Page

Obtain the total number of pages

Obtain the total number of pages of the PDF document.

• Syntax

  Expression.ActivePDF.PagesCount

  Expression: the document type application object.

• Return value

  Returns a number that represents the total number of pages.

• Example

  async function example() {
    await instance.ready();
  
    const app = instance.Application;
    
    // Obtain the total number of pages.
    const totalPages = await app.ActivePDF.PagesCount;
    console.log(totalPages);
  }

Obtain the current page number

Obtain the current page number of the PDF document.

• Syntax

  Expression.ActivePDF.CurrentPage

  Expression: the document type application object.

• Return value

  Returns a number that represents the current page number.

• Example

  async function example() {
    await instance.ready();
  
    const app = instance.Application;
    
    // Obtain the current page number.
    const curryPage = await app.ActivePDF.CurrentPage;
    console.log(curryPage);
  }

Listen to page change events

Listen to the page change events of the current page.

• Syntax

  Expression.Sub.CurrentPageChange = eventHandle

  Expression: the document type application object.

• Example

  async function example() {
    await instance.ready();
  
    const app = instance.Application;
    
    // Listen to the page change events of the current page.
    app.Sub.CurrentPageChange  = async (curryPage) => {
      console.log ('Switch to:', curryPage);
    };
  }

Jump to a specified page

Jump to a specified page in the PDF document.

• Syntax

  Expression.ActivePDF.JumpToPage(PageNum)

  Expression: the document type application object.

• Parameters

  Parameter	Type	Required	Description
  PageNum	Number	Yes	The page number to jump to.

• Example

  async function example() {
    await instance.ready();
  
    const app = instance.Application;
    
    // Jump to the specified page.
    await app.ActivePDF.JumpToPage(3);
  }