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8th IEEE International Conference on Software Testing, Verification and Validation Workshops (ICSTW)

作者： Mahajan, Sonal Halfond, William G. J. Univ Southern Calif Los Angeles CA 90089 USA

ISBN: (纸本)9781479971251

Presentation failures in a website can negatively impact end users' perception of the quality of the website, the services it delivers, and the branding a company is trying to achieve. Presentation failures can occur easily in modern web applications because of the highly complex and dynamic nature of the HTML, CSS, and javascript that define a web page's visual appearance. Debugging such failures manually is time consuming and error-prone, and existing techniques do not provide an automated debugging solution. In this paper, we present our tool, WebSee, that provides a fully automated debugging solution for presentation failures in web applications. When run on real-world web applications, WebSee was able to accurately and quickly identify faulty HTML elements.

关键词： web applications Debugging HyperText Markup Language websites java script error prone presentation Presentation failures

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An Efficient Mechanism of Generating Call Graph for javascript using Dynamic Analysis in Web Application

An Efficient Mechanism of Generating Call Graph for JavaScri...

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International Conference on Informatics, Electronics and Vision (ICIEV)

作者： Toma, Tajkia Rahman Islam, Md Shariful Univ Dhaka Inst Informat Technol Dhaka 1000 Bangladesh

ISBN: (纸本)9781479951802

Web applications are replacing traditional native applications in recent years. For web applications, javascript is the most extensively used client side programming languages. The large javascript codebase often makes applications hard to understand, maintain and extend. Call graph is a human understandable program representation that can be used as a basis for maintenance and further extension of the application. In maintenance phase call graph can play a vital role by facilitating developers to easily trace the code that implements a particular feature. There is insufficient tool support for generating call graph for javascript. For its dynamic nature, javascript call graph generation becomes challenging. We present a dynamic analysis based mechanism to construct the call graph of javascript of a client side web application. Our evaluation on web applications demonstrates that the technique is precise and the rate of unidentified nodes in call graph is acceptable.

关键词： web applications Dynamic analysis Line graph java script

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Knapsack Key-Generation System using javascript on Web

Knapsack Key-Generation System using JavaScript on Web

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6th International Conference on Computer Sciences and Convergence Information Technology (ICCIT)

作者： Hamasho, Shinsuke Murakami, Yasuyuki Osaka Electrocommun Univ Neyagawa Osaka 5728530 Japan

ISBN: (纸本)9788988678558

Although some studies have been conducted in knapsack cryptosystems, it is not necessarily easy to generate keys in public-key cryptosystem. There are few open, scalability and easy to use systems. For web usage, programs written in java script have high transparency and scalability, and are very suitable for cryptosytems. This paper provides the necessary systems to generate keys, encrypt and decrypt in knapsack cryptosytem, which can be applied to most knapsack PKC by simply defining some functions including generating secret keys, translating into public keys and others. This paper also provides two examples, Merkle-Hellman and shifted odd knapsack PKC.

关键词： knapsack public-key cryptosystem key-generation system Merkle-Hellman knapsack cryptosystem Shifted-Odd knapsack cryptosystem java script

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Web4Desktop, a Framework for Improving the Usability of Web Applications

Web4Desktop, a Framework for Improving the Usability of Web ...

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International Conference on ENTERprize Information Systems

作者： Carstoiu, Bogdan Carstoiu, Dorin Univ Politehn Bucuresti Bucharest Romania

ISBN: (纸本)9783642164187

The cloud computing model leads to the increased penetration of the web applications in the office environment. Designed in many cases to replace traditional desktop software, web applications still lack many of the valuable features present on the desktop that increase usability and productivity. Due to the highly isolated design of the browser, it is currently impossible for web applications to communicate with desktop environment, which usually means sending messages or receiving event notifications. This is often required in order to let the person using the application know about the important events happening in the minimized browser window. By contrast traditional applications can take the control of the desktop at any time. The paper introduces the Web4Desktop framework, a browser/client based architecture designed to overcome these limitations by proving a secure infrastructure that allows web applications to communicate with any desktop software implementing the Web4Desktop API. The framework can be utilized to add desktop integration to existing web applications, a step that requires only minimal changes in the web application's code and greatly improve the user experience because these applications will start to behave more like desktop software.

关键词： Cloud computing java script web security web usability browser plug-in business and office software web applications

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An Extensible Approach for Taming the Challenges of javascript Dead Code Elimination 25

An Extensible Approach for Taming the Challenges of JavaScri...

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25th IEEE International Conference on Software Analysis, Evolution and Reengineering (SANER)

作者： Obbink, Niels Groot Malavolta, Ivano Scoccia, Gian Luca Lago, Patricia Vrije Univ Amsterdam Amsterdam Netherlands Gran Sasso Sci Inst Laquila Italy

ISBN: (数字)9781538649695

ISBN: (纸本)9781538649695

javascript is becoming the de-facto programming language of the Web. Large-scale web applications (web apps) written in javascript are commonplace nowadays, with big technology players (e.g., Google, Facebook) using it in their core flagship products. Today, it is common practice to reuse existing javascript code, usually in the form of third-party libraries and frameworks. If on one side this practice helps in speeding up development time, on the other side it comes with the risk of bringing dead code, i.e., javascript code which is never executed, but still downloaded from the network and parsed in the browser. This overhead can negatively impact the overall performance and energy consumption of the web app. In this paper we present Lacuna, an approach for javascript dead code elimination, where existing javascript analysis techniques are applied in combination. The proposed approach supports both static and dynamic analyses, it is extensible, and independent of the specificities of the used javascript analysis techniques. Lacuna can be applied to any javascript code base, without imposing any constraints to the developer, e.g., on her coding style or on the use of some specific javascript feature (e.g., modules). Lacuna has been evaluated on a suite of 29 publicly-available web apps, composed of 15,946 javascript functions, and built with different javascript frameworks (e.g., Angular, ***, jQuery). Despite being a prototype, Lacuna obtained promising results in terms of analysis execution time and precision.

关键词： Method of moments Libraries Encoding Tools Browsers Energy consumption Uncertainty Browsers METHOD OF MOMENTS energy consumption Libraries EXPANDABLE taming Uncertainty java script coding

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Improving javascript Performance by Deconstructing the Type System 14

Improving JavaScript Performance by Deconstructing the Type ...

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35th ACM SIGPLAN Conference on Programming Language Design and Implementation (PLDI)

作者： Ahn, Wonsun Choi, Jiho Shull, Thomas Garzaran, Maria J. Torrellas, Josep Univ Illinois Champaign IL 61820 USA

ISBN: (纸本)9781450327848

Increased focus on java script performance has resulted in vast performance improvements for many benchmarks. However, for actual code used in websites, the attained improvements often lag far behind those for popular benchmarks. This paper shows that the main reason behind this shortfall is how the compiler understands types. java script has no concept of types, but the compiler assigns types to objects anyway for ease of code generation. We examine the way that the Chrome V8 compiler defines types, and identify two design decisions that are the main reasons for the lack of improvement: (1) the inherited prototype object is part of the current object's type definition, and (2) method bindings are also part of the type definition. These requirements make types very unpredictable, which hinders type specialization by the compiler. Hence, we modify V8 to remove these requirements, and use it to compile the java script code assembled by JSBench from real websites. On average, we reduce the execution time of JSBench by 36%, and the dynamic instruction count by 49%.

关键词： Design Languages Performance java script scripting Language Dynamic Typing Type Specialization Hidden Class Inline Caching Prototype

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Utilization of the PLC as a Web Server for Remote Monitoring of the Technological Process

Utilization of the PLC as a Web Server for Remote Monitoring...

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14th International Carpathian Control Conference (ICCC)

作者： Kacur, Jan Durdan, Milan Laciak, Marek Tech Univ Kosice Fac BERG Inst Control & Informatizat Prod Proc Kosice Slovakia

ISBN: (纸本)9781467344906;9781467344883

This paper presents how it is possible to utilize PLC in the task of the Web server. Described is configuration of the PLC and its connection to the computer network. Next is described principle of creation dynamic web page and described are function for process variable data read and write. User can create dynamic web page that uses combination of some programming language e. g. HTML, ASP (Active Server Pages) and java script. The process variables can be displayed on remote PC independently on operating system. There is only web browser needed. In the paper is also described principle of the desktop application that was programmed in the java language. This application directly communicates with remote PLC and has own visualization of the technological process. For communication with the PLC the opened and wide HTTP web protocol is used. Described principles present some alternative for well-known technology OPC. Inscribed principles were verified in application for temperatures measurement in the underground gasification process and for system of indirect temperature measurement.

关键词： PLC remote monitoring HTML ASP java java script process visualization

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javascript: Designing a Language in 10 Days

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COMPUTER 2012年第2期45卷 7-8页

作者： Severance, Charles Univ Michigan Sch Informat Ann Arbor MI 48109 USA

The evolution and use of javascript, a language developed in 10 days back in 1995, is really just getting started.

关键词： java script HTML Brendan Eich

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Detecting Function Purity in javascript 15

Detecting Function Purity in JavaScript

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15th IEEE International Working Conference on Source Code Analysis and Manipulation (SCAM)

作者： Nicolay, Jens Noguera, Carlos De Roover, Coen De Meuter, Wolfgang Vrije Univ Brussel Software Languages Lab Brussels Belgium

ISBN: (纸本)9781467375290

We present an approach to detect function purity in javascript. A function is pure if none of its applications cause observable side-effects. The approach is based on a pushdown flow analysis that besides traditional control and value flow also keeps track of write effects. To increase the precision of our purity analysis, we combine it with an intraprocedural analysis to determine freshness of variables and object references. We formalize the core aspects of our analysis, and discuss our implementation used to analyze several common javascript benchmarks. Experiments show that our technique is capable of detecting function purity, even in the presence of higher-order functions, dynamic property expressions, and prototypal inheritance.

关键词： java program diagnostics javascript function purity detection pushdown flow analysis Arrays Benchmark testing Context Reactive power Resource management Semantics Standards analysis programme Benchmark testing Reactive power management of resources Semantics java script java java programming language purity arrays semiotics Flow Analysis

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1st International Workshop on Live Programming (LIVE 2013)

1st International Workshop on Live Programming (LIVE 2013)

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35th International Conference on Software Engineering (ICSE)

作者： Burg, Brian Kuhn, Adrian Parnin, Chris Univ Washington Seattle WA 98195 USA Georgia Tech Atlanta GA USA

ISBN: (纸本)9781467330763

Live programming is an idea espoused by programming environments from the earliest days of computing (such as Lisp machines and SmallTalk) but have since lain dormant. Recently, the prevalence of asynchronous feedback in programming languages such as javascript and advances in visualizations and user interfaces have lead to a resurgence of live programming in online education communities (such as Khan Academy) and in experimental IDEs (such as LightTable). The LIVE 2013 workshop includes 11 papers describing visions, implementations, mashups, and new directions of live programming environments. The participants include both practitioners of live coding and researchers in programming languages and software engineering. Finally, several demos curated on the live workshop page are presented.

关键词： Computer Programming Languages workshops Workshops programming environments Sight Visualization User Interface Device Component resurgence java script Smalltalk LISP PLUG-IN

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