Word.CustomPropertyCollection class

Contains the collection of Word.CustomProperty objects.

Extends

Remarks

[ API set: WordApi 1.3 ]

Examples

// Link to full sample: https://raw.githubusercontent.com/OfficeDev/office-js-snippets/prod/samples/word/30-properties/read-write-custom-document-properties.yaml

await Word.run(async (context) => {
    const properties: Word.CustomPropertyCollection = context.document.properties.customProperties;
    properties.load("key,type,value");

    await context.sync();
    for (let i = 0; i < properties.items.length; i++)
        console.log("Property Name:" + properties.items[i].key + "; Type=" + properties.items[i].type + "; Property Value=" + properties.items[i].value);
});

Properties

context

The request context associated with the object. This connects the add-in's process to the Office host application's process.

items

Gets the loaded child items in this collection.

Methods

add(key, value)

Creates a new or sets an existing custom property.

deleteAll()

Deletes all custom properties in this collection.

getCount()

Gets the count of custom properties.

getItem(key)

Gets a custom property object by its key, which is case-insensitive. Throws an ItemNotFound error if the custom property doesn't exist.

getItemOrNullObject(key)

Gets a custom property object by its key, which is case-insensitive. If the custom property doesn't exist, then this method will return an object with its isNullObject property set to true. For further information, see *OrNullObject methods and properties.

load(options)

Queues up a command to load the specified properties of the object. You must call context.sync() before reading the properties.

load(propertyNames)

Queues up a command to load the specified properties of the object. You must call context.sync() before reading the properties.

load(propertyNamesAndPaths)

Queues up a command to load the specified properties of the object. You must call context.sync() before reading the properties.

toJSON()

Overrides the JavaScript toJSON() method in order to provide more useful output when an API object is passed to JSON.stringify(). (JSON.stringify, in turn, calls the toJSON method of the object that's passed to it.) Whereas the original Word.CustomPropertyCollection object is an API object, the toJSON method returns a plain JavaScript object (typed as Word.Interfaces.CustomPropertyCollectionData) that contains an "items" array with shallow copies of any loaded properties from the collection's items.

track()

Track the object for automatic adjustment based on surrounding changes in the document. This call is a shorthand for context.trackedObjects.add(thisObject). If you're using this object across .sync calls and outside the sequential execution of a ".run" batch, and get an "InvalidObjectPath" error when setting a property or invoking a method on the object, you need to add the object to the tracked object collection when the object was first created. If this object is part of a collection, you should also track the parent collection.

untrack()

Release the memory associated with this object, if it has previously been tracked. This call is shorthand for context.trackedObjects.remove(thisObject). Having many tracked objects slows down the host application, so please remember to free any objects you add, once you're done using them. You'll need to call context.sync() before the memory release takes effect.

Property Details

context

The request context associated with the object. This connects the add-in's process to the Office host application's process.

context: RequestContext;

Property Value

items

Gets the loaded child items in this collection.

readonly items: Word.CustomProperty[];

Property Value

Examples

// Link to full sample: https://raw.githubusercontent.com/OfficeDev/office-js-snippets/prod/samples/word/30-properties/read-write-custom-document-properties.yaml

await Word.run(async (context) => {
    const properties: Word.CustomPropertyCollection = context.document.properties.customProperties;
    properties.load("key,type,value");

    await context.sync();
    for (let i = 0; i < properties.items.length; i++)
        console.log("Property Name:" + properties.items[i].key + "; Type=" + properties.items[i].type + "; Property Value=" + properties.items[i].value);
});

Method Details

add(key, value)

Creates a new or sets an existing custom property.

add(key: string, value: any): Word.CustomProperty;

Parameters

key

string

Required. The custom property's key, which is case-insensitive.

value

any

Required. The custom property's value.

Returns

Remarks

[ API set: WordApi 1.3 ]

Examples

// Link to full sample: https://raw.githubusercontent.com/OfficeDev/office-js-snippets/prod/samples/word/30-properties/read-write-custom-document-properties.yaml

await Word.run(async (context) => {
    context.document.properties.customProperties.add("Numeric Property", 1234);

    await context.sync();
    console.log("Property added");
});

...

await Word.run(async (context) => {
    context.document.properties.customProperties.add("String Property", "Hello World!");

    await context.sync();
    console.log("Property added");
});

deleteAll()

Deletes all custom properties in this collection.

deleteAll(): void;

Returns

void

Remarks

[ API set: WordApi 1.3 ]

getCount()

Gets the count of custom properties.

getCount(): OfficeExtension.ClientResult<number>;

Returns

Remarks

[ API set: WordApi 1.3 ]

getItem(key)

Gets a custom property object by its key, which is case-insensitive. Throws an ItemNotFound error if the custom property doesn't exist.

getItem(key: string): Word.CustomProperty;

Parameters

key

string

The key that identifies the custom property object.

Returns

Remarks

[ API set: WordApi 1.3 ]

getItemOrNullObject(key)

Gets a custom property object by its key, which is case-insensitive. If the custom property doesn't exist, then this method will return an object with its isNullObject property set to true. For further information, see *OrNullObject methods and properties.

getItemOrNullObject(key: string): Word.CustomProperty;

Parameters

key

string

Required. The key that identifies the custom property object.

Returns

Remarks

[ API set: WordApi 1.3 ]

load(options)

Queues up a command to load the specified properties of the object. You must call context.sync() before reading the properties.

load(options?: Word.Interfaces.CustomPropertyCollectionLoadOptions & Word.Interfaces.CollectionLoadOptions): Word.CustomPropertyCollection;

Parameters

options

Word.Interfaces.CustomPropertyCollectionLoadOptions & Word.Interfaces.CollectionLoadOptions

Provides options for which properties of the object to load.

Returns

load(propertyNames)

Queues up a command to load the specified properties of the object. You must call context.sync() before reading the properties.

load(propertyNames?: string | string[]): Word.CustomPropertyCollection;

Parameters

propertyNames

string | string[]

A comma-delimited string or an array of strings that specify the properties to load.

Returns

load(propertyNamesAndPaths)

Queues up a command to load the specified properties of the object. You must call context.sync() before reading the properties.

load(propertyNamesAndPaths?: OfficeExtension.LoadOption): Word.CustomPropertyCollection;

Parameters

propertyNamesAndPaths
OfficeExtension.LoadOption

propertyNamesAndPaths.select is a comma-delimited string that specifies the properties to load, and propertyNamesAndPaths.expand is a comma-delimited string that specifies the navigation properties to load.

Returns

toJSON()

Overrides the JavaScript toJSON() method in order to provide more useful output when an API object is passed to JSON.stringify(). (JSON.stringify, in turn, calls the toJSON method of the object that's passed to it.) Whereas the original Word.CustomPropertyCollection object is an API object, the toJSON method returns a plain JavaScript object (typed as Word.Interfaces.CustomPropertyCollectionData) that contains an "items" array with shallow copies of any loaded properties from the collection's items.

toJSON(): Word.Interfaces.CustomPropertyCollectionData;

Returns

track()

Track the object for automatic adjustment based on surrounding changes in the document. This call is a shorthand for context.trackedObjects.add(thisObject). If you're using this object across .sync calls and outside the sequential execution of a ".run" batch, and get an "InvalidObjectPath" error when setting a property or invoking a method on the object, you need to add the object to the tracked object collection when the object was first created. If this object is part of a collection, you should also track the parent collection.

track(): Word.CustomPropertyCollection;

Returns

untrack()

Release the memory associated with this object, if it has previously been tracked. This call is shorthand for context.trackedObjects.remove(thisObject). Having many tracked objects slows down the host application, so please remember to free any objects you add, once you're done using them. You'll need to call context.sync() before the memory release takes effect.

untrack(): Word.CustomPropertyCollection;

Returns