Found a total of 10000 related content
Creating Custom Inputs for Regex Validation in React and React Native
Article Introduction：Validation is a key aspect of form handling, ensuring that user input adheres to specific rules. In this article, we'll explore how to create reusable custom input components with regex validation for React and React Native, using examples like phone
2025-01-13
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711
HTML5 Forms: JavaScript and the Constraint Validation API
Article Introduction：Core points
HTML5 allows client form validation to be free of JavaScript encoding, but for more complex forms, JavaScript and constraint validation APIs can be used to enhance native validation. This is because of some limitations, such as not all browsers support all HTML5 input types and CSS selectors, and it is difficult to style the error message bubble.
The Constraint Validation API provides some methods and properties, such as .willValidate, .checkValidity(), .validity, and .setCustomValidity(). These are used to check whether the verification field is to be validated, the verification field is to be validated, and to set the validity of the field.
2025-02-21
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333
Creating Custom Validation Rules in a Laravel Project
Article Introduction：There are three ways to add custom validation rules in Laravel: using closures, Rule classes, and form requests. 1. Use closures to be suitable for lightweight verification, such as preventing the user name "admin"; 2. Create Rule classes (such as ValidUsernameRule) to make complex logic clearer and maintainable; 3. Integrate multiple rules in form requests and centrally manage verification logic. At the same time, you can set prompts through custom messages methods or incoming error message arrays to improve flexibility and maintainability.
2025-07-04
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920
Utilizing New HTML5 Input Types for Enhanced Forms
Article Introduction：The new HTML5 input type improves the form experience, the main methods include: 1. Use email and url types to realize automatic format verification and optimize the mobile keyboard; 2. Use number and range to process numerical input, which are suitable for accurate values ??and sliding selection respectively; 3. Use date series types to call the native date selector to improve time input efficiency. These features reduce the burden of front-end verification, but basic verification still needs to be supplemented by the server. Some types need to be combined with JS libraries to ensure compatibility on old devices.
2025-07-11
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384
HTML5 form validation custom error messages
Article Introduction：How to set custom error message with JavaScript? 1. Use the setCustomValidity() method combined with native form verification, and set prompts for specific input conditions through JavaScript. For example, when the username is less than 3 characters, it prompts "the username needs at least 3 characters"; 2. Combine HTML attributes (such as required, pattern) and JS supplementary verification, and return targeted prompts according to different reasons for verification failure. For example, when the email format is inconsistent, "the email must end with @example.com"; 3. Note that after each verification, you need to call setCustomValidity('') to clear the error message and select the appropriate event (input and i)
2025-07-12
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486
Dave The Diver: How To Catch Spider Crabs
Article Introduction：In Dave The Diver, there are some creatures that are not easy to catch. Or, catch alive that is. The spider crab is one of those very species, making it seem like the only way to bring these crustaceans back up to land is to viciously crack them up w
2025-01-10
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809
Prepare for Interview Like a Pro with Interview Questions CLI
Article Introduction：Prepare for Interview Like a Pro with Interview Questions CLI
What is the Interview Questions CLI?
The Interview Questions CLI is a command-line tool designed for JavaScript learners and developers who want to enhance their interview
2025-01-10
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1437
Soft Deletes in Databases: To Use or Not to Use?
Article Introduction：Soft Deletes: A Question of DesignThe topic of soft deletes, a mechanism that "flags" records as deleted instead of physically removing them, has...
2025-01-10
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