JQuery UI implements the sample tutorial for form verification in the Java library
Title: jQuery UI to implement the sample tutorial of form verification in the Java class library
Introduction:
Jquery UI is a popular JavaScript library that provides powerful and easy -to -use user interface components.It is a common approach to use the jQuery UI in the Java library to verify the form. It can ensure that the data entered by the user meets the required formats and rules.This tutorial will demonstrate how to use the JQuery UI implementation form verification in the Java class library and provide related example code.
Step 1: Introduce the jQuery UI library and related dependencies
First, we need to introduce the JQuery UI library and related dependence in the Java project.You can download the jquery UI library through Maven or manually and add it to the project's class path.
Example code (Maven dependencies):
<dependency>
<groupId>org.webjars</groupId>
<artifactId>jquery-ui</artifactId>
<version>1.12.1</version>
</dependency>
Step 2: Create a HTML page containing a form
Next, we need to create a HTML page containing a form.In this example, we create a simple registry, including some common verification rules, such as compulsory fields, mailbox formats, and password strength.
Example code (index.html):
html
<!DOCTYPE html>
<html>
<head>
<Title> Form Verification Example </Title>
<link rel="stylesheet" href="https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
</head>
<body>
<h2> Registration </h2>
<form id="register-form">
<laabel for = "username"> Username: </label>
<input type="text" id="username" name="username" required><br><br>
<Label for = "Email"> Email: </label>
<input type="email" id="email" name="email" required><br><br>
<Label for = "Password"> Password: </label>
<input type="password" id="password" name="password" required><br><br>
<input type = "submit" value = "Registration">
</form>
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<script src="script.js"></script>
</body>
</html>
Step 3: Write JavaScript code to implement form verification
Now, we need to write the JavaScript code to use the Jquery UI implementation form to verify.In this example, we will use the. Validate () method of jQuery UI to verify the form field.We can also use other jquery UI plugins to extend the verification rules.
Script code (script.js):
script
$(document).ready(function() {
// Use the. Validate () method to initialize the formalization form verification
$("#register-form").validate({
rules: {
username: "required",
email: {
required: true,
email: true
},
password: {
required: true,
minlength: 6
}
},
messages: {
username: "Please enter the username",
email: {
required: "Please enter the mailbox",
email: "Please enter the valid mailbox address"
},
password: {
required: "Please enter the password",
minlength: "The password length must not be less than 6 characters"
}
}
});
});
Step 4: Run and test form verification
Finally, we can run this example and test the verification function of the form.Try to enter the content that does not meet the verification rules in the form.Jquery UI will display the corresponding error message according to the verification rules.
in conclusion:
By using jQuery UI, we can easily implement form verification in the Java library.This tutorial provides a simple example that introduces how to introduce the jQuery UI library, create the HTML page containing a form, and write the JavaScript code to verify the form.In actual development, more complicated form verification can be achieved based on the requirements of the requirements and combined with other functions of the JQuery UI plugin.
