WebApp performance monitoring by performance.mark with metadataazu Posted on Nov 20, 2017 • Originally published at Medium on Nov 19, 2017 I’ve created performance-mark-metadata. This library provide performance.mark with custom meta data. This library inspired by User Timing API Level 3 proposal. This proposal will add details as metadata to performance.mark. Currently, Performance.mark() API can not add metadata to marking. Supports Old browser need to Perf
