How to determine whether the account password is wrong with jquery

With the popularity of the Internet, more and more websites and mobile applications require users to provide account and password information when registering and logging in. This has become inevitable in daily life. The security protection of account numbers and passwords has become a top priority. For this reason, many websites and mobile applications have adopted various means to enhance the security of account numbers and passwords. Among them, using jQuery plug-in for account and password verification is a relatively common method.

jQuery is a fast, small, feature-rich JavaScript library. It can greatly simplify operations such as HTML document traversal, event processing, animation design, and AJAX interaction in web development. For account and password verification, jQuery provides a wealth of methods and plug-ins. The following will briefly introduce how to use jQuery to implement the verification function of account and password.

1. Introduction of jQuery verification plug-in

Before using the jQuery verification plug-in, we need to introduce the jQuery library and jQuery verification plug-in first. The specific method is as follows:

1. Download the jQuery library, and then introduce it in the head of the HTML document:

2. Download the jQuery validation plug-in, and then introduce it in the head of the HTML document:

Pass With the above introduction method, we can use the jQuery validation plug-in in HTML documents.

2. Use of jQuery validation plug-in

In order to use the jQuery validation plug-in, we need to add some specific HTML elements and attributes to the form. Here is a sample form:

In the above form, we use the element to obtain the data entered by the user. For the account and password input boxes, we have added the required attribute to make them required. At the same time, for the password input box, we also specified a minimum input length of 6 characters. These HTML elements and attributes allow the jQuery verification plug-in to correctly implement account and password verification.

Next, introduce the jQuery validation plug-in in the JavaScript code, and then call it in the following way:

$(document).ready(function(){
$("#myForm" ).validate();
});

After running, we can see the effect. If the user does not enter their name, email address or password, the user will be prompted to fill in this information. If the password is less than 6 characters long, the user will also be prompted to change the password to meet the minimum length requirement.

3. Custom methods of jQuery verification plug-in

The jQuery verification plug-in also provides some custom methods that allow us to verify accounts and passwords more flexibly. For example, sometimes we need to additionally verify the complexity of the password to ensure the security of the password. We can do this through custom methods.

The following is a sample code for customizing password strength verification:

$.validator.addMethod("pwstrength", function(value, element) {
var pwRegex = /^ (?=.[a-z])(?=.[A-Z])(?=.*\d)[^]{8,}$/;
return pwRegex.test(value) ;
}, "Password strength is insufficient");

First, we define a custom method named pwstrength, which can verify that the value of the input box does not meet the password strength requirements. In the implementation of this verification method, we use a regular expression to check the password complexity. If the complexity is not enough, return false, otherwise return true. Finally, we also defined a prompt message when the verification fails.

Then, in the form, we can use the custom verification method like this:

password

When using custom validation methods, we need to add a custom attribute to the input box of the form, such as the pwstrength attribute in the above example. In this way, when the user submits the form, the jQuery validation plug-in will automatically call the custom method for verification.

4. Summary

In this article, we introduce the use of jQuery verification plug-in to implement the verification function of account and password. During the implementation process, we need to introduce the jQuery library and jQuery validation plug-in, then add specific HTML elements and attributes to the form, and finally call the jQuery validation plug-in in the JavaScript code. If we need to further strengthen the security of the password, we can also use a custom verification method. Through these methods, we can provide users with a more secure and reliable account and password management method.

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