How about jquery form filter

jQuery form filter is a very practical plug-in that can help developers filter form data quickly and easily, thereby improving development efficiency and user experience. Let's take a closer look at jQuery form filters.

1. Usage scenarios of jQuery form filter

In developing web applications, forms are inevitable. When submitting a form, it is often necessary to verify and filter the input data to ensure that the entered data meets the requirements and prevent dangerous input. The jQuery form filter was developed to meet this need. It can effectively reduce the developer's workload in validating and filtering form data and improve the usability of the form.

2. Basic usage of jQuery form filter

The basic usage of jQuery form filter is very simple. Developers only need to simply call the corresponding method and pass parameters to realize the form data Validation and filtering.

1. Basic method

When using jQuery form filter, we need to first introduce the jQuery library and jQuery form filter plug-in. You can use the following method:

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Note: Here "jquery.form-filter.js" is the source file of jQuery form filter and needs to be quoted according to the actual situation.

After introduction, we can start calling the jQuery form filter method. There are mainly the following two methods:

1.1. Verify form data

The method to verify form data is filterValidate. The usage is as follows:

$(selector).filterValidate(options);

Among them, selector is the selector of the form element, and options are the configuration parameters. For example:

$("#myForm").filterValidate({

rules: {
    name: {
        required: true,
        minlength: 2
    },
    email: {
        required: true,
        email: true
    }
},
messages: {
    name: "请输入姓名",
    email: {
        required: "请输入邮箱",
        email: "请输入正确的邮箱地址"
    }
}

});

In the above code, we define the "name", Validation rules and prompt information for the two elements of "email". During verification, it will be verified according to the rules and error information will be fed back according to the prompt information.

1.2. Filter form data

The method to filter form data is filterForm. The usage is as follows:

$(selector).filterForm();

where selector is the selector of the form element. For example:

$("#myForm").filterForm();

In this method, the values ​​of all elements in the form will be filtered and the results will be stored in variables. Developers can use this variable as needed.

2. Configuration parameters

In addition to the basic methods, developers can also configure some parameters to meet different needs. There are mainly the following two parameters:

2.1, rules

rules are the validation rules for form elements. You can set a variety of rules, for example:

rules: {

name: {
    required: true,
    minlength: 2
},
email: {
    required: true,
    email: true
}

}

The above code indicates that validation rules are set for the form elements "name" and "email". Among them, required is a required item, minlength is the minimum length, and email is the email address format.

2.2. messages

messages are prompt messages for form elements. Multiple prompt messages can be set for each form element, for example:

messages: {

name: "请输入姓名",
email: {
    required: "请输入邮箱",
    email: "请输入正确的邮箱地址"
}

}

The above code indicates that the form elements "name" and "email" Prompt information is set. Among them, the required prompt information is "Please enter your email address", and the email prompt information is "Please enter the correct email address".

3. Advantages and disadvantages of jQuery form filter

As can be seen from the above introduction, jQuery form filter has the following advantages:

1. Easy to use. It only takes a few lines of code to complete the validation and filtering of form data.

2. Good scalability. Verification rules and prompt information can be customized as needed.

3. Improve development efficiency. This avoids duplication of work, reduces development difficulty, and improves development efficiency.

However, jQuery form filters also have the following shortcomings:

1. They cannot completely replace back-end validation. Although certain verification and filtering can be performed on form data, back-end verification is still required to ensure the security and reliability of the data.

2. The readability is not high. Since the rules and prompt information are written in JS code, it is not easy for non-developers to understand.

3. Compatibility issues. Since the jQuery form filter is developed based on the jQuery library, there are certain compatibility issues and need to be adjusted according to the actual situation.

4. Conclusion

In general, jQuery form filter is a very practical plug-in. For developers, it can greatly reduce the workload of form data verification and filtering, and improve Development efficiency and user experience. However, it should be noted that it cannot completely replace back-end verification, and developers need to consider its use comprehensively.

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