ajax 处理php返回的json 数组问题
{"status":1,"info":["201209\/20120905rmyr8iZMs6.jpeg","201209\/20120905b1i8bI1C9x.jpeg","201209\/20120905Z0zFDjUF61.jpeg","201209\/20120905144fN9oLlz.jpeg"],"data":""}
这是返回的数据,info里面是一个数组,我想用js特效翻图片,我怎么获取图片的下表并判断有没有上一张或下一张图片
------解决方案--------------------
我的理解是,可以先把json数据解析成数组,然后就能得到info的数据,按照上面的格式,下标应该是数字递增的,从0开始,可以得到info数组的长度,也就能得到最后一张图片的下标了,这样是否可以判断?至于json数据解析数组,可以去网上查下,封装的库很多,常见的可以下个json.js的库(www.json.org),然后用string.parseJSON()转化。
其实像你说的这种效果,网上应该有很多示例的,可以查下~
------解决方案--------------------
- JScript code
var str='{"status":1,"info":["201209\/20120905rmyr8iZMs6.jpeg","201209\/20120905b1i8bI1C9x.jpeg","201209\/20120905Z0zFDjUF61.jpeg","201209\/20120905144fN9oLlz.jpeg"],"data":""}'; var obj = eval('(' + str + ')'); alert(obj.info.length);//info长度 为4 var i=3;//测试最后一个元素 if("undefined" == typeof(obj.info[(i+1)])){ alert(321); }else{ alert(obj.info[(i)]) } <div class="clear"> </div>

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


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

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Dreamweaver CS6
Visual web development tools

Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

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

SublimeText3 Chinese version
Chinese version, very easy to use

Atom editor mac version download
The most popular open source editor