参考资料
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根据您的偏好保存内容并对其进行分类。
Embedded Viewer API 包含一个类：DefaultViewer。如需简要了解如何使用该 API，请参阅开发者指南。
构造函数摘要
google.books.DefaultViewer(div, opt_options)
- Google 图书搜索中的图书的嵌入式查看器。
方法摘要
string
getPageNumber()
- 返回当前在视口中显示的页面的页码。
string
getPageId()
- 返回视口中当前可见的网页的唯一标识符。
boolean
goToPage(pageNumber)
- 如果页面存在且已开启，则返回 true。
boolean
goToPageId(pageId)
- 如果相应页面已存在且被转到，则返回 true。
boolean
isLoaded()
- 表示是否已使用给定图书成功初始化了观看器。
highlight(opt_string)
- 突出显示视口中的字词。
load(identifiers, opt_notFoundCallback, opt_successCallback)
- 在视口中加载图书。
nextPage()
- 前往图书中的下一页。
previousPage()
- 前往图书中的上一页。
resize()
- 调整观看器的大小，使其符合容器 div 的大小。
zoomIn()
- 放大查看器。
zoomOut()
- 缩小查看器。
构造函数详细信息
google.books.DefaultViewer
google.books.DefaultViewer(div, opt_options)
参数：
Element div - 用于绘制视口的 div。
Object opt_options - 要传递给观看者的选项的键值对映射。
方法详情
getPageNumber
string getPageNumber()
getPageId
string getPageId()
goToPage
boolean goToPage(pageNumber)
参数：
string, number pageNumber - 要跳转到的页面的页码。
goToPageId
boolean goToPageId(pageId)
如果相应页面已存在且被用户打开过，则返回 true。
参数：
string pageId - 要转到的网页的唯一标识符。
isLoaded
boolean isLoaded()
如果使用 load 已成功使用给定图书初始化观看器，则返回 true。
精彩集锦
highlight(opt_string)
参数：
string opt_string - 要突出显示的字符串。如果为 null 或 undefined，则关闭突出显示。
负荷
load(identifiers, opt_notFoundCallback, opt_successCallback)
参数：
string, Array of strings identifiers - 试阅网址或图书标识符，例如 ISBN、OCLC 等。请参阅 Dynamic Links 请求格式。如需为图书指定多个备用标识符（例如精装和平装 ISBN），请传递这些标识符字符串的 Array；观看器将加载数组中第一个可嵌入的图书。
Function opt_notFoundCallback - 如果 identifier 是图书标识符，则当未找到图书时，将调用此回调。如果传递了 null 或省略此参数，则在失败时不会调用任何函数。
Function opt_successCallback - 如果使用特定图书成功实例化了观看器，并且准备好接收 nextPage 等函数调用，系统将执行此回调。
nextPage
nextPage()
previousPage
previousPage()
resize
resize()
调整观看器的大小，使其与容器 div 的大小一致。
zoomIn
zoomIn()
zoomOut
zoomOut()
返回页首
如未另行说明，那么本页面中的内容已根据知识共享署名 4.0 许可获得了许可，并且代码示例已根据 Apache 2.0 许可获得了许可。有关详情，请参阅 Google 开发者网站政策。Java 是 Oracle 和/或其关联公司的注册商标。
最后更新时间 (UTC)：2024-11-08。
[null,null,["最后更新时间 (UTC)：2024-11-08。"],[[["\u003cp\u003eThe Embedded Viewer API allows you to embed a Google Book into your webpage using the \u003ccode\u003egoogle.books.DefaultViewer\u003c/code\u003e class.\u003c/p\u003e\n"],["\u003cp\u003eIt provides methods for navigation such as \u003ccode\u003enextPage\u003c/code\u003e, \u003ccode\u003epreviousPage\u003c/code\u003e, \u003ccode\u003egoToPage\u003c/code\u003e, and \u003ccode\u003egoToPageId\u003c/code\u003e, as well as zooming and highlighting functionalities.\u003c/p\u003e\n"],["\u003cp\u003eYou can load a book using identifiers like ISBN or OCLC with the \u003ccode\u003eload\u003c/code\u003e method and handle loading success or failure with callbacks.\u003c/p\u003e\n"],["\u003cp\u003eThe viewer can be resized dynamically with \u003ccode\u003eresize\u003c/code\u003e and provides methods to retrieve current page information like \u003ccode\u003egetPageNumber\u003c/code\u003e and \u003ccode\u003egetPageId\u003c/code\u003e.\u003c/p\u003e\n"]]],[],null,["# Reference\n\nThe Embedded Viewer API contains one class: DefaultViewer. For an introduction to using the API, see the [Developer's Guide](/books/docs/viewer/developers_guide).\n\nConstructor summary\n-------------------\n\n`\n`**[google.books.DefaultViewer](#google.books.DefaultViewer)**`(div, opt_options)\n`\n: An embedded viewer for a volume in Google Book Search.\n\nMethod summary\n--------------\n\n`string\n`**[getPageNumber](#google.books.DefaultViewer.getPageNumber)**`() `\n: Returns the page number of the page that's currently visible in\n the viewport.\n\n`string\n`**[getPageId](#google.books.DefaultViewer.getPageId)**`() `\n: Returns a unique identifier for the page that's currently visible in the\n viewport.\n\n`boolean\n`**[goToPage](#google.books.DefaultViewer.goToPage)**`(pageNumber) `\n: Returns true if the page exists and was turned to.\n\n`boolean\n`**[goToPageId](#google.books.DefaultViewer.goToPageId)**`(pageId) `\n: Returns true if the page exists and was turned to.\n\n`boolean\n`**[isLoaded](#google.books.DefaultViewer.isLoaded)()**\n: Indicates whether the viewer has been successfully initialized with the given book.\n\n`\n`**[highlight](#google.books.DefaultViewer.highlight)**`(opt_string) `\n: Highlights a term in the viewport.\n\n`\n`**[load](#google.books.DefaultViewer.load)**`(identifiers, opt_notFoundCallback, opt_successCallback) `\n: Loads a book in the viewport.\n\n`\n`**[nextPage](#google.books.DefaultViewer.nextPage)**`() `\n: Goes to the next page in the book.\n\n`\n`**[previousPage](#google.books.DefaultViewer.previousPage)**`() `\n: Goes to the previous page in the book.\n\n`\n`**[resize](#google.books.DefaultViewer.resize)**`() `\n: Resizes the viewer to conform to size of its container div.\n\n`\n`**[zoomIn](#google.books.DefaultViewer.zoomIn)**`() `\n: Zooms into the viewer.\n\n`\n`**[zoomOut](#google.books.DefaultViewer.zoomOut)**`() `\n: Zooms out of the viewer.\n\nConstructor detail\n------------------\n\n### google.books.DefaultViewer\n\n```\ngoogle.books.DefaultViewer(div, opt_options)\n```\n\nAn embedded viewer for a volume in Google Book Search.\n\n\u003c!-- --\u003e\n\n**Parameters:** *Element*` div` - Div to draw the viewport in.\n\u003c!-- --\u003e\n\n*Object*` opt_options` - Key-value map of options to pass along to the viewer.\n\nMethod detail\n-------------\n\n### getPageNumber\n\n```\nstring getPageNumber()\n```\n\nReturns the page number of the page that's currently visible in the viewport.\n\n\u003c!-- --\u003e\n\n**Returns:** *string*` `\n\n### getPageId\n\n```\nstring getPageId()\n```\n\nReturns a unique identifier for the page that's currently visible in the viewport.\n\n\u003c!-- --\u003e\n\n**Returns:** *string*` `\n\n### goToPage\n\n```\nboolean goToPage(pageNumber)\n```\n\nReturns true if the page exists and was turned to.\n\n\u003c!-- --\u003e\n\n**Parameters:** *string, number*` pageNumber ` - The page number of the page to turn to.\n\n\u003c!-- --\u003e\n\n**Returns:** *boolean*` `\n\n### goToPageId\n\n```\nboolean goToPageId(pageId)\n```\n\nReturns true if the page exists and was turned to.\n\n\u003c!-- --\u003e\n\n**Parameters:** *string*` pageId ` - The unique identifier of the page to turn to.\n\n\u003c!-- --\u003e\n\n**Returns:** *boolean*` `\n\n### isLoaded\n\n```\nboolean isLoaded()\n```\n\nReturns true if the viewer has been successfully initialized with the given book using `load`.\n\n\u003c!-- --\u003e\n\n**Returns:** *boolean*` `\n\n### highlight\n\n```\nhighlight(opt_string)\n```\n\nHighlights a term in the viewport.\n\n\u003c!-- --\u003e\n\n**Parameters:** *string*` opt_string ` - A string to highlight. Turns off highlighting if `null` or `undefined`.\n\n### load\n\n```\nload(identifiers, opt_notFoundCallback, opt_successCallback)\n```\n\nLoads a book in the viewport.\n\n\u003c!-- --\u003e\n\n**Parameters:** *string* `, `*Array of strings*` identifiers ` - A preview URL or book identifier such as an ISBN, OCLC, etc. See [Dynamic Links request format](/books/docs/dynamic-links#requestFormat). To specify several alternative identifiers for the book (e.g., the hardcover and softcover ISBNs), pass an `Array` of these identifier strings; the viewer will the viewer will load the first embeddable book in the array.\n\u003c!-- --\u003e\n\n*Function*` opt_notFoundCallback ` - If `identifier` is a book identifier, this callback will be called if the book was not found. If `null` passed or this parameter is omitted, no function will be called on failure.\n\u003c!-- --\u003e\n\n*Function*` opt_successCallback ` - This callback will be executed if and when the viewer is successfully instantiated with a particular book, and ready to receive function calls such as `nextPage`.\n\n### nextPage\n\n```\nnextPage()\n```\n\nGoes to the next page in the book.\n\n### previousPage\n\n```\npreviousPage()\n```\n\nGoes to the previous page in the book.\n\n### resize\n\n```\nresize()\n```\n\nResizes the viewer to conform to size of its container div.\n\n### zoomIn\n\n```\nzoomIn()\n```\n\nZooms into the viewer.\n\n### zoomOut\n\n```\nzoomOut()\n```\n\nZooms out of the viewer.\n\n[Back to top](#top)"]]
