热门面试题与答案和在线测试
面向面试准备、在线测试、教程与实战练习的学习平台

通过聚焦学习路径、模拟测试和面试实战内容持续提升技能。

WithoutBook 将分主题面试题、在线练习测试、教程和对比指南整合到一个响应式学习空间中。

搜索资源库
面试准备
首页 / 面试主题 / ExtJS
WithoutBook LIVE 模拟面试 ExtJS 相关面试主题: 19

面试题与答案

了解热门 ExtJS 面试题与答案，帮助应届生和有经验的候选人为求职面试做好准备。

共 50 道题 面试题与答案

面试前建议观看的最佳 LIVE 模拟面试

了解热门 ExtJS 面试题与答案，帮助应届生和有经验的候选人为求职面试做好准备。

面试题与答案

搜索问题以查看答案。

资深 / 专家级别面试题与答案

问题 1

Do you have any advice for developers using ExtJS for the first time?

ExtJS can be used by Web Application developers who are familiar with HTML but may have little or no experience with JavaScript application development. If you are starting to build a new web application, or you are revamping an existing application, then take your time to understand the basics of the library including.
保存以便复习

保存以便复习

收藏此条目、标记为困难题，或将其加入复习集合。

打开我的学习资料库
这有帮助吗？
添加评论 查看评论
问题 2

What is the purpose of Element Object in ExtJS?

  • Element wraps most of the DOM methods and properties that you'll need, providing a convenient, unified, cross-browser DOM interface (and you can still get direct access to the underlying DOM node when you need it via Element.dom)
  • The Element.get() method provides internal caching, so multiple calls to retrieve the same object are incredibly fast
  • The most common actions performed on DOM nodes are built into direct, cross-browser Element methods (add/remove CSS classes, add/remove event handlers, positioning, sizing, animation, drag/drop, etc.)
保存以便复习

保存以便复习

收藏此条目、标记为困难题，或将其加入复习集合。

打开我的学习资料库
这有帮助吗？
添加评论 查看评论
问题 3

For example, to show our message when any paragraph in our test page is clicked, what is the ExtJS code on paragraph click?

Ext.onReady(function() {
Ext.select('p').on('click', function() {
alert("You clicked a paragraph");
});
});

or

Ext.onReady(function() {
var paragraphClicked = function() {
alert("You clicked a paragraph");
}
Ext.select('p').on('click', paragraphClicked);
});
保存以便复习

保存以便复习

收藏此条目、标记为困难题，或将其加入复习集合。

打开我的学习资料库
这有帮助吗？
添加评论 查看评论
问题 4

How to handle event for a extjs component?

1) Using listeners config object.
For ex for grid events : listeners: {rowclick: gridRowClickHandler,rowdblclick: gridRowDoubleClickHandler}
2) Using addListener( String eventName, Function handler, [Object scope], [Object options] ) : void
Appends an event handler to this component
3) Using on( String eventName, Function handler, [Object scope], [Object options] ) : void
Appends an event handler to this element (shorthand for addListener)
For ex: store.on( "datachanged", function( store ){ ..... });
保存以便复习

保存以便复习

收藏此条目、标记为困难题，或将其加入复习集合。

打开我的学习资料库
这有帮助吗？
添加评论 查看评论
问题 5

How to handle exception while loading datastore?

Using loadexception event.
syntax: store.loadexception() : Fires if an exception occurs in the Proxy during loading.
use beforeload : ( Store this, Object options ) : Fires before a request is made for a new data object. If the beforeload handler returns false the load action will be canceled.
syntax:
store.on('loadexception', function(event, options, response, error) {
alert("Handling the error");
event.stopEvent();
});
保存以便复习

保存以便复习

收藏此条目、标记为困难题，或将其加入复习集合。

打开我的学习资料库
这有帮助吗？
添加评论 查看评论
问题 6

How we can apply pagination in grid panel?

using Ext.PagingToolbar plugin, we can implement pagination to a grid panel
syntax:
new Ext.PagingToolbar({
pageSize: 25,
store: store,
displayInfo: true,
displayMsg: 'Displaying topics {0} - {1} of {2}',
emptyMsg: "No topics to display",
})
// trigger the data store load
store.load({params:{start:0, limit:25}});
保存以便复习

保存以便复习

收藏此条目、标记为困难题，或将其加入复习集合。

打开我的学习资料库
这有帮助吗？
添加评论 查看评论
问题 7

What is the purpose of Load mask?

To apply mask to page level / component level.
restrict user not to access any components in page
var pageProcessBox = new Ext.LoadMask( Ext.getBody(), { msg: 'Loading Employee details.' } );
pageProcessBox.show();
保存以便复习

保存以便复习

收藏此条目、标记为困难题，或将其加入复习集合。

打开我的学习资料库
这有帮助吗？
添加评论 查看评论
问题 11

How to register callbacks to the load and exception events of the JsonStore?

var grid = new Ext.grid.GridPanel({
store: new Ext.data.JsonStore({
[...]
listeners: {
load: this.onLoadSuccess.crateDelegate(this),
exception: this.onLoadException.createDelegate(this)
}
}),

onLoadSuccess: function () {
// success
},

onLoadException: function () {
// error
},

[...]
}
保存以便复习

保存以便复习

收藏此条目、标记为困难题，或将其加入复习集合。

打开我的学习资料库
这有帮助吗？
添加评论 查看评论
问题 12

Why did you choose Ext JS?

Given the wide range of JavaScript libraries available it was important to choose the right one. We needed to choose a library that was consistent in the way that it presents information to the user, but also consistent in the way that you code using the library.

With all Ext components extending the ‘Observable’ class we had the ability to write consistent code in an event-driven manner, much like writing a desktop application, not easily achieved with other libraries. What’s more is that we knew it would work cross-browser, again something not easily achieved that saves countless hours on large projects.
保存以便复习

保存以便复习

收藏此条目、标记为困难题，或将其加入复习集合。

打开我的学习资料库
这有帮助吗？
添加评论 查看评论
问题 13

What features could we add to Ext to make building a rich application like PLANet easier in the future?

Once an application gets over a certain size, and customer releases become more frequent, the burden of testing the application starts to take its toll. An Ext supported test suite would save huge amounts of time. The current problem of test suites with Ext is being able to reliably predict the automatic ids that Ext generates for page elements. Test tools are beginning to implement support for CSS selectors to overcome this problem, but few currently exist. Ext could provide better documentation on how to build better test cases with Ext so that more time can be spent on development rather than testing.
保存以便复习

保存以便复习

收藏此条目、标记为困难题，或将其加入复习集合。

打开我的学习资料库
这有帮助吗？
添加评论 查看评论
问题 14

Difference between ExtJS and JQuery?

ExtJs and JQuery are kind of apples and oranges. You can compare Ext Core to JQuery, and ExtJs to JQuery UI.
Ext JS is a full-fledged widget library while jQuery (not jQuery UI) and Mootools are JavaScript frameworks that help with DOM manipulation etc.
Whilst jQuery and Mootools help with the general workings of a site.
jQuery UI is a much less rich set of components.
Ext JS seems to be focussed on tables and storing data, plus manipulating it.
保存以便复习

保存以便复习

收藏此条目、标记为困难题，或将其加入复习集合。

打开我的学习资料库
这有帮助吗？
添加评论 查看评论

用户评价最有帮助的内容：

相关面试主题

Ansible 面试题与答案共 30 道题ES6 面试题与答案共 30 道题Electron.js 面试题与答案共 24 道题RxJS 面试题与答案共 29 道题NodeJS 面试题与答案共 30 道题Vue.js 面试题与答案共 30 道题ExtJS 面试题与答案共 50 道题jQuery 面试题与答案共 22 道题Svelte.js 面试题与答案共 30 道题Shell Scripting 面试题与答案共 50 道题Next.js 面试题与答案共 30 道题Knockout JS 面试题与答案共 25 道题TypeScript 面试题与答案共 38 道题Terraform 面试题与答案共 30 道题PowerShell 面试题与答案共 27 道题JCL 面试题与答案共 20 道题Ajax 面试题与答案共 58 道题JavaScript 面试题与答案共 59 道题Express.js 面试题与答案共 30 道题

全部面试主题

C# 面试题与答案共 41 道题LINQ 面试题与答案共 20 道题ASP .NET 面试题与答案共 31 道题Microsoft .NET 面试题与答案共 60 道题ASP 面试题与答案共 82 道题IBM Watson 面试题与答案共 30 道题Perplexity AI 面试题与答案共 40 道题NLP 面试题与答案共 30 道题ChatGPT 面试题与答案共 20 道题AI Agents (Agentic AI) 面试题与答案共 50 道题OpenCV 面试题与答案共 36 道题Amazon SageMaker 面试题与答案共 30 道题TensorFlow 面试题与答案共 30 道题Hugging Face 面试题与答案共 30 道题Gemini AI 面试题与答案共 50 道题Artificial Intelligence (AI) 面试题与答案共 47 道题Oracle AI Agents 面试题与答案共 50 道题Machine Learning 面试题与答案共 30 道题Google Cloud AI 面试题与答案共 30 道题Swift 面试题与答案共 49 道题Golang 面试题与答案共 30 道题Embedded C 面试题与答案共 30 道题VBA 面试题与答案共 30 道题C++ 面试题与答案共 142 道题R Language 面试题与答案共 30 道题COBOL 面试题与答案共 50 道题Python Coding 面试题与答案共 20 道题Scala 面试题与答案共 48 道题CCNA 面试题与答案共 40 道题Oracle Cloud Infrastructure (OCI) 面试题与答案共 100 道题AWS 面试题与答案共 87 道题Microsoft Azure 面试题与答案共 35 道题Azure Data Factory 面试题与答案共 30 道题OpenStack 面试题与答案共 30 道题ServiceNow 面试题与答案共 30 道题Snowflake 面试题与答案共 30 道题Oracle APEX 面试题与答案共 23 道题PDPA 面试题与答案共 20 道题OSHA 面试题与答案共 20 道题HIPPA 面试题与答案共 20 道题PHIPA 面试题与答案共 20 道题FERPA 面试题与答案共 20 道题DPDP 面试题与答案共 30 道题PIPEDA 面试题与答案共 20 道题CCPA 面试题与答案共 20 道题GDPR 面试题与答案共 30 道题HITRUST 面试题与答案共 20 道题LGPD 面试题与答案共 20 道题Data Structures 面试题与答案共 49 道题Computer Networking 面试题与答案共 65 道题Microsoft Excel 面试题与答案共 37 道题Computer Basics 面试题与答案共 62 道题Computer Science 面试题与答案共 50 道题Operating System 面试题与答案共 22 道题MS Word 面试题与答案共 50 道题Tips and Tricks 面试题与答案共 30 道题PoowerPoint 面试题与答案共 50 道题Deep Learning 面试题与答案共 29 道题PySpark 面试题与答案共 30 道题Flask 面试题与答案共 40 道题PyTorch 面试题与答案共 25 道题Data Science 面试题与答案共 23 道题SciPy 面试题与答案共 30 道题Generative AI 面试题与答案共 30 道题NumPy 面试题与答案共 30 道题Python 面试题与答案共 106 道题Python Pandas 面试题与答案共 48 道题Python Matplotlib 面试题与答案共 30 道题Django 面试题与答案共 50 道题Pandas 面试题与答案共 30 道题Apache Hive 面试题与答案共 30 道题PostgreSQL 面试题与答案共 30 道题SSIS 面试题与答案共 30 道题Teradata 面试题与答案共 20 道题SQL Query 面试题与答案共 70 道题SQLite 面试题与答案共 53 道题Cassandra 面试题与答案共 25 道题Neo4j 面试题与答案共 44 道题MSSQL 面试题与答案共 50 道题OrientDB 面试题与答案共 46 道题SQL 面试题与答案共 152 道题Data Warehouse 面试题与答案共 20 道题IBM DB2 面试题与答案共 40 道题Elasticsearch 面试题与答案共 61 道题Data Mining 面试题与答案共 30 道题Oracle 面试题与答案共 34 道题MongoDB 面试题与答案共 27 道题AWS DynamoDB 面试题与答案共 46 道题Entity Framework 面试题与答案共 46 道题MySQL 面试题与答案共 108 道题Data Modeling 面试题与答案共 30 道题Redis Cache 面试题与答案共 20 道题MariaDB 面试题与答案共 40 道题DBMS 面试题与答案共 73 道题Robotics 面试题与答案共 28 道题AutoCAD 面试题与答案共 30 道题Power System 面试题与答案共 28 道题Electrical Engineering 面试题与答案共 30 道题Verilog 面试题与答案共 30 道题MATLAB 面试题与答案共 25 道题Digital Electronics 面试题与答案共 38 道题VLSI 面试题与答案共 30 道题Software Engineering 面试题与答案共 27 道题Civil Engineering 面试题与答案共 30 道题Electrical Machines 面试题与答案共 29 道题Data Engineer 面试题与答案共 30 道题Web Services 面试题与答案共 10 道题Salesforce Lightning 面试题与答案共 30 道题IBM Integration Bus 面试题与答案共 30 道题Power BI 面试题与答案共 24 道题OIC 面试题与答案共 30 道题Web API 面试题与答案共 31 道题Dell Boomi 面试题与答案共 30 道题Salesforce 面试题与答案共 57 道题IBM DataStage 面试题与答案共 20 道题Talend 面试题与答案共 34 道题TIBCO 面试题与答案共 30 道题Informatica 面试题与答案共 48 道题Oracle CXUnity 面试题与答案共 29 道题Java 21 面试题与答案共 21 道题Google Gson 面试题与答案共 8 道题RMI 面试题与答案共 31 道题Java Support 面试题与答案共 30 道题Apache Camel 面试题与答案共 20 道题Struts 面试题与答案共 84 道题JAXB 面试题与答案共 18 道题J2EE 面试题与答案共 25 道题JUnit 面试题与答案共 24 道题Java OOPs 面试题与答案共 30 道题Apache Tapestry 面试题与答案共 9 道题JSP 面试题与答案共 49 道题Java Concurrency 面试题与答案共 30 道题JDBC 面试题与答案共 27 道题Java 11 面试题与答案共 24 道题Java Garbage Collection 面试题与答案共 30 道题Spring Framework 面试题与答案共 53 道题Java Swing 面试题与答案共 27 道题Java Design Patterns 面试题与答案共 15 道题JPA 面试题与答案共 41 道题JMS 面试题与答案共 64 道题JSF 面试题与答案共 24 道题Java 8 面试题与答案共 30 道题Hibernate 面试题与答案共 52 道题Java 17 面试题与答案共 20 道题EJB 面试题与答案共 80 道题Java Beans 面试题与答案共 57 道题Java Exception Handling 面试题与答案共 30 道题Spring Boot 面试题与答案共 50 道题Servlets 面试题与答案共 34 道题Kotlin 面试题与答案共 30 道题Java 15 面试题与答案共 16 道题Java Multithreading 面试题与答案共 30 道题Apache Wicket 面试题与答案共 26 道题Core Java 面试题与答案共 306 道题JBoss 面试题与答案共 14 道题Log4j 面试题与答案共 35 道题Java Mail 面试题与答案共 27 道题Java Applet 面试题与答案共 29 道题Finance 面试题与答案共 30 道题JIRA 面试题与答案共 30 道题SAP MM 面试题与答案共 30 道题SAP ABAP 面试题与答案共 24 道题SCCM 面试题与答案共 30 道题Tally 面试题与答案共 30 道题Pega 面试题与答案共 30 道题ITIL 面试题与答案共 25 道题Android 面试题与答案共 14 道题Mobile Computing 面试题与答案共 20 道题Xamarin 面试题与答案共 31 道题iOS 面试题与答案共 52 道题Ionic 面试题与答案共 32 道题Desktop Support 面试题与答案共 30 道题IAS 面试题与答案共 56 道题PHP OOPs 面试题与答案共 30 道题OOPs 面试题与答案共 30 道题Fashion Designer 面试题与答案共 20 道题CICS 面试题与答案共 30 道题Yoga Teachers Training 面试题与答案共 30 道题Nursing 面试题与答案共 40 道题Linked List 面试题与答案共 15 道题Dynamic Programming 面试题与答案共 30 道题SharePoint 面试题与答案共 28 道题Behavioral 面试题与答案共 29 道题School Teachers 面试题与答案共 25 道题Language in C 面试题与答案共 80 道题Statistics 面试题与答案共 30 道题Digital Marketing 面试题与答案共 40 道题Apache Spark 面试题与答案共 24 道题Full-Stack Developer 面试题与答案共 60 道题IIS 面试题与答案共 30 道题System Design 面试题与答案共 30 道题VISA 面试题与答案共 30 道题SEO 面试题与答案共 51 道题Google Analytics 面试题与答案共 30 道题Cloud Computing 面试题与答案共 42 道题BPO 面试题与答案共 48 道题ANT 面试题与答案共 10 道题Content Writer 面试题与答案共 30 道题SAS 面试题与答案共 24 道题Control System 面试题与答案共 28 道题Agile Methodology 面试题与答案共 30 道题HR Questions 面试题与答案共 49 道题REST API 面试题与答案共 52 道题Banking 面试题与答案共 20 道题Checkpoint 面试题与答案共 20 道题Blockchain 面试题与答案共 29 道题Technical Support 面试题与答案共 30 道题Mainframe 面试题与答案共 20 道题Hadoop 面试题与答案共 40 道题Chemistry 面试题与答案共 50 道题Docker 面试题与答案共 30 道题Sales 面试题与答案共 30 道题Nature 面试题与答案共 20 道题RPA 面试题与答案共 26 道题Interview Tips 面试题与答案共 30 道题College Teachers 面试题与答案共 30 道题SDLC 面试题与答案共 75 道题Cryptography 面试题与答案共 40 道题Blue Prism 面试题与答案共 20 道题Memcached 面试题与答案共 28 道题GIT 面试题与答案共 30 道题Splunk 面试题与答案共 30 道题DevOps 面试题与答案共 45 道题Accounting 面试题与答案共 30 道题SSB 面试题与答案共 30 道题Algorithm 面试题与答案共 50 道题Business Analyst 面试题与答案共 40 道题OSPF 面试题与答案共 30 道题Sqoop 面试题与答案共 30 道题JSON 面试题与答案共 16 道题IoT 面试题与答案共 30 道题Insurance 面试题与答案共 30 道题Scrum Master 面试题与答案共 30 道题Accounts Payable 面试题与答案共 30 道题Computer Graphics 面试题与答案共 25 道题GraphQL 面试题与答案共 32 道题Bitcoin 面试题与答案共 30 道题Active Directory 面试题与答案共 30 道题Laravel 面试题与答案共 30 道题XML 面试题与答案共 25 道题Kubernetes 面试题与答案共 30 道题Microservices 面试题与答案共 30 道题Apache Kafka 面试题与答案共 38 道题Tableau 面试题与答案共 20 道题Adobe AEM 面试题与答案共 50 道题Ansible 面试题与答案共 30 道题ES6 面试题与答案共 30 道题Electron.js 面试题与答案共 24 道题RxJS 面试题与答案共 29 道题NodeJS 面试题与答案共 30 道题Vue.js 面试题与答案共 30 道题ExtJS 面试题与答案共 50 道题jQuery 面试题与答案共 22 道题Svelte.js 面试题与答案共 30 道题Shell Scripting 面试题与答案共 50 道题Next.js 面试题与答案共 30 道题Knockout JS 面试题与答案共 25 道题TypeScript 面试题与答案共 38 道题Terraform 面试题与答案共 30 道题PowerShell 面试题与答案共 27 道题JCL 面试题与答案共 20 道题Ajax 面试题与答案共 58 道题JavaScript 面试题与答案共 59 道题Express.js 面试题与答案共 30 道题Ethical Hacking 面试题与答案共 40 道题Cyber Security 面试题与答案共 50 道题PII 面试题与答案共 30 道题Data Protection Act 面试题与答案共 20 道题BGP 面试题与答案共 30 道题Linux 面试题与答案共 43 道题Unix 面试题与答案共 105 道题Weblogic 面试题与答案共 30 道题Tomcat 面试题与答案共 16 道题Glassfish 面试题与答案共 8 道题Ubuntu 面试题与答案共 30 道题SDET 面试题与答案共 30 道题Mobile Testing 面试题与答案共 30 道题UiPath 面试题与答案共 38 道题Quality Assurance 面试题与答案共 56 道题Selenium 面试题与答案共 40 道题Kali Linux 面试题与答案共 29 道题API Testing 面试题与答案共 30 道题Appium 面试题与答案共 30 道题ETL Testing 面试题与答案共 20 道题QTP 面试题与答案共 44 道题Cucumber 面试题与答案共 30 道题Postman 面试题与答案共 30 道题TestNG 面试题与答案共 38 道题Frontend Developer 面试题与答案共 30 道题Zend Framework 面试题与答案共 24 道题RichFaces 面试题与答案共 26 道题Flutter 面试题与答案共 25 道题HTML 面试题与答案共 27 道题CakePHP 面试题与答案共 30 道题React 面试题与答案共 40 道题React Native 面试题与答案共 26 道题Angular 8 面试题与答案共 32 道题Angular JS 面试题与答案共 21 道题Web Developer 面试题与答案共 50 道题Dojo 面试题与答案共 23 道题GWT 面试题与答案共 27 道题Symfony 面试题与答案共 30 道题Ruby On Rails 面试题与答案共 74 道题CSS 面试题与答案共 74 道题Yii 面试题与答案共 30 道题Angular 面试题与答案共 50 道题PHP 面试题与答案共 27 道题Oracle JET(OJET) 面试题与答案共 54 道题
版权所有 © 2026，WithoutBook。