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!

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.

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

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

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

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

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

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.

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


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.

Dreamweaver Mac version
Visual web development tools

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 latest version

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function