search
HomeWeb Front-endFront-end Q&Ajquery sets input box value
jquery sets input box valueMay 08, 2023 pm 01:45 PM

jQuery is a JavaScript library that can be used to simplify HTML document traversal and manipulation, event handling, animation, Ajax and other operations. In web development, we often need to use jQuery to set and get the value of the input box. This article will introduce how to use jQuery to set the value of an input box.

1. Get the value of the input box

Before using jQuery to set the value of the input box, we need to get the value of the input box first. jQuery provides the val() method to obtain the value of the input box, for example:

var inputVal = $('input').val();

In the above code, we use the selector to obtain an input element, and obtain the value of the input box through the val() method , and then assign it to the variable inputVal.

2. Set the value of the input box

1. Set the value of a single input box

Setting the value of a single input box through jQuery is very simple, just use val() Just use the method. For example:

$('input').val('Hello World');

In the above code, we use the selector to obtain an input element and set its value to 'Hello World' through the val() method.

2. Set the values ​​of multiple input boxes

If we need to set the values ​​of multiple input boxes at the same time, we can use the each() method to traverse. For example:

$('input').each(function(){
   $(this).val('Hello World');
});

In the above code, we use the each() method to traverse the selected input element, and use the val() method to set its value to 'Hello World'.

3. Set the value of the selection box and text field

In addition to the input box, we can also use the val() method to set the value of the selection box and text field. For example:

$('select').val('option2');
$('textarea').val('Hello World');

In the above code, we use the val() method to set the values ​​of the selection box and text field to 'option2' and 'Hello World' respectively.

3. Summary

This article introduces how to use jQuery to set the value of the input box. By using the val() method, we can easily get and set the value of the input box. In addition, we can also use the each() method to set the values ​​​​of multiple input boxes at the same time, and use the val() method to set the values ​​​​of the selection box and text field. In actual development, we often need to use jQuery to manipulate the value of the input box. Mastering these skills will improve our development efficiency.

The above is the detailed content of jquery sets input box value. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
What is useEffect? How do you use it to perform side effects?What is useEffect? How do you use it to perform side effects?Mar 19, 2025 pm 03:58 PM

The article discusses useEffect in React, a hook for managing side effects like data fetching and DOM manipulation in functional components. It explains usage, common side effects, and cleanup to prevent issues like memory leaks.

Explain the concept of lazy loading.Explain the concept of lazy loading.Mar 13, 2025 pm 07:47 PM

Lazy loading delays loading of content until needed, improving web performance and user experience by reducing initial load times and server load.

How does currying work in JavaScript, and what are its benefits?How does currying work in JavaScript, and what are its benefits?Mar 18, 2025 pm 01:45 PM

The article discusses currying in JavaScript, a technique transforming multi-argument functions into single-argument function sequences. It explores currying's implementation, benefits like partial application, and practical uses, enhancing code read

What are higher-order functions in JavaScript, and how can they be used to write more concise and reusable code?What are higher-order functions in JavaScript, and how can they be used to write more concise and reusable code?Mar 18, 2025 pm 01:44 PM

Higher-order functions in JavaScript enhance code conciseness, reusability, modularity, and performance through abstraction, common patterns, and optimization techniques.

How does the React reconciliation algorithm work?How does the React reconciliation algorithm work?Mar 18, 2025 pm 01:58 PM

The article explains React's reconciliation algorithm, which efficiently updates the DOM by comparing Virtual DOM trees. It discusses performance benefits, optimization techniques, and impacts on user experience.Character count: 159

How do you connect React components to the Redux store using connect()?How do you connect React components to the Redux store using connect()?Mar 21, 2025 pm 06:23 PM

Article discusses connecting React components to Redux store using connect(), explaining mapStateToProps, mapDispatchToProps, and performance impacts.

What is useContext? How do you use it to share state between components?What is useContext? How do you use it to share state between components?Mar 19, 2025 pm 03:59 PM

The article explains useContext in React, which simplifies state management by avoiding prop drilling. It discusses benefits like centralized state and performance improvements through reduced re-renders.

How do you prevent default behavior in event handlers?How do you prevent default behavior in event handlers?Mar 19, 2025 pm 04:10 PM

Article discusses preventing default behavior in event handlers using preventDefault() method, its benefits like enhanced user experience, and potential issues like accessibility concerns.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Best Graphic Settings
2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. How to Fix Audio if You Can't Hear Anyone
3 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools

SecLists

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

SublimeText3 Linux new version

SublimeText3 Linux new version

SublimeText3 Linux latest version

EditPlus Chinese cracked version

EditPlus Chinese cracked version

Small size, syntax highlighting, does not support code prompt function