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JS完毕轻巧的教室享元格局实例_javascript本事_脚本之家

2020年3月1日 - 新闻中心

JS完毕轻巧的教室享元格局实例_javascript本事_脚本之家。正文实例汇报了JS达成轻巧的教室享元情势。分享给大家供大家仿效。具体如下:

享员模式 /* *flyweight 享员模式 */ //例子是一个图书馆存书借书 ->_-> var Book = function(id, title, author, genre, pageCount, publisherId, ISBN, checkoutDate, checkoutMember /*还有一些*/){ this.id = id; this.title = title; this.author = author; this.genre = this.genre; this.pageCount = pageCount; this.publisherId = publisherId; this.ISBN = ISBN; /*...*/ this.checkoutDate = checkoutDate; this.checkoutMember = checkoutMember; }; Book.prototype = { getTitle : function(){ return this.title; }, getAuthor : function(){ return this.author; }, getISBN : function(){ return this.ISBN; }, /*__more.._*/ updateCheckoutStatus : function(booId,checkoutDate,checkoutMember){ this.id = bookId; this.checkoutDate = checkoutDate; this.checkoutMember = checkoutMember; /*_more.._*/ } }; //下面介绍享元的版本;PS(使用了一个OBJ存书籍,这样就可以存多的书) var BookFactory = { var existingBooks = {},existingBook; return { createBook : function(title,author,genre,ISBN){ existingBook = existingBooks[ISBN]; if{ return existingBook; }else{ var book = new Book(/*_moreData_bookInfo == _*/) return existingBooks[ISBN] = book; } } } })(); var BookRecordManager = { var bookRecordDatabase = {}; return { addBookRecord : function{ var book = BookFactory.createBook; bookRecordDatabase[id] = { checkoutDate : checkoutDate, checkoutMember : checkoutMember }; }, updateCheckoutStatus : function{ bookRecordDatabase[bookId] = { xx : tt, oo : yy } }, extend : function(){ /*自定义各种公用方法了*/ } } })();

可望本文所述对大家的javascript程序设计有着扶植。

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