
age verification form html equifax identity verification form simple jquery contact form jquery form validation tutorial get all form elements jquery get all form data jquery form validation example in jquery
Related Article
Java.sql.SQLException:Zero Date value Prohibited exception ha...
Java's garbage collection mechanism
The difference between fail-fast and fail-safe in Java
Advantages and disadvantages of AWT/SWING/SWT in Java GUI pro...

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

What's Trending
Top 10 Tags
datastax versions naming convention zookeeper client class definition md5 microsoft sql server 2005 data structures exception handling error handling
Top 10 Keywords
microsoft download center down wordpress address url site address url wordpress address url windows installer 4 0 download 302 not found web address url definition site address url wordpress db2 integer mac os installation step by step pdf abbreviation for return

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    Open a Ticket

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

    Learn More