Class EquationSymbol

  • An EquationSymbol represents a symbol within a mathematical equation in a Google Doc and cannot contain any other element.

  • You can use Apps Script to manipulate EquationSymbol elements, such as copying, retrieving attributes, getting the symbol code, and merging with other elements.

  • Several methods are available for navigating the document structure, like getting the next or previous sibling, parent element, or determining the element type.

  • Authorization with specific scopes is required to use the methods provided by EquationSymbol.

EquationSymbol

An element representing a symbol in a mathematical Equation . An EquationSymbol cannot contain any other element. For more information on document structure, see the guide to extending Google Docs.

Methods

MethodReturn typeBrief description
copy() EquationSymbol Returns a detached, deep copy of the current element.
getAttributes() ObjectRetrieves the element's attributes.
getCode() StringRetrieves the code corresponding to the equation symbol.
getNextSibling() Element Retrieves the element's next sibling element.
getParent() ContainerElement Retrieves the element's parent element.
getPreviousSibling() Element Retrieves the element's previous sibling element.
getType() ElementType Retrieves the element's ElementType .
isAtDocumentEnd() BooleanDetermines whether the element is at the end of the Document .
merge() EquationSymbol Merges the element with the preceding sibling of the same type.
removeFromParent() EquationSymbol Removes the element from its parent.
setAttributes(attributes) EquationSymbol Sets the element's attributes.

Detailed documentation

copy()

Returns a detached, deep copy of the current element.

Any child elements present in the element are also copied. The new element doesn't have a parent.

Return

EquationSymbol — The new copy.

Authorization

Scripts that use this method require authorization with one or more of the following scopes:

  • https://www.googleapis.com/auth/documents.currentonly
  • https://www.googleapis.com/auth/documents

getAttributes()

Retrieves the element's attributes.

The result is an object containing a property for each valid element attribute where each property name corresponds to an item in the DocumentApp.Attribute enumeration.

constdoc=DocumentApp.getActiveDocument();
constdocumentTab=doc.getActiveTab().asDocumentTab();
constbody=documentTab.getBody();
// Append a styled paragraph.
constpar=body.appendParagraph('A bold, italicized paragraph.');
par.setBold(true);
par.setItalic(true);
// Retrieve the paragraph's attributes.
constatts=par.getAttributes();
// Log the paragraph attributes.
for(constattinatts){
Logger.log(`${att}:${atts[att]}`);
}

Return

Object — The element's attributes.

Authorization

Scripts that use this method require authorization with one or more of the following scopes:

  • https://www.googleapis.com/auth/documents.currentonly
  • https://www.googleapis.com/auth/documents

getCode()

Retrieves the code corresponding to the equation symbol.

Return

String — the symbol code

Authorization

Scripts that use this method require authorization with one or more of the following scopes:

  • https://www.googleapis.com/auth/documents.currentonly
  • https://www.googleapis.com/auth/documents

getNextSibling()

Retrieves the element's next sibling element.

The next sibling has the same parent and follows the current element.

Return

Element — The next sibling element.

Authorization

Scripts that use this method require authorization with one or more of the following scopes:

  • https://www.googleapis.com/auth/documents.currentonly
  • https://www.googleapis.com/auth/documents

getParent()

Retrieves the element's parent element.

The parent element contains the current element.

Return

ContainerElement — The parent element.

Authorization

Scripts that use this method require authorization with one or more of the following scopes:

  • https://www.googleapis.com/auth/documents.currentonly
  • https://www.googleapis.com/auth/documents

getPreviousSibling()

Retrieves the element's previous sibling element.

The previous sibling has the same parent and precedes the current element.

Return

Element — The previous sibling element.

Authorization

Scripts that use this method require authorization with one or more of the following scopes:

  • https://www.googleapis.com/auth/documents.currentonly
  • https://www.googleapis.com/auth/documents

getType()

Retrieves the element's ElementType .

Use getType() to determine the exact type of a given element.

constdoc=DocumentApp.getActiveDocument();
constdocumentTab=doc.getActiveTab().asDocumentTab();
constbody=documentTab.getBody();
// Obtain the first element in the active tab's body.
constfirstChild=body.getChild(0);
// Use getType() to determine the element's type.
if(firstChild.getType()===DocumentApp.ElementType.PARAGRAPH){
Logger.log('The first element is a paragraph.');
}else{
Logger.log('The first element is not a paragraph.');
}

Return

ElementType — The element type.

Authorization

Scripts that use this method require authorization with one or more of the following scopes:

  • https://www.googleapis.com/auth/documents.currentonly
  • https://www.googleapis.com/auth/documents

isAtDocumentEnd()

Determines whether the element is at the end of the Document .

Return

Boolean — Whether the element is at the end of the tab.

Authorization

Scripts that use this method require authorization with one or more of the following scopes:

  • https://www.googleapis.com/auth/documents.currentonly
  • https://www.googleapis.com/auth/documents

merge()

Merges the element with the preceding sibling of the same type.

Only elements of the same ElementType can be merged. Any child elements contained in the current element are moved to the preceding sibling element.

The current element is removed from the document.

constdoc=DocumentApp.getActiveDocument();
constdocumentTab=doc.getActiveTab().asDocumentTab();
constbody=documentTab.getBody();
// Example 1: Merge paragraphs
// Append two paragraphs to the document's active tab.
constpar1=body.appendParagraph('Paragraph 1.');
constpar2=body.appendParagraph('Paragraph 2.');
// Merge the newly added paragraphs into a single paragraph.
par2.merge();
// Example 2: Merge table cells
// Create a two-dimensional array containing the table's cell contents.
constcells=[
['Row 1, Cell 1','Row 1, Cell 2'],
['Row 2, Cell 1','Row 2, Cell 2'],
];
// Build a table from the array.
consttable=body.appendTable(cells);
// Get the first row in the table.
constrow=table.getRow(0);
// Get the two cells in this row.
constcell1=row.getCell(0);
constcell2=row.getCell(1);
// Merge the current cell into its preceding sibling element.
constmerged=cell2.merge();

Return

EquationSymbol — The merged element.

Authorization

Scripts that use this method require authorization with one or more of the following scopes:

  • https://www.googleapis.com/auth/documents.currentonly
  • https://www.googleapis.com/auth/documents

removeFromParent()

Removes the element from its parent.

constdoc=DocumentApp.getActiveDocument();
constdocumentTab=doc.getActiveTab().asDocumentTab();
constbody=documentTab.getBody();
// Remove all images in the active tab's body.
constimgs=body.getImages();
for(leti=0;i < imgs.length;i++){
imgs[i].removeFromParent();
}

Return

EquationSymbol — The removed element.

Authorization

Scripts that use this method require authorization with one or more of the following scopes:

  • https://www.googleapis.com/auth/documents.currentonly
  • https://www.googleapis.com/auth/documents

setAttributes(attributes)

Sets the element's attributes.

The specified attributes parameter must be an object where each property name is an item in the DocumentApp.Attribute enumeration and each property value is the new value to be applied.

constdoc=DocumentApp.getActiveDocument();
constdocumentTab=doc.getActiveTab().asDocumentTab();
constbody=documentTab.getBody();
// Define a custom paragraph style.
conststyle={};
style[DocumentApp.Attribute.HORIZONTAL_ALIGNMENT]=
DocumentApp.HorizontalAlignment.RIGHT;
style[DocumentApp.Attribute.FONT_FAMILY]='Calibri';
style[DocumentApp.Attribute.FONT_SIZE]=18;
style[DocumentApp.Attribute.BOLD]=true;
// Append a plain paragraph.
constpar=body.appendParagraph('A paragraph with custom style.');
// Apply the custom style.
par.setAttributes(style);

Parameters

NameTypeDescription
attributesObjectThe element's attributes.

Return

EquationSymbol — The current element.

Authorization

Scripts that use this method require authorization with one or more of the following scopes:

  • https://www.googleapis.com/auth/documents.currentonly
  • https://www.googleapis.com/auth/documents

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Last updated 2024年12月02日 UTC.