文檔對象模型和動態(tài)html外文翻譯-wenkub
2023-05-19 01:12:52 本頁面
【正文】 as a document When these three aspects are bined,you get the ability to program changes in Web pages in reaction to useror browsergenerated ,you can make HTML pages more dynamic. Popular with Web developers,supported by all major browsers,and standardized,JavaScript provides the ability to program browser actions in response to have true crossplatform DHTML,we still need a uniform way for JavaScript to access and manipulate Web brings us to the DOM. What is DOM? The objective of unit and integration testing was to ensure that the code implemented the design properly。that is,we have verified that the requirements have been met. So far,all the tests have been run by the developers,based on their understanding of the system and its customers also test the system,making sure that it meets their understanding of the requirements,which may be different from the developers’.This test,called an acceptance test,assures the customers that the system they requested is the system that was built for acceptance test is sometimes run in its actual environment but often is run at a test facility different from the target this reason,we may run a final installation test to allow users to exercise system functions and document additional problems that result from being at the actual example,a naval system may be designed,built,and tested at the developer’s site,configured as a ship might be,but not on an actual the development site tests are plete,an additional set of installation tests may be run with the system on board each type of ship that will eventually use the system. Build or lnteration Plan. Ideally,after program testing,you can view the collection of ponents as a single ,during the first steps of system testing,the integrated collection is evaluated from a variety of perspectives,as previously ,large systems are sometimes unwieldy when tested as one enormous collection of fact,such systems are often candidates for phased development,simply because they are much easier to build and test in smaller ,you may choose to perform phased system saw in Chapter 1 that a system can be viewed as a nested set of levels or level is responsible for performing at least the functions of those subsystems it ,we can divide the system into a nested sequence of subsystems and perform the system test on one subsystem at a time. 漢語翻譯： 文檔對象模型和動態(tài) HTML 術(shù)語中的動態(tài) HTML，通常簡寫為 DHTML,通過客戶端腳本引用制作動態(tài)網(wǎng)頁的技術(shù) 來操作文件內(nèi)容和文件描述。因為這些改變通過瀏覽器制作而不需要任何的網(wǎng)絡(luò)和服務(wù)，所以它們是快速而高效的。在過去， DHTML 被瀏覽 器和賣主等特殊群體所信賴。 當(dāng)這三個方面都具備了，你就得到了改變網(wǎng)頁在用 戶或者瀏覽器生成響應(yīng)事件的能力。 什么是 DOM？ 客觀上的單元測試和集成測試是為了確保代碼實施了正確的設(shè)計；換言之，也就是說程序員們寫代碼去實現(xiàn)設(shè)計者們打算要實現(xiàn)的功能。換言之，一個故障可能存在于代碼中，但是如果代碼沒有被執(zhí)行過，或者代碼沒有運行足夠長的時間，或者代碼沒有在能夠引起問題的配置下運行，我們將有可能永遠(yuǎn)看不到軟件的錯誤。盡管我們想要盡可能早的發(fā)現(xiàn)錯誤，系統(tǒng)測試顯示錯誤仍然可能出現(xiàn)在集成測試之后。 同樣種類的交流問題會出現(xiàn)在系統(tǒng)設(shè)計中。 相似的事件可能導(dǎo)致程序設(shè)計的錯誤。由于以上原因，需求和設(shè)計審查是保證系統(tǒng)質(zhì)量的重要因
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