<!-- Do not edit this file. It is automatically generated by API Documenter. --> [Home](./index.md) > [puppeteer](./puppeteer.md) > [Page](./puppeteer.page.md) > [queryObjects](./puppeteer.page.queryobjects.md) ## Page.queryObjects() method This method iterates the JavaScript heap and finds all objects with the given prototype. <b>Signature:</b> ```typescript queryObjects(prototypeHandle: JSHandle): Promise<JSHandle>; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | prototypeHandle | [JSHandle](./puppeteer.jshandle.md) | a handle to the object prototype. | <b>Returns:</b> Promise<[JSHandle](./puppeteer.jshandle.md)<!-- -->> ## Remarks ## Example ```js // Create a Map object await page.evaluate(() => window.map = new Map()); // Get a handle to the Map object prototype const mapPrototype = await page.evaluateHandle(() => Map.prototype); // Query all map instances into an array const mapInstances = await page.queryObjects(mapPrototype); // Count amount of map objects in heap const count = await page.evaluate(maps => maps.length, mapInstances); await mapInstances.dispose(); await mapPrototype.dispose(); ```