{"json_modified": "2016-03-28T08:09:22.387117", "uuid": "4df6dc01-4b8f-4bd1-bab4-742b54af110d", "title": "PerfMeasurement.jsm", "url": "/en-US/docs/Mozilla/JavaScript_code_modules/PerfMeasurement.jsm", "tags": ["Tools", "Modules", "Performance"], "translations": [], "modified": "2014-03-25T18:24:53", "label": "PerfMeasurement.jsm", "localization_tags": [], "locale": "en-US", "id": 9550, "last_edit": "2012-12-16T05:47:14", "summary": "<code>The PerfMeasurement.jsm</code> JavaScript code module lets you take detailed performance measurements of your code.", "sections": [{"id": "Method_overview", "title": "Method overview"}, {"id": "Member_fields", "title": "Member fields"}, {"id": "Recorded_data_variables", "title": "Recorded data variables"}, {"id": "Event_types_measured_constant", "title": "Event types measured constant"}, {"id": "Constants", "title": "Constants"}, {"id": "Event_mask_constants", "title": "Event mask constants"}, {"id": "Number_of_available_event_types", "title": "Number of available event types"}, {"id": "Constructor", "title": "Constructor"}, {"id": "Parameters", "title": "Parameters"}, {"id": "Return_value", "title": "Return value"}, {"id": "Methods", "title": "Methods"}, {"id": "canMeasureSomething()", "title": "canMeasureSomething()"}, {"id": "Parameters_2", "title": "Parameters"}, {"id": "Return_value_2", "title": "Return value"}, {"id": "reset()", "title": "reset()"}, {"id": "Parameters_3", "title": "Parameters"}, {"id": "start()", "title": "start()"}, {"id": "Parameters_4", "title": "Parameters"}, {"id": "stop()", "title": "stop()"}, {"id": "Parameters_5", "title": "Parameters"}, {"id": "See_also", "title": "See also"}], "slug": "Mozilla/JavaScript_code_modules/PerfMeasurement.jsm", "review_tags": []}